#include <CompressibleFlowSystem.h>

Inheritance diagram for Nektar::CompressibleFlowSystem:

Public Member Functions
virtual	~CompressibleFlowSystem ()
	Destructor for CompressibleFlowSystem class. More...

NekDouble	GetStabilityLimit (int n)
	Function to calculate the stability limit for DG/CG. More...

Array< OneD, NekDouble >	GetStabilityLimitVector (const Array< OneD, int > &ExpOrder)
	Function to calculate the stability limit for DG/CG (a vector of them). More...

Array< OneD, NekDouble >	GetElmtMinHP (void)
	Function to get estimate of min h/p factor per element. More...

virtual void	GetPressure (const Array< OneD, const Array< OneD, NekDouble >> &physfield, Array< OneD, NekDouble > &pressure)

virtual void	GetDensity (const Array< OneD, const Array< OneD, NekDouble >> &physfield, Array< OneD, NekDouble > &density)

virtual bool	HasConstantDensity ()

virtual void	GetVelocity (const Array< OneD, const Array< OneD, NekDouble >> &physfield, Array< OneD, Array< OneD, NekDouble >> &velocity)

Public Member Functions inherited from Nektar::SolverUtils::AdvectionSystem
SOLVER_UTILS_EXPORT	AdvectionSystem (const LibUtilities::SessionReaderSharedPtr &pSession, const SpatialDomains::MeshGraphSharedPtr &pGraph)

virtual SOLVER_UTILS_EXPORT	~AdvectionSystem ()

SOLVER_UTILS_EXPORT AdvectionSharedPtr	GetAdvObject ()
	Returns the advection object held by this instance. More...

SOLVER_UTILS_EXPORT Array< OneD, NekDouble >	GetElmtCFLVals (const bool FlagAcousticCFL=true)

SOLVER_UTILS_EXPORT NekDouble	GetCFLEstimate (int &elmtid)

Public Member Functions inherited from Nektar::SolverUtils::UnsteadySystem
virtual SOLVER_UTILS_EXPORT	~UnsteadySystem ()
	Destructor. More...

SOLVER_UTILS_EXPORT NekDouble	GetTimeStep (const Array< OneD, const Array< OneD, NekDouble >> &inarray)
	Calculate the larger time-step mantaining the problem stable. More...

SOLVER_UTILS_EXPORT void	SteadyStateResidual (int step, Array< OneD, NekDouble > &L2)

Public Member Functions inherited from Nektar::SolverUtils::EquationSystem
virtual SOLVER_UTILS_EXPORT	~EquationSystem ()
	Destructor. More...

SOLVER_UTILS_EXPORT void	SetUpTraceNormals (void)

SOLVER_UTILS_EXPORT void	InitObject ()
	Initialises the members of this object. More...

SOLVER_UTILS_EXPORT void	DoInitialise ()
	Perform any initialisation necessary before solving the problem. More...

SOLVER_UTILS_EXPORT void	DoSolve ()
	Solve the problem. More...

SOLVER_UTILS_EXPORT void	TransCoeffToPhys ()
	Transform from coefficient to physical space. More...

SOLVER_UTILS_EXPORT void	TransPhysToCoeff ()
	Transform from physical to coefficient space. More...

SOLVER_UTILS_EXPORT void	Output ()
	Perform output operations after solve. More...

SOLVER_UTILS_EXPORT NekDouble	LinfError (unsigned int field, const Array< OneD, NekDouble > &exactsoln=NullNekDouble1DArray)
	Linf error computation. More...

SOLVER_UTILS_EXPORT std::string	GetSessionName ()
	Get Session name. More...

template<class T >
std::shared_ptr< T >	as ()

SOLVER_UTILS_EXPORT void	ResetSessionName (std::string newname)
	Reset Session name. More...

SOLVER_UTILS_EXPORT LibUtilities::SessionReaderSharedPtr	GetSession ()
	Get Session name. More...

SOLVER_UTILS_EXPORT MultiRegions::ExpListSharedPtr	GetPressure ()
	Get pressure field if available. More...

SOLVER_UTILS_EXPORT void	ExtraFldOutput (std::vector< Array< OneD, NekDouble > > &fieldcoeffs, std::vector< std::string > &variables)

SOLVER_UTILS_EXPORT void	PrintSummary (std::ostream &out)
	Print a summary of parameters and solver characteristics. More...

SOLVER_UTILS_EXPORT void	SetLambda (NekDouble lambda)
	Set parameter m_lambda. More...

SOLVER_UTILS_EXPORT SessionFunctionSharedPtr	GetFunction (std::string name, const MultiRegions::ExpListSharedPtr &field=MultiRegions::NullExpListSharedPtr, bool cache=false)
	Get a SessionFunction by name. More...

SOLVER_UTILS_EXPORT void	SetInitialConditions (NekDouble initialtime=0.0, bool dumpInitialConditions=true, const int domain=0)
	Initialise the data in the dependent fields. More...

SOLVER_UTILS_EXPORT void	EvaluateExactSolution (int field, Array< OneD, NekDouble > &outfield, const NekDouble time)
	Evaluates an exact solution. More...

SOLVER_UTILS_EXPORT NekDouble	L2Error (unsigned int field, const Array< OneD, NekDouble > &exactsoln, bool Normalised=false)
	Compute the L2 error between fields and a given exact solution. More...

SOLVER_UTILS_EXPORT NekDouble	L2Error (unsigned int field, bool Normalised=false)
	Compute the L2 error of the fields. More...

SOLVER_UTILS_EXPORT Array< OneD, NekDouble >	ErrorExtraPoints (unsigned int field)
	Compute error (L2 and L_inf) over an larger set of quadrature points return [L2 Linf]. More...

SOLVER_UTILS_EXPORT void	Checkpoint_Output (const int n)
	Write checkpoint file of m_fields. More...

SOLVER_UTILS_EXPORT void	Checkpoint_Output (const int n, MultiRegions::ExpListSharedPtr &field, std::vector< Array< OneD, NekDouble > > &fieldcoeffs, std::vector< std::string > &variables)
	Write checkpoint file of custom data fields. More...

SOLVER_UTILS_EXPORT void	Checkpoint_BaseFlow (const int n)
	Write base flow file of m_fields. More...

SOLVER_UTILS_EXPORT void	WriteFld (const std::string &outname)
	Write field data to the given filename. More...

SOLVER_UTILS_EXPORT void	WriteFld (const std::string &outname, MultiRegions::ExpListSharedPtr &field, std::vector< Array< OneD, NekDouble > > &fieldcoeffs, std::vector< std::string > &variables)
	Write input fields to the given filename. More...

SOLVER_UTILS_EXPORT void	ImportFld (const std::string &infile, Array< OneD, MultiRegions::ExpListSharedPtr > &pFields)
	Input field data from the given file. More...

SOLVER_UTILS_EXPORT void	ImportFldToMultiDomains (const std::string &infile, Array< OneD, MultiRegions::ExpListSharedPtr > &pFields, const int ndomains)
	Input field data from the given file to multiple domains. More...

SOLVER_UTILS_EXPORT void	ImportFld (const std::string &infile, std::vector< std::string > &fieldStr, Array< OneD, Array< OneD, NekDouble > > &coeffs)
	Output a field. Input field data into array from the given file. More...

SOLVER_UTILS_EXPORT void	ImportFld (const std::string &infile, MultiRegions::ExpListSharedPtr &pField, std::string &pFieldName)
	Output a field. Input field data into ExpList from the given file. More...

SOLVER_UTILS_EXPORT void	SessionSummary (SummaryList &vSummary)
	Write out a session summary. More...

SOLVER_UTILS_EXPORT Array< OneD, MultiRegions::ExpListSharedPtr > &	UpdateFields ()

SOLVER_UTILS_EXPORT LibUtilities::FieldMetaDataMap &	UpdateFieldMetaDataMap ()
	Get hold of FieldInfoMap so it can be updated. More...

SOLVER_UTILS_EXPORT NekDouble	GetFinalTime ()
	Return final time. More...

SOLVER_UTILS_EXPORT int	GetNcoeffs ()

SOLVER_UTILS_EXPORT int	GetNcoeffs (const int eid)

SOLVER_UTILS_EXPORT int	GetNumExpModes ()

SOLVER_UTILS_EXPORT const Array< OneD, int >	GetNumExpModesPerExp ()

SOLVER_UTILS_EXPORT int	GetNvariables ()

SOLVER_UTILS_EXPORT const std::string	GetVariable (unsigned int i)

SOLVER_UTILS_EXPORT int	GetTraceTotPoints ()

SOLVER_UTILS_EXPORT int	GetTraceNpoints ()

SOLVER_UTILS_EXPORT int	GetExpSize ()

SOLVER_UTILS_EXPORT int	GetPhys_Offset (int n)

SOLVER_UTILS_EXPORT int	GetCoeff_Offset (int n)

SOLVER_UTILS_EXPORT int	GetTotPoints ()

SOLVER_UTILS_EXPORT int	GetTotPoints (int n)

SOLVER_UTILS_EXPORT int	GetNpoints ()

SOLVER_UTILS_EXPORT int	GetSteps ()

SOLVER_UTILS_EXPORT NekDouble	GetTimeStep ()

SOLVER_UTILS_EXPORT void	CopyFromPhysField (const int i, Array< OneD, NekDouble > &output)

SOLVER_UTILS_EXPORT void	CopyToPhysField (const int i, Array< OneD, NekDouble > &output)

SOLVER_UTILS_EXPORT void	SetSteps (const int steps)

SOLVER_UTILS_EXPORT void	ZeroPhysFields ()

SOLVER_UTILS_EXPORT void	FwdTransFields ()

SOLVER_UTILS_EXPORT void	SetModifiedBasis (const bool modbasis)

SOLVER_UTILS_EXPORT int	GetCheckpointNumber ()

SOLVER_UTILS_EXPORT void	SetCheckpointNumber (int num)

SOLVER_UTILS_EXPORT int	GetCheckpointSteps ()

SOLVER_UTILS_EXPORT void	SetCheckpointSteps (int num)

SOLVER_UTILS_EXPORT void	SetTime (const NekDouble time)

SOLVER_UTILS_EXPORT void	SetInitialStep (const int step)

SOLVER_UTILS_EXPORT void	SetBoundaryConditions (NekDouble time)
	Evaluates the boundary conditions at the given time. More...

virtual SOLVER_UTILS_EXPORT bool	v_NegatedOp ()
	Virtual function to identify if operator is negated in DoSolve. More...

Public Member Functions inherited from Nektar::SolverUtils::FluidInterface
virtual	~FluidInterface ()=default

virtual SOLVER_UTILS_EXPORT void	GetVelocity (const Array< OneD, const Array< OneD, NekDouble > > &physfield, Array< OneD, Array< OneD, NekDouble > > &velocity)=0
	Extract array with velocity from physfield. More...

virtual SOLVER_UTILS_EXPORT void	GetDensity (const Array< OneD, const Array< OneD, NekDouble > > &physfield, Array< OneD, NekDouble > &density)=0
	Extract array with density from physfield. More...

virtual SOLVER_UTILS_EXPORT void	GetPressure (const Array< OneD, const Array< OneD, NekDouble > > &physfield, Array< OneD, NekDouble > &pressure)=0
	Extract array with pressure from physfield. More...

Protected Member Functions
	CompressibleFlowSystem (const LibUtilities::SessionReaderSharedPtr &pSession, const SpatialDomains::MeshGraphSharedPtr &pGraph)

virtual void	v_InitObject ()
	Initialization object for CompressibleFlowSystem class. More...

void	InitialiseParameters ()
	Load CFS parameters from the session file. More...

void	InitAdvection ()
	Create advection and diffusion objects for CFS. More...

void	DoOdeRhs (const Array< OneD, const Array< OneD, NekDouble >> &inarray, Array< OneD, Array< OneD, NekDouble >> &outarray, const NekDouble time)
	Compute the right-hand side. More...

void	DoOdeProjection (const Array< OneD, const Array< OneD, NekDouble >> &inarray, Array< OneD, Array< OneD, NekDouble >> &outarray, const NekDouble time)
	Compute the projection and call the method for imposing the boundary conditions in case of discontinuous projection. More...

void	DoAdvection (const Array< OneD, const Array< OneD, NekDouble >> &inarray, Array< OneD, Array< OneD, NekDouble >> &outarray, const NekDouble time, const Array< OneD, const Array< OneD, NekDouble >> &pFwd, const Array< OneD, const Array< OneD, NekDouble >> &pBwd)
	Compute the advection terms for the right-hand side. More...

void	DoDiffusion (const Array< OneD, const Array< OneD, NekDouble >> &inarray, Array< OneD, Array< OneD, NekDouble >> &outarray, const Array< OneD, const Array< OneD, NekDouble >> &pFwd, const Array< OneD, const Array< OneD, NekDouble >> &pBwd)
	Add the diffusions terms to the right-hand side. More...

void	GetFluxVector (const Array< OneD, const Array< OneD, NekDouble >> &physfield, TensorOfArray3D< NekDouble > &flux)
	Return the flux vector for the compressible Euler equations. More...

void	GetFluxVectorDeAlias (const Array< OneD, const Array< OneD, NekDouble >> &physfield, TensorOfArray3D< NekDouble > &flux)
	Return the flux vector for the compressible Euler equations by using the de-aliasing technique. More...

void	SetBoundaryConditions (Array< OneD, Array< OneD, NekDouble >> &physarray, NekDouble time)

void	SetBoundaryConditionsBwdWeight ()
	Set up a weight on physical boundaries for boundary condition applications. More...

void	GetElmtTimeStep (const Array< OneD, const Array< OneD, NekDouble >> &inarray, Array< OneD, NekDouble > &tstep)
	Calculate the maximum timestep on each element subject to CFL restrictions. More...

virtual NekDouble	v_GetTimeStep (const Array< OneD, const Array< OneD, NekDouble > > &inarray)
	Calculate the maximum timestep subject to CFL restrictions. More...

virtual void	v_SetInitialConditions (NekDouble initialtime=0.0, bool dumpInitialConditions=true, const int domain=0)
	Set up logic for residual calculation. More...

NekDouble	GetGamma ()

const Array< OneD, const Array< OneD, NekDouble > > &	GetVecLocs ()

const Array< OneD, const Array< OneD, NekDouble > > &	GetNormals ()

virtual void	v_ExtraFldOutput (std::vector< Array< OneD, NekDouble > > &fieldcoeffs, std::vector< std::string > &variables)

virtual void	v_DoDiffusion (const Array< OneD, const Array< OneD, NekDouble >> &inarray, Array< OneD, Array< OneD, NekDouble >> &outarray, const Array< OneD, const Array< OneD, NekDouble >> &pFwd, const Array< OneD, const Array< OneD, NekDouble >> &pBwd)

virtual Array< OneD, NekDouble >	v_GetMaxStdVelocity (const NekDouble SpeedSoundFactor)
	Compute the advection velocity in the standard space for each element of the expansion. More...

virtual void	v_SteadyStateResidual (int step, Array< OneD, NekDouble > &L2)

Protected Member Functions inherited from Nektar::SolverUtils::AdvectionSystem
virtual SOLVER_UTILS_EXPORT bool	v_PostIntegrate (int step)

Protected Member Functions inherited from Nektar::SolverUtils::UnsteadySystem
SOLVER_UTILS_EXPORT	UnsteadySystem (const LibUtilities::SessionReaderSharedPtr &pSession, const SpatialDomains::MeshGraphSharedPtr &pGraph)
	Initialises UnsteadySystem class members. More...

SOLVER_UTILS_EXPORT NekDouble	MaxTimeStepEstimator ()
	Get the maximum timestep estimator for cfl control. More...

virtual SOLVER_UTILS_EXPORT void	v_DoSolve ()
	Solves an unsteady problem. More...

virtual SOLVER_UTILS_EXPORT void	v_DoInitialise ()
	Sets up initial conditions. More...

virtual SOLVER_UTILS_EXPORT void	v_GenerateSummary (SummaryList &s)
	Print a summary of time stepping parameters. More...

virtual SOLVER_UTILS_EXPORT void	v_AppendOutput1D (Array< OneD, Array< OneD, NekDouble >> &solution1D)
	Print the solution at each solution point in a txt file. More...

virtual SOLVER_UTILS_EXPORT NekDouble	v_GetTimeStep (const Array< OneD, const Array< OneD, NekDouble >> &inarray)
	Return the timestep to be used for the next step in the time-marching loop. More...

virtual SOLVER_UTILS_EXPORT bool	v_PreIntegrate (int step)

virtual SOLVER_UTILS_EXPORT bool	v_RequireFwdTrans ()

SOLVER_UTILS_EXPORT void	CheckForRestartTime (NekDouble &time, int &nchk)

SOLVER_UTILS_EXPORT void	SVVVarDiffCoeff (const Array< OneD, Array< OneD, NekDouble >> vel, StdRegions::VarCoeffMap &varCoeffMap)
	Evaluate the SVV diffusion coefficient according to Moura's paper where it should proportional to h time velocity. More...

virtual SOLVER_UTILS_EXPORT bool	UpdateTimeStepCheck ()

Protected Member Functions inherited from Nektar::SolverUtils::EquationSystem
SOLVER_UTILS_EXPORT	EquationSystem (const LibUtilities::SessionReaderSharedPtr &pSession, const SpatialDomains::MeshGraphSharedPtr &pGraph)
	Initialises EquationSystem class members. More...

virtual SOLVER_UTILS_EXPORT NekDouble	v_LinfError (unsigned int field, const Array< OneD, NekDouble > &exactsoln=NullNekDouble1DArray)
	Virtual function for the L_inf error computation between fields and a given exact solution. More...

virtual SOLVER_UTILS_EXPORT NekDouble	v_L2Error (unsigned int field, const Array< OneD, NekDouble > &exactsoln=NullNekDouble1DArray, bool Normalised=false)
	Virtual function for the L_2 error computation between fields and a given exact solution. More...

virtual SOLVER_UTILS_EXPORT void	v_TransCoeffToPhys ()
	Virtual function for transformation to physical space. More...

virtual SOLVER_UTILS_EXPORT void	v_TransPhysToCoeff ()
	Virtual function for transformation to coefficient space. More...

virtual SOLVER_UTILS_EXPORT void	v_EvaluateExactSolution (unsigned int field, Array< OneD, NekDouble > &outfield, const NekDouble time)

virtual SOLVER_UTILS_EXPORT void	v_Output (void)

virtual SOLVER_UTILS_EXPORT MultiRegions::ExpListSharedPtr	v_GetPressure (void)

Protected Attributes
SolverUtils::DiffusionSharedPtr	m_diffusion

ArtificialDiffusionSharedPtr	m_artificialDiffusion

Array< OneD, Array< OneD, NekDouble > >	m_vecLocs

NekDouble	m_gamma

std::string	m_shockCaptureType

NekDouble	m_filterAlpha

NekDouble	m_filterExponent

NekDouble	m_filterCutoff

bool	m_useFiltering

bool	m_useLocalTimeStep

Array< OneD, NekDouble >	m_muav

Array< OneD, NekDouble >	m_muavTrace

VariableConverterSharedPtr	m_varConv

std::vector< CFSBndCondSharedPtr >	m_bndConds

NekDouble	m_bndEvaluateTime

std::vector< SolverUtils::ForcingSharedPtr >	m_forcing

Protected Attributes inherited from Nektar::SolverUtils::AdvectionSystem
SolverUtils::AdvectionSharedPtr	m_advObject
	Advection term. More...

Protected Attributes inherited from Nektar::SolverUtils::UnsteadySystem
int	m_infosteps
	Number of time steps between outputting status information. More...

int	m_abortSteps
	Number of steps between checks for abort conditions. More...

int	m_filtersInfosteps
	Number of time steps between outputting filters information. More...

int	m_nanSteps

LibUtilities::TimeIntegrationSchemeSharedPtr	m_intScheme
	Wrapper to the time integration scheme. More...

LibUtilities::TimeIntegrationSchemeOperators	m_ode
	The time integration scheme operators to use. More...

NekDouble	m_epsilon

bool	m_explicitDiffusion
	Indicates if explicit or implicit treatment of diffusion is used. More...

bool	m_explicitAdvection
	Indicates if explicit or implicit treatment of advection is used. More...

bool	m_explicitReaction
	Indicates if explicit or implicit treatment of reaction is used. More...

bool	m_homoInitialFwd
	Flag to determine if simulation should start in homogeneous forward transformed state. More...

NekDouble	m_steadyStateTol
	Tolerance to which steady state should be evaluated at. More...

int	m_steadyStateSteps
	Check for steady state at step interval. More...

NekDouble	m_steadyStateRes = 1.0

NekDouble	m_steadyStateRes0 = 1.0

Array< OneD, Array< OneD, NekDouble > >	m_previousSolution
	Storage for previous solution for steady-state check. More...

std::ofstream	m_errFile

std::vector< int >	m_intVariables

std::vector< std::pair< std::string, FilterSharedPtr > >	m_filters

NekDouble	m_filterTimeWarning
	Number of time steps between outputting status information. More...

NekDouble	m_TimeIntegLambda =0.0
	coefff of spacial derivatives(rhs or m_F in GLM) in calculating the residual of the whole equation(used in unsteady time integrations) More...

bool	m_flagImplicitItsStatistics

bool	m_flagImplicitSolver = false

Array< OneD, NekDouble >	m_magnitdEstimat
	estimate the magnitude of each conserved varibles More...

Array< OneD, NekDouble >	m_locTimeStep
	local time step(notice only for jfnk other see m_cflSafetyFactor) More...

NekDouble	m_inArrayNorm =-1.0

int	m_TotLinItePerStep =0

int	m_StagesPerStep =1

bool	m_flagUpdatePreconMat

int	m_maxLinItePerNewton

int	m_TotNewtonIts =0

int	m_TotLinIts =0

int	m_TotImpStages =0

bool	m_CalcPhysicalAV = true
	flag to update artificial viscosity More...

Protected Attributes inherited from Nektar::SolverUtils::EquationSystem
LibUtilities::CommSharedPtr	m_comm
	Communicator. More...

bool	m_verbose

bool	m_root

LibUtilities::SessionReaderSharedPtr	m_session
	The session reader. More...

std::map< std::string, SolverUtils::SessionFunctionSharedPtr >	m_sessionFunctions
	Map of known SessionFunctions. More...

LibUtilities::FieldIOSharedPtr	m_fld
	Field input/output. More...

Array< OneD, MultiRegions::ExpListSharedPtr >	m_fields
	Array holding all dependent variables. More...

SpatialDomains::BoundaryConditionsSharedPtr	m_boundaryConditions
	Pointer to boundary conditions object. More...

SpatialDomains::MeshGraphSharedPtr	m_graph
	Pointer to graph defining mesh. More...

std::string	m_sessionName
	Name of the session. More...

NekDouble	m_time
	Current time of simulation. More...

int	m_initialStep
	Number of the step where the simulation should begin. More...

NekDouble	m_fintime
	Finish time of the simulation. More...

NekDouble	m_timestep
	Time step size. More...

NekDouble	m_timestepMax = -1.0
	Time step size. More...

NekDouble	m_lambda
	Lambda constant in real system if one required. More...

NekDouble	m_checktime
	Time between checkpoints. More...

NekDouble	m_lastCheckTime

NekDouble	m_TimeIncrementFactor

int	m_nchk
	Number of checkpoints written so far. More...

int	m_steps
	Number of steps to take. More...

int	m_checksteps
	Number of steps between checkpoints. More...

int	m_spacedim
	Spatial dimension (>= expansion dim). More...

int	m_expdim
	Expansion dimension. More...

bool	m_singleMode
	Flag to determine if single homogeneous mode is used. More...

bool	m_halfMode
	Flag to determine if half homogeneous mode is used. More...

bool	m_multipleModes
	Flag to determine if use multiple homogenenous modes are used. More...

bool	m_useFFT
	Flag to determine if FFT is used for homogeneous transform. More...

bool	m_homogen_dealiasing
	Flag to determine if dealiasing is used for homogeneous simulations. More...

bool	m_specHP_dealiasing
	Flag to determine if dealisising is usde for the Spectral/hp element discretisation. More...

enum MultiRegions::ProjectionType	m_projectionType
	Type of projection; e.g continuous or discontinuous. More...

Array< OneD, Array< OneD, NekDouble > >	m_traceNormals
	Array holding trace normals for DG simulations in the forwards direction. More...

Array< OneD, bool >	m_checkIfSystemSingular
	Flag to indicate if the fields should be checked for singularity. More...

LibUtilities::FieldMetaDataMap	m_fieldMetaDataMap
	Map to identify relevant solver info to dump in output fields. More...

int	m_NumQuadPointsError
	Number of Quadrature points used to work out the error. More...

enum HomogeneousType	m_HomogeneousType

NekDouble	m_LhomX
	physical length in X direction (if homogeneous) More...

NekDouble	m_LhomY
	physical length in Y direction (if homogeneous) More...

NekDouble	m_LhomZ
	physical length in Z direction (if homogeneous) More...

int	m_npointsX
	number of points in X direction (if homogeneous) More...

int	m_npointsY
	number of points in Y direction (if homogeneous) More...

int	m_npointsZ
	number of points in Z direction (if homogeneous) More...

int	m_HomoDirec
	number of homogenous directions More...

Friends
class	MemoryManager< CompressibleFlowSystem >

Additional Inherited Members
Public Attributes inherited from Nektar::SolverUtils::UnsteadySystem
NekDouble	m_cflSafetyFactor
	CFL safety factor (comprise between 0 to 1). More...

NekDouble	m_cflNonAcoustic

NekDouble	m_CFLGrowth
	CFL growth rate. More...

NekDouble	m_CFLEnd
	maximun cfl in cfl growth More...

Protected Types inherited from Nektar::SolverUtils::EquationSystem
enum	HomogeneousType { eHomogeneous1D , eHomogeneous2D , eHomogeneous3D , eNotHomogeneous }
	Parameter for homogeneous expansions. More...

Static Protected Attributes inherited from Nektar::SolverUtils::EquationSystem
static std::string	equationSystemTypeLookupIds []

Detailed Description

Definition at line 61 of file CompressibleFlowSystem.h.

Constructor & Destructor Documentation

◆ ~CompressibleFlowSystem()

Nektar::CompressibleFlowSystem::~CompressibleFlowSystem ( )

virtual

Destructor for CompressibleFlowSystem class.

Definition at line 153 of file CompressibleFlowSystem.cpp.

     {
  
     }

◆ CompressibleFlowSystem()

Nektar::CompressibleFlowSystem::CompressibleFlowSystem	(	const LibUtilities::SessionReaderSharedPtr &	pSession,
		const SpatialDomains::MeshGraphSharedPtr &	pGraph
	)

protected

Definition at line 45 of file CompressibleFlowSystem.cpp.

         : UnsteadySystem(pSession, pGraph),
           AdvectionSystem(pSession, pGraph)
     {
     }

Member Function Documentation

◆ DoAdvection()

void Nektar::CompressibleFlowSystem::DoAdvection	(	const Array< OneD, const Array< OneD, NekDouble >> &	inarray,
		Array< OneD, Array< OneD, NekDouble >> &	outarray,
		const NekDouble	time,
		const Array< OneD, const Array< OneD, NekDouble >> &	pFwd,
		const Array< OneD, const Array< OneD, NekDouble >> &	pBwd
	)

protected

Compute the advection terms for the right-hand side.

Definition at line 367 of file CompressibleFlowSystem.cpp.

     {
         int nvariables = inarray.size();
         Array<OneD, Array<OneD, NekDouble>> advVel(m_spacedim);
  
         m_advObject->Advect(nvariables, m_fields, advVel, inarray,
                             outarray, time, pFwd, pBwd);
     }

References Nektar::SolverUtils::AdvectionSystem::m_advObject, Nektar::SolverUtils::EquationSystem::m_fields, and Nektar::SolverUtils::EquationSystem::m_spacedim.

Referenced by DoOdeRhs().

◆ DoDiffusion()

void Nektar::CompressibleFlowSystem::DoDiffusion	(	const Array< OneD, const Array< OneD, NekDouble >> &	inarray,
		Array< OneD, Array< OneD, NekDouble >> &	outarray,
		const Array< OneD, const Array< OneD, NekDouble >> &	pFwd,
		const Array< OneD, const Array< OneD, NekDouble >> &	pBwd
	)

protected

Add the diffusions terms to the right-hand side.

Definition at line 384 of file CompressibleFlowSystem.cpp.

     {
         v_DoDiffusion(inarray, outarray, pFwd, pBwd);
  
         if (m_shockCaptureType != "Off" && m_shockCaptureType != "Physical")
         {
             m_artificialDiffusion->DoArtificialDiffusion(inarray, outarray);
         }
     }

References m_artificialDiffusion, m_shockCaptureType, and v_DoDiffusion().

Referenced by DoOdeRhs().

◆ DoOdeProjection()

void Nektar::CompressibleFlowSystem::DoOdeProjection	(	const Array< OneD, const Array< OneD, NekDouble >> &	inarray,
		Array< OneD, Array< OneD, NekDouble >> &	outarray,
		const NekDouble	time
	)

protected

Compute the projection and call the method for imposing the boundary conditions in case of discontinuous projection.

Definition at line 324 of file CompressibleFlowSystem.cpp.

     {
         int nvariables = inarray.size();
  
         switch(m_projectionType)
         {
             case MultiRegions::eDiscontinuous:
             {
                 // Just copy over array
                 int npoints = GetNpoints();
  
                 for (int i = 0; i < nvariables; ++i)
                 {
                     Vmath::Vcopy(npoints, inarray[i], 1, outarray[i], 1);
                     if (m_useFiltering)
                     {
                         m_fields[i]->ExponentialFilter(outarray[i],
                             m_filterAlpha, m_filterExponent, m_filterCutoff);
                     }
                 }
                 SetBoundaryConditions(outarray, time);
                 break;
             }
             case MultiRegions::eGalerkin:
             case MultiRegions::eMixed_CG_Discontinuous:
             {
                 NEKERROR(ErrorUtil::efatal, "No Continuous Galerkin for full "
                     "compressible Navier-Stokes equations");
                 break;
             }
             default:
                 NEKERROR(ErrorUtil::efatal, "Unknown projection scheme");
                 break;
         }
     }

References Nektar::MultiRegions::eDiscontinuous, Nektar::ErrorUtil::efatal, Nektar::MultiRegions::eGalerkin, Nektar::MultiRegions::eMixed_CG_Discontinuous, Nektar::SolverUtils::EquationSystem::GetNpoints(), Nektar::SolverUtils::EquationSystem::m_fields, m_filterAlpha, m_filterCutoff, m_filterExponent, Nektar::SolverUtils::EquationSystem::m_projectionType, m_useFiltering, NEKERROR, SetBoundaryConditions(), and Vmath::Vcopy().

Referenced by Nektar::CFSImplicit::NonlinSysEvaluatorCoeff(), Nektar::CFSImplicit::PreconCoeff(), and v_InitObject().

◆ DoOdeRhs()

void Nektar::CompressibleFlowSystem::DoOdeRhs	(	const Array< OneD, const Array< OneD, NekDouble >> &	inarray,
		Array< OneD, Array< OneD, NekDouble >> &	outarray,
		const NekDouble	time
	)

protected

Compute the right-hand side.

Definition at line 240 of file CompressibleFlowSystem.cpp.

     {
         int nvariables = inarray.size();
         int npoints    = GetNpoints();
         int nTracePts  = GetTraceTotPoints();
  
         m_bndEvaluateTime = time;
  
         // Store forwards/backwards space along trace space
         Array<OneD, Array<OneD, NekDouble>> Fwd(nvariables);
         Array<OneD, Array<OneD, NekDouble>> Bwd(nvariables);
  
         if (m_HomogeneousType == eHomogeneous1D)
         {
             Fwd = NullNekDoubleArrayOfArray;
             Bwd = NullNekDoubleArrayOfArray;
         }
         else
         {
             for (int i = 0; i < nvariables; ++i)
             {
                 Fwd[i] = Array<OneD, NekDouble>(nTracePts, 0.0);
                 Bwd[i] = Array<OneD, NekDouble>(nTracePts, 0.0);
                 m_fields[i]->GetFwdBwdTracePhys(inarray[i], Fwd[i], Bwd[i]);
             }
         }
  
         // Calculate advection
         LibUtilities::Timer timer;
         timer.Start();
         DoAdvection(inarray, outarray, time, Fwd, Bwd);
         timer.Stop();
         timer.AccumulateRegion("DoAdvection");
  
         // Negate results
         for (int i = 0; i < nvariables; ++i)
         {
             Vmath::Neg(npoints, outarray[i], 1);
         }
  
         // Add diffusion terms
         timer.Start();
         DoDiffusion(inarray, outarray, Fwd, Bwd);
         timer.Stop();
         timer.AccumulateRegion("DoDiffusion");
  
         // Add forcing terms
         for (auto &x : m_forcing)
         {
             x->Apply(m_fields, inarray, outarray, time);
         }
  
         if (m_useLocalTimeStep)
         {
             int nElements = m_fields[0]->GetExpSize();
             int nq, offset;
             NekDouble fac;
             Array<OneD, NekDouble> tmp;
  
             Array<OneD, NekDouble> tstep (nElements, 0.0);
             GetElmtTimeStep(inarray, tstep);
  
             // Loop over elements
             for (int n = 0; n < nElements; ++n)
             {
                 nq     = m_fields[0]->GetExp(n)->GetTotPoints();
                 offset = m_fields[0]->GetPhys_Offset(n);
                 fac    = tstep[n] / m_timestep;
                 for (int i = 0; i < nvariables; ++i)
                 {
                     Vmath::Smul(nq, fac, outarray[i] + offset, 1,
                                          tmp = outarray[i] + offset, 1);
                 }
             }
         }
     }

References Nektar::LibUtilities::Timer::AccumulateRegion(), DoAdvection(), DoDiffusion(), Nektar::SolverUtils::EquationSystem::eHomogeneous1D, GetElmtTimeStep(), Nektar::SolverUtils::EquationSystem::GetNpoints(), Nektar::SolverUtils::EquationSystem::GetTraceTotPoints(), m_bndEvaluateTime, Nektar::SolverUtils::EquationSystem::m_fields, m_forcing, Nektar::SolverUtils::EquationSystem::m_HomogeneousType, Nektar::SolverUtils::EquationSystem::m_timestep, m_useLocalTimeStep, Vmath::Neg(), Nektar::NullNekDoubleArrayOfArray, Vmath::Smul(), Nektar::LibUtilities::Timer::Start(), and Nektar::LibUtilities::Timer::Stop().

Referenced by v_InitObject(), and v_SteadyStateResidual().

◆ GetDensity()

void Nektar::CompressibleFlowSystem::GetDensity	(	const Array< OneD, const Array< OneD, NekDouble >> &	physfield,
		Array< OneD, NekDouble > &	density
	)

virtual

Definition at line 978 of file CompressibleFlowSystem.cpp.

     {
         density = physfield[0];
     }

◆ GetElmtMinHP()

Array< OneD, NekDouble > Nektar::CompressibleFlowSystem::GetElmtMinHP ( void )

Function to get estimate of min h/p factor per element.

Compute an estimate of minimum h/p for each element of the expansion.

Definition at line 1039 of file CompressibleFlowSystem.cpp.

 {
     int nElements               = m_fields[0]->GetExpSize();
     Array<OneD, NekDouble> hOverP(nElements, 1.0);
  
     // Determine h/p scaling
     Array<OneD, int> pOrderElmt = m_fields[0]->EvalBasisNumModesMaxPerExp();
     for (int e = 0; e < nElements; e++)
     {
         NekDouble h = 1.0e+10;
         switch(m_expdim)
         {
             case 3:
             {
                 LocalRegions::Expansion3DSharedPtr exp3D;
                 exp3D = m_fields[0]->GetExp(e)->as<LocalRegions::Expansion3D>();
                 for (int i = 0; i < exp3D->GetNtraces(); ++i)
                 {
                     h = min(h, exp3D->GetGeom3D()->GetEdge(i)->GetVertex(0)->
                         dist(*(exp3D->GetGeom3D()->GetEdge(i)->GetVertex(1))));
                 }
             break;
             }
  
             case 2:
             {
                 LocalRegions::Expansion2DSharedPtr exp2D;
                 exp2D = m_fields[0]->GetExp(e)->as<LocalRegions::Expansion2D>();
                 for (int i = 0; i < exp2D->GetNtraces(); ++i)
                 {
                     h = min(h, exp2D->GetGeom2D()->GetEdge(i)->GetVertex(0)->
                         dist(*(exp2D->GetGeom2D()->GetEdge(i)->GetVertex(1))));
                 }
             break;
             }
             case 1:
             {
                 LocalRegions::Expansion1DSharedPtr exp1D;
                 exp1D = m_fields[0]->GetExp(e)->as<LocalRegions::Expansion1D>();
  
                 h = min(h, exp1D->GetGeom1D()->GetVertex(0)->
                     dist(*(exp1D->GetGeom1D()->GetVertex(1))));
  
             break;
             }
             default:
             {
                 NEKERROR(ErrorUtil::efatal,"Dimension out of bound.")
             }
         }
  
         // Determine h/p scaling
         hOverP[e] = h/max(pOrderElmt[e]-1,1);
  
     }
     return hOverP;
 }

References Nektar::ErrorUtil::efatal, Nektar::LocalRegions::Expansion1D::GetGeom1D(), Nektar::SolverUtils::EquationSystem::m_expdim, Nektar::SolverUtils::EquationSystem::m_fields, and NEKERROR.

Referenced by Nektar::NavierStokesCFE::GetPhysicalAV(), and v_ExtraFldOutput().

◆ GetElmtTimeStep()

void Nektar::CompressibleFlowSystem::GetElmtTimeStep	(	const Array< OneD, const Array< OneD, NekDouble >> &	inarray,
		Array< OneD, NekDouble > &	tstep
	)

protected

Calculate the maximum timestep on each element subject to CFL restrictions.

Definition at line 596 of file CompressibleFlowSystem.cpp.

     {
         boost::ignore_unused(inarray);
  
         int nElements = m_fields[0]->GetExpSize();
  
         // Change value of m_timestep (in case it is set to zero)
         NekDouble tmp = m_timestep;
         m_timestep    = 1.0;
  
         Array<OneD, NekDouble> cfl(nElements);
         cfl = GetElmtCFLVals();
  
         // Factors to compute the time-step limit
         NekDouble alpha     = MaxTimeStepEstimator();
  
         // Loop over elements to compute the time-step limit for each element
         for (int n = 0; n < nElements; ++n)
         {
             tstep[n] = m_cflSafetyFactor * alpha / cfl[n];
         }
  
         // Restore value of m_timestep
         m_timestep = tmp;
     }

References Nektar::SolverUtils::AdvectionSystem::GetElmtCFLVals(), Nektar::SolverUtils::UnsteadySystem::m_cflSafetyFactor, Nektar::SolverUtils::EquationSystem::m_fields, Nektar::SolverUtils::EquationSystem::m_timestep, and Nektar::SolverUtils::UnsteadySystem::MaxTimeStepEstimator().

Referenced by DoOdeRhs(), Nektar::CFSImplicit::DoOdeRhsCoeff(), and v_GetTimeStep().

◆ GetFluxVector()

void Nektar::CompressibleFlowSystem::GetFluxVector	(	const Array< OneD, const Array< OneD, NekDouble >> &	physfield,
		TensorOfArray3D< NekDouble > &	flux
	)

protected

Return the flux vector for the compressible Euler equations.

Parameters

physfield	Fields.
flux	Resulting flux.

Definition at line 444 of file CompressibleFlowSystem.cpp.

     {
         auto nVariables = physfield.size();
         auto nPts = physfield[0].size();
  
         constexpr unsigned short maxVel = 3;
         constexpr unsigned short maxFld = 5;
  
         // hardcoding done for performance reasons
         ASSERTL1(nVariables <= maxFld, "GetFluxVector, hard coded max fields");
  
         for (size_t p = 0; p < nPts; ++p)
         {
             // local storage
             std::array<NekDouble, maxFld> fieldTmp;
             std::array<NekDouble, maxVel> velocity;
  
             // rearrenge and load data
             for (size_t f = 0; f < nVariables; ++f)
             {
                 fieldTmp[f] = physfield[f][p]; // load
             }
  
             // 1 / rho
             NekDouble oneOrho = 1.0 / fieldTmp[0];
  
             for (size_t d = 0; d < m_spacedim; ++d)
             {
                 // Flux vector for the rho equation
                 flux[0][d][p] = fieldTmp[d+1]; // store
                 // compute velocity
                 velocity[d] = fieldTmp[d+1] * oneOrho;
             }
  
             NekDouble pressure = m_varConv->GetPressure(fieldTmp.data());
             NekDouble ePlusP = fieldTmp[m_spacedim+1] + pressure;
             for (size_t f = 0; f < m_spacedim; ++f)
             {
                 // Flux vector for the velocity fields
                 for (size_t d = 0; d < m_spacedim; ++d)
                 {
                     flux[f+1][d][p] = velocity[d] * fieldTmp[f+1]; // store
                 }
  
                 // Add pressure to appropriate field
                 flux[f+1][f][p] += pressure;
  
                 // Flux vector for energy
                 flux[m_spacedim+1][f][p] = ePlusP * velocity[f]; // store
             }
  
         }
     }

References ASSERTL1, Nektar::SolverUtils::EquationSystem::m_spacedim, m_varConv, CellMLToNektar.cellml_metadata::p, and CG_Iterations::pressure.

Referenced by InitAdvection().

◆ GetFluxVectorDeAlias()

void Nektar::CompressibleFlowSystem::GetFluxVectorDeAlias	(	const Array< OneD, const Array< OneD, NekDouble >> &	physfield,
		TensorOfArray3D< NekDouble > &	flux
	)

protected

Return the flux vector for the compressible Euler equations by using the de-aliasing technique.

Parameters

physfield	Fields.
flux	Resulting flux.

Definition at line 507 of file CompressibleFlowSystem.cpp.

     {
         int i, j;
         int nq = physfield[0].size();
         int nVariables = m_fields.size();
  
         // Factor to rescale 1d points in dealiasing
         NekDouble OneDptscale = 2;
         nq = m_fields[0]->Get1DScaledTotPoints(OneDptscale);
  
         Array<OneD, NekDouble> pressure(nq);
         Array<OneD, Array<OneD, NekDouble>> velocity(m_spacedim);
  
         Array<OneD, Array<OneD, NekDouble>> physfield_interp(nVariables);
         TensorOfArray3D<NekDouble> flux_interp(nVariables);
  
         for (i = 0; i < nVariables; ++ i)
         {
             physfield_interp[i] = Array<OneD, NekDouble>(nq);
             flux_interp[i] = Array<OneD, Array<OneD, NekDouble>>(m_spacedim);
             m_fields[0]->PhysInterp1DScaled(
                 OneDptscale, physfield[i], physfield_interp[i]);
  
             for (j = 0; j < m_spacedim; ++j)
             {
                 flux_interp[i][j] = Array<OneD, NekDouble>(nq);
             }
         }
  
         // Flux vector for the rho equation
         for (i = 0; i < m_spacedim; ++i)
         {
             velocity[i] = Array<OneD, NekDouble>(nq);
  
             // Galerkin project solution back to original space
             m_fields[0]->PhysGalerkinProjection1DScaled(
                 OneDptscale, physfield_interp[i+1], flux[0][i]);
         }
  
         m_varConv->GetVelocityVector(physfield_interp, velocity);
         m_varConv->GetPressure      (physfield_interp, pressure);
  
         // Evaluation of flux vector for the velocity fields
         for (i = 0; i < m_spacedim; ++i)
         {
             for (j = 0; j < m_spacedim; ++j)
             {
                 Vmath::Vmul(nq, velocity[j], 1, physfield_interp[i+1], 1,
                             flux_interp[i+1][j], 1);
             }
  
             // Add pressure to appropriate field
             Vmath::Vadd(nq, flux_interp[i+1][i], 1, pressure,1,
                         flux_interp[i+1][i], 1);
         }
  
         // Galerkin project solution back to original space
         for (i = 0; i < m_spacedim; ++i)
         {
             for (j = 0; j < m_spacedim; ++j)
             {
                 m_fields[0]->PhysGalerkinProjection1DScaled(
                     OneDptscale, flux_interp[i+1][j], flux[i+1][j]);
             }
         }
  
         // Evaluation of flux vector for energy
         Vmath::Vadd(nq, physfield_interp[m_spacedim+1], 1, pressure, 1,
                     pressure, 1);
  
         for (j = 0; j < m_spacedim; ++j)
         {
             Vmath::Vmul(nq, velocity[j], 1, pressure, 1,
                         flux_interp[m_spacedim+1][j], 1);
  
             // Galerkin project solution back to original space
             m_fields[0]->PhysGalerkinProjection1DScaled(
                 OneDptscale,
                 flux_interp[m_spacedim+1][j],
                 flux[m_spacedim+1][j]);
         }
     }

References Nektar::SolverUtils::EquationSystem::m_fields, Nektar::SolverUtils::EquationSystem::m_spacedim, m_varConv, CG_Iterations::pressure, Vmath::Vadd(), and Vmath::Vmul().

Referenced by InitAdvection().

◆ GetGamma()

NekDouble Nektar::CompressibleFlowSystem::GetGamma ( )

inlineprotected

Definition at line 187 of file CompressibleFlowSystem.h.

         {
             return m_gamma;
         }

References m_gamma.

Referenced by InitAdvection().

◆ GetNormals()

const Array<OneD, const Array<OneD, NekDouble> >& Nektar::CompressibleFlowSystem::GetNormals ( )

inlineprotected

Definition at line 197 of file CompressibleFlowSystem.h.

         {
             return m_traceNormals;
         }

References Nektar::SolverUtils::EquationSystem::m_traceNormals.

Referenced by InitAdvection().

◆ GetPressure()

void Nektar::CompressibleFlowSystem::GetPressure	(	const Array< OneD, const Array< OneD, NekDouble >> &	physfield,
		Array< OneD, NekDouble > &	pressure
	)

virtual

Definition at line 968 of file CompressibleFlowSystem.cpp.

     {
         m_varConv->GetPressure(physfield, pressure);
     }

References m_varConv, and CG_Iterations::pressure.

◆ GetStabilityLimit()

NekDouble Nektar::CompressibleFlowSystem::GetStabilityLimit ( int n )

Function to calculate the stability limit for DG/CG.

Set the denominator to compute the time step when a cfl control is employed. This function is no longer used but is still here for being utilised in the future.

Parameters

n	Order of expansion element by element.

Definition at line 829 of file CompressibleFlowSystem.cpp.

     {
         ASSERTL0(n <= 20, "Illegal modes dimension for CFL calculation "
                           "(P has to be less then 20)");
  
         NekDouble CFLDG[21] = {  2.0000,   6.0000,  11.8424,  19.1569,
                                 27.8419,  37.8247,  49.0518,  61.4815,
                                 75.0797,  89.8181, 105.6700, 122.6200,
                                140.6400, 159.7300, 179.8500, 201.0100,
                                223.1800, 246.3600, 270.5300, 295.6900,
                                321.8300}; //CFLDG 1D [0-20]
         NekDouble CFL = 0.0;
  
         if (m_projectionType == MultiRegions::eDiscontinuous)
         {
             CFL = CFLDG[n];
         }
         else
         {
             NEKERROR(ErrorUtil::efatal, "Continuous Galerkin stability "
                 "coefficients not introduced yet.");
         }
  
         return CFL;
     }

References ASSERTL0, Nektar::MultiRegions::eDiscontinuous, Nektar::ErrorUtil::efatal, Nektar::SolverUtils::EquationSystem::m_projectionType, and NEKERROR.

Referenced by GetStabilityLimitVector().

◆ GetStabilityLimitVector()

Array< OneD, NekDouble > Nektar::CompressibleFlowSystem::GetStabilityLimitVector ( const Array< OneD, int > & ExpOrder )

Function to calculate the stability limit for DG/CG (a vector of them).

Compute the vector of denominators to compute the time step when a cfl control is employed. This function is no longer used but is still here for being utilised in the future.

Parameters

ExpOrder Order of expansion element by element.

Definition at line 862 of file CompressibleFlowSystem.cpp.

     {
         int i;
         Array<OneD,NekDouble> returnval(m_fields[0]->GetExpSize(), 0.0);
         for (i =0; i<m_fields[0]->GetExpSize(); i++)
         {
             returnval[i] = GetStabilityLimit(ExpOrder[i]);
         }
         return returnval;
     }

References Nektar::SolverUtils::EquationSystem::GetExpSize(), GetStabilityLimit(), and Nektar::SolverUtils::EquationSystem::m_fields.

◆ GetVecLocs()

const Array<OneD, const Array<OneD, NekDouble> >& Nektar::CompressibleFlowSystem::GetVecLocs ( )

inlineprotected

Definition at line 192 of file CompressibleFlowSystem.h.

         {
             return m_vecLocs;
         }

References m_vecLocs.

Referenced by InitAdvection().

◆ GetVelocity()

void Nektar::CompressibleFlowSystem::GetVelocity	(	const Array< OneD, const Array< OneD, NekDouble >> &	physfield,
		Array< OneD, Array< OneD, NekDouble >> &	velocity
	)

virtual

Definition at line 988 of file CompressibleFlowSystem.cpp.

     {
         m_varConv->GetVelocityVector(physfield, velocity);
     }

References m_varConv.

◆ HasConstantDensity()

virtual bool Nektar::CompressibleFlowSystem::HasConstantDensity ( )

inlinevirtual

Implements Nektar::SolverUtils::FluidInterface.

Definition at line 89 of file CompressibleFlowSystem.h.

         {
             return false;
         }

◆ InitAdvection()

void Nektar::CompressibleFlowSystem::InitAdvection ( )

protected

Create advection and diffusion objects for CFS.

Definition at line 194 of file CompressibleFlowSystem.cpp.

     {
         // Check if projection type is correct
         ASSERTL0(m_projectionType == MultiRegions::eDiscontinuous,
             "Unsupported projection type.");
  
         string advName, riemName;
         m_session->LoadSolverInfo("AdvectionType", advName, "WeakDG");
  
         m_advObject = SolverUtils::GetAdvectionFactory()
                                     .CreateInstance(advName, advName);
  
         if (m_specHP_dealiasing)
         {
             m_advObject->SetFluxVector(&CompressibleFlowSystem::
                                        GetFluxVectorDeAlias, this);
         }
         else
         {
             m_advObject->SetFluxVector(&CompressibleFlowSystem::
                                        GetFluxVector, this);
         }
  
         // Setting up Riemann solver for advection operator
         m_session->LoadSolverInfo("UpwindType", riemName, "Average");
  
         SolverUtils::RiemannSolverSharedPtr riemannSolver;
         riemannSolver = SolverUtils::GetRiemannSolverFactory()
                                     .CreateInstance(riemName, m_session);
  
         // Setting up parameters for advection operator Riemann solver
         riemannSolver->SetParam (
             "gamma",   &CompressibleFlowSystem::GetGamma,   this);
         riemannSolver->SetAuxVec(
             "vecLocs", &CompressibleFlowSystem::GetVecLocs, this);
         riemannSolver->SetVector(
             "N",       &CompressibleFlowSystem::GetNormals, this);
  
         // Concluding initialisation of advection / diffusion operators
         m_advObject->SetRiemannSolver(riemannSolver);
         m_advObject->InitObject      (m_session, m_fields);
     }

References ASSERTL0, Nektar::LibUtilities::NekFactory< tKey, tBase, tParam >::CreateInstance(), Nektar::MultiRegions::eDiscontinuous, Nektar::SolverUtils::GetAdvectionFactory(), GetFluxVector(), GetFluxVectorDeAlias(), GetGamma(), GetNormals(), Nektar::SolverUtils::GetRiemannSolverFactory(), GetVecLocs(), Nektar::SolverUtils::AdvectionSystem::m_advObject, Nektar::SolverUtils::EquationSystem::m_fields, Nektar::SolverUtils::EquationSystem::m_projectionType, Nektar::SolverUtils::EquationSystem::m_session, and Nektar::SolverUtils::EquationSystem::m_specHP_dealiasing.

Referenced by v_InitObject().

◆ InitialiseParameters()

void Nektar::CompressibleFlowSystem::InitialiseParameters ( )

protected

Load CFS parameters from the session file.

Definition at line 161 of file CompressibleFlowSystem.cpp.

     {
         // Get gamma parameter from session file.
         m_session->LoadParameter("Gamma", m_gamma, 1.4);
  
         // Shock capture
         m_session->LoadSolverInfo("ShockCaptureType",
                                   m_shockCaptureType, "Off");
  
         // Load parameters for exponential filtering
         m_session->MatchSolverInfo("ExponentialFiltering","True",
                                    m_useFiltering, false);
         if (m_useFiltering)
         {
             m_session->LoadParameter ("FilterAlpha", m_filterAlpha, 36);
             m_session->LoadParameter ("FilterExponent", m_filterExponent, 16);
             m_session->LoadParameter ("FilterCutoff", m_filterCutoff, 0);
         }
  
         // Load CFL for local time-stepping (for steady state)
         m_session->MatchSolverInfo("LocalTimeStep","True",
                                    m_useLocalTimeStep, false);
         if (m_useLocalTimeStep)
         {
             ASSERTL0(m_cflSafetyFactor != 0,
                 "Local time stepping requires CFL parameter.");
         }
  
     }

References ASSERTL0, Nektar::SolverUtils::UnsteadySystem::m_cflSafetyFactor, m_filterAlpha, m_filterCutoff, m_filterExponent, m_gamma, Nektar::SolverUtils::EquationSystem::m_session, m_shockCaptureType, m_useFiltering, and m_useLocalTimeStep.

Referenced by v_InitObject().

◆ SetBoundaryConditions()

void Nektar::CompressibleFlowSystem::SetBoundaryConditions	(	Array< OneD, Array< OneD, NekDouble >> &	physarray,
		NekDouble	time
	)

protected

Definition at line 399 of file CompressibleFlowSystem.cpp.

     {
         int nTracePts  = GetTraceTotPoints();
         int nvariables = physarray.size();
  
         Array<OneD, Array<OneD, NekDouble>> Fwd(nvariables);
         for (int i = 0; i < nvariables; ++i)
         {
             Fwd[i] = Array<OneD, NekDouble>(nTracePts);
             m_fields[i]->ExtractTracePhys(physarray[i], Fwd[i]);
         }
  
         if (m_bndConds.size())
         {
             // Loop over user-defined boundary conditions
             for (auto &x : m_bndConds)
             {
                 x->Apply(Fwd, physarray, time);
             }
         }
     }

References Nektar::SolverUtils::EquationSystem::GetTraceTotPoints(), m_bndConds, and Nektar::SolverUtils::EquationSystem::m_fields.

Referenced by DoOdeProjection().

◆ SetBoundaryConditionsBwdWeight()

void Nektar::CompressibleFlowSystem::SetBoundaryConditionsBwdWeight ( )

protected

Set up a weight on physical boundaries for boundary condition applications.

Definition at line 426 of file CompressibleFlowSystem.cpp.

     {
         if (m_bndConds.size())
         {
             // Loop over user-defined boundary conditions
             for (auto &x : m_bndConds)
             {
                 x->ApplyBwdWeight();
             }
         }
     }

References m_bndConds.

Referenced by Nektar::NavierStokesCFE::InitObject_Explicit(), and v_InitObject().

◆ v_DoDiffusion()

virtual void Nektar::CompressibleFlowSystem::v_DoDiffusion	(	const Array< OneD, const Array< OneD, NekDouble >> &	inarray,
		Array< OneD, Array< OneD, NekDouble >> &	outarray,
		const Array< OneD, const Array< OneD, NekDouble >> &	pFwd,
		const Array< OneD, const Array< OneD, NekDouble >> &	pBwd
	)

inlineprotectedvirtual

Reimplemented in Nektar::NavierStokesCFEAxisym, and Nektar::NavierStokesCFE.

Definition at line 206 of file CompressibleFlowSystem.h.

         {
             boost::ignore_unused(inarray, outarray, pFwd, pBwd);
             // Do nothing by default
         }

Referenced by DoDiffusion().

◆ v_ExtraFldOutput()

void Nektar::CompressibleFlowSystem::v_ExtraFldOutput	(	std::vector< Array< OneD, NekDouble > > &	fieldcoeffs,
		std::vector< std::string > &	variables
	)

protectedvirtual

Reimplemented from Nektar::SolverUtils::EquationSystem.

Definition at line 874 of file CompressibleFlowSystem.cpp.

     {
         bool extraFields;
         m_session->MatchSolverInfo("OutputExtraFields","True",
                                    extraFields, true);
         if (extraFields)
         {
             const int nPhys   = m_fields[0]->GetNpoints();
             const int nCoeffs = m_fields[0]->GetNcoeffs();
             Array<OneD, Array<OneD, NekDouble>> tmp(m_fields.size());
  
             for (int i = 0; i < m_fields.size(); ++i)
             {
                 tmp[i] = m_fields[i]->GetPhys();
             }
  
             Array<OneD, Array<OneD, NekDouble>> velocity(m_spacedim);
             Array<OneD, Array<OneD, NekDouble>> velFwd  (m_spacedim);
             for (int i = 0; i < m_spacedim; ++i)
             {
                 velocity[i] = Array<OneD, NekDouble> (nPhys);
                 velFwd[i]   = Array<OneD, NekDouble> (nCoeffs);
             }
  
             Array<OneD, NekDouble> pressure(nPhys), temperature(nPhys);
             Array<OneD, NekDouble> entropy(nPhys);
             Array<OneD, NekDouble> soundspeed(nPhys), mach(nPhys);
             Array<OneD, NekDouble> sensor(nPhys), SensorKappa(nPhys);
  
             m_varConv->GetVelocityVector(tmp, velocity);
             m_varConv->GetPressure  (tmp, pressure);
             m_varConv->GetTemperature(tmp, temperature);
             m_varConv->GetEntropy   (tmp, entropy);
             m_varConv->GetSoundSpeed(tmp, soundspeed);
             m_varConv->GetMach      (tmp, soundspeed, mach);
  
             int sensorOffset;
             m_session->LoadParameter ("SensorOffset", sensorOffset, 1);
             m_varConv->GetSensor (m_fields[0], tmp, sensor, SensorKappa,
                                     sensorOffset);
  
             Array<OneD, NekDouble> pFwd(nCoeffs), TFwd(nCoeffs);
             Array<OneD, NekDouble> sFwd(nCoeffs);
             Array<OneD, NekDouble> aFwd(nCoeffs), mFwd(nCoeffs);
             Array<OneD, NekDouble> sensFwd(nCoeffs);
  
             string velNames[3] = {"u", "v", "w"};
             for (int i = 0; i < m_spacedim; ++i)
             {
                 m_fields[0]->FwdTrans_IterPerExp(velocity[i], velFwd[i]);
                 variables.push_back(velNames[i]);
                 fieldcoeffs.push_back(velFwd[i]);
             }
  
             m_fields[0]->FwdTrans_IterPerExp(pressure,   pFwd);
             m_fields[0]->FwdTrans_IterPerExp(temperature,TFwd);
             m_fields[0]->FwdTrans_IterPerExp(entropy,    sFwd);
             m_fields[0]->FwdTrans_IterPerExp(soundspeed, aFwd);
             m_fields[0]->FwdTrans_IterPerExp(mach,       mFwd);
             m_fields[0]->FwdTrans_IterPerExp(sensor,     sensFwd);
  
             variables.push_back  ("p");
             variables.push_back  ("T");
             variables.push_back  ("s");
             variables.push_back  ("a");
             variables.push_back  ("Mach");
             variables.push_back  ("Sensor");
             fieldcoeffs.push_back(pFwd);
             fieldcoeffs.push_back(TFwd);
             fieldcoeffs.push_back(sFwd);
             fieldcoeffs.push_back(aFwd);
             fieldcoeffs.push_back(mFwd);
             fieldcoeffs.push_back(sensFwd);
  
             if (m_artificialDiffusion)
             {
                 // Get min h/p
                 m_artificialDiffusion->SetElmtHP(GetElmtMinHP());
                 // reuse pressure
                 Array<OneD, NekDouble> sensorFwd(nCoeffs);
                 m_artificialDiffusion->GetArtificialViscosity(tmp, pressure);
                 m_fields[0]->FwdTrans_IterPerExp(pressure,   sensorFwd);
  
                 variables.push_back  ("ArtificialVisc");
                 fieldcoeffs.push_back(sensorFwd);
             }
         }
     }

References GetElmtMinHP(), m_artificialDiffusion, Nektar::SolverUtils::EquationSystem::m_fields, Nektar::SolverUtils::EquationSystem::m_session, Nektar::SolverUtils::EquationSystem::m_spacedim, m_varConv, and CG_Iterations::pressure.

◆ v_GetMaxStdVelocity()

Array< OneD, NekDouble > Nektar::CompressibleFlowSystem::v_GetMaxStdVelocity ( const NekDouble SpeedSoundFactor )

protectedvirtual

Compute the advection velocity in the standard space for each element of the expansion.

Reimplemented from Nektar::SolverUtils::AdvectionSystem.

Definition at line 701 of file CompressibleFlowSystem.cpp.

     {
         int nTotQuadPoints = GetTotPoints();
         int n_element      = m_fields[0]->GetExpSize();
         int expdim         = m_fields[0]->GetGraph()->GetMeshDimension();
         int nfields        = m_fields.size();
         int offset;
         Array<OneD, NekDouble> tmp;
  
         Array<OneD, Array<OneD, NekDouble>> physfields(nfields);
         for (int i = 0; i < nfields; ++i)
         {
             physfields[i] = m_fields[i]->GetPhys();
         }
  
         Array<OneD, NekDouble> stdV(n_element, 0.0);
  
         // Getting the velocity vector on the 2D normal space
         Array<OneD, Array<OneD, NekDouble>> velocity   (m_spacedim);
         Array<OneD, Array<OneD, NekDouble>> stdVelocity(m_spacedim);
         Array<OneD, Array<OneD, NekDouble>> stdSoundSpeed(m_spacedim);
         Array<OneD, NekDouble>               soundspeed (nTotQuadPoints);
         LibUtilities::PointsKeyVector        ptsKeys;
  
         for (int i = 0; i < m_spacedim; ++i)
         {
             velocity   [i]   = Array<OneD, NekDouble>(nTotQuadPoints);
             stdVelocity[i]   = Array<OneD, NekDouble>(nTotQuadPoints, 0.0);
             stdSoundSpeed[i] = Array<OneD, NekDouble>(nTotQuadPoints, 0.0);
         }
  
         m_varConv->GetVelocityVector(physfields, velocity);
         m_varConv->GetSoundSpeed    (physfields, soundspeed);
  
         for (int el = 0; el < n_element; ++el)
         {
             ptsKeys = m_fields[0]->GetExp(el)->GetPointsKeys();
             offset  = m_fields[0]->GetPhys_Offset(el);
             int nq = m_fields[0]->GetExp(el)->GetTotPoints();
  
             const SpatialDomains::GeomFactorsSharedPtr metricInfo =
                 m_fields[0]->GetExp(el)->GetGeom()->GetMetricInfo();
             const Array<TwoD, const NekDouble> &gmat =
                 m_fields[0]->GetExp(el)->GetGeom()->GetMetricInfo()
                                                   ->GetDerivFactors(ptsKeys);
  
             // Convert to standard element
             //    consider soundspeed in all directions
             //    (this might overestimate the cfl)
             if (metricInfo->GetGtype() == SpatialDomains::eDeformed)
             {
                 // d xi/ dx = gmat = 1/J * d x/d xi
                 for (int i = 0; i < expdim; ++i)
                 {
                     Vmath::Vmul(nq, gmat[i], 1,
                                     velocity[0] + offset, 1,
                                     tmp = stdVelocity[i] + offset, 1);
                     Vmath::Vmul(nq, gmat[i], 1,
                                     soundspeed + offset, 1,
                                     tmp = stdSoundSpeed[i] + offset, 1);
                     for (int j = 1; j < expdim; ++j)
                     {
                         Vmath::Vvtvp(nq, gmat[expdim*j+i], 1,
                                          velocity[j] + offset, 1,
                                          stdVelocity[i] + offset, 1,
                                          tmp = stdVelocity[i] + offset, 1);
                         Vmath::Vvtvp(nq, gmat[expdim*j+i], 1,
                                          soundspeed + offset, 1,
                                          stdSoundSpeed[i] + offset, 1,
                                          tmp = stdSoundSpeed[i] + offset, 1);
                     }
                 }
             }
             else
             {
                 for (int i = 0; i < expdim; ++i)
                 {
                     Vmath::Smul(nq, gmat[i][0],
                                     velocity[0] + offset, 1,
                                     tmp = stdVelocity[i] + offset, 1);
                     Vmath::Smul(nq, gmat[i][0],
                                     soundspeed + offset, 1,
                                     tmp = stdSoundSpeed[i] + offset, 1);
                     for (int j = 1; j < expdim; ++j)
                     {
                         Vmath::Svtvp(nq, gmat[expdim*j+i][0],
                                          velocity[j] + offset, 1,
                                          stdVelocity[i] + offset, 1,
                                          tmp = stdVelocity[i] + offset, 1);
                         Vmath::Svtvp(nq, gmat[expdim*j+i][0],
                                          soundspeed + offset, 1,
                                          stdSoundSpeed[i] + offset, 1,
                                          tmp = stdSoundSpeed[i] + offset, 1);
                     }
                 }
             }
  
             NekDouble vel;
             for (int i = 0; i < nq; ++i)
             {
                 NekDouble pntVelocity = 0.0;
                 for (int j = 0; j < expdim; ++j)
                 {
                     // Add sound speed
                     vel = std::abs(stdVelocity[j][offset + i]) +
                           SpeedSoundFactor * 
                           std::abs(stdSoundSpeed[j][offset + i]);
                     pntVelocity += vel * vel;
                 }
                 pntVelocity = sqrt(pntVelocity);
                 if (pntVelocity > stdV[el])
                 {
                     stdV[el] = pntVelocity;
                 }
             }
         }
  
         return stdV;
     }

References tinysimd::abs(), Nektar::SpatialDomains::eDeformed, Nektar::SolverUtils::EquationSystem::GetTotPoints(), Nektar::SolverUtils::EquationSystem::m_fields, Nektar::SolverUtils::EquationSystem::m_spacedim, m_varConv, Vmath::Smul(), tinysimd::sqrt(), Vmath::Svtvp(), Vmath::Vmul(), and Vmath::Vvtvp().

◆ v_GetTimeStep()

NekDouble Nektar::CompressibleFlowSystem::v_GetTimeStep ( const Array< OneD, const Array< OneD, NekDouble > > & inarray )

protectedvirtual

Calculate the maximum timestep subject to CFL restrictions.

Definition at line 627 of file CompressibleFlowSystem.cpp.

     {
         int nElements = m_fields[0]->GetExpSize();
         Array<OneD, NekDouble> tstep (nElements, 0.0);
  
         GetElmtTimeStep(inarray, tstep);
  
         // Get the minimum time-step limit and return the time-step
         NekDouble TimeStep = Vmath::Vmin(nElements, tstep, 1);
         m_comm->AllReduce(TimeStep, LibUtilities::ReduceMin);
  
         NekDouble tmp = m_timestep;
         m_timestep    = TimeStep;
  
         Array<OneD, NekDouble> cflNonAcoustic(nElements,0.0);
         cflNonAcoustic = GetElmtCFLVals(false);
  
         // Get the minimum time-step limit and return the time-step
         NekDouble MaxcflNonAcoustic = Vmath::Vmax(nElements, cflNonAcoustic, 1);
         m_comm->AllReduce(MaxcflNonAcoustic, LibUtilities::ReduceMax);
  
         m_cflNonAcoustic = MaxcflNonAcoustic;
         m_timestep = tmp;
  
         return TimeStep;
     }

References Nektar::SolverUtils::AdvectionSystem::GetElmtCFLVals(), GetElmtTimeStep(), Nektar::SolverUtils::UnsteadySystem::m_cflNonAcoustic, Nektar::SolverUtils::EquationSystem::m_comm, Nektar::SolverUtils::EquationSystem::m_fields, Nektar::SolverUtils::EquationSystem::m_timestep, Nektar::LibUtilities::ReduceMax, Nektar::LibUtilities::ReduceMin, Vmath::Vmax(), and Vmath::Vmin().

◆ v_InitObject()

void Nektar::CompressibleFlowSystem::v_InitObject ( )

protectedvirtual

Initialization object for CompressibleFlowSystem class.

Reimplemented from Nektar::SolverUtils::AdvectionSystem.

Reimplemented in Nektar::NavierStokesImplicitCFE, Nektar::NavierStokesCFEAxisym, Nektar::NavierStokesCFE, Nektar::EulerImplicitCFE, Nektar::EulerCFE, and Nektar::CFSImplicit.

Definition at line 56 of file CompressibleFlowSystem.cpp.

     {
         AdvectionSystem::v_InitObject();
  
         for (int i = 0; i < m_fields.size(); i++)
         {
             // Use BwdTrans to make sure initial condition is in solution space
             m_fields[i]->BwdTrans(m_fields[i]->GetCoeffs(),
                                   m_fields[i]->UpdatePhys());
         }
  
         m_varConv = MemoryManager<VariableConverter>::AllocateSharedPtr(
                     m_session, m_spacedim);
  
         ASSERTL0(m_session->DefinesSolverInfo("UPWINDTYPE"),
                  "No UPWINDTYPE defined in session.");
  
         // Do not forwards transform initial condition
         m_homoInitialFwd = false;
  
         // Set up locations of velocity vector.
         m_vecLocs = Array<OneD, Array<OneD, NekDouble>>(1);
         m_vecLocs[0] = Array<OneD, NekDouble>(m_spacedim);
         for (int i = 0; i < m_spacedim; ++i)
         {
             m_vecLocs[0][i] = 1 + i;
         }
  
         // Loading parameters from session file
         InitialiseParameters();
  
         // Setting up advection and diffusion operators
         InitAdvection();
  
         // Create artificial diffusion
         if (m_shockCaptureType != "Off")
         {
             if (m_shockCaptureType == "Physical")
             {
                 int nPts = m_fields[0]->GetTotPoints();
                 m_muav = Array<OneD, NekDouble>(nPts, 0.0);
  
                 int nTracePts = m_fields[0]->GetTrace()->GetTotPoints();
                 m_muavTrace = Array<OneD, NekDouble> (nTracePts,0.0);
             }
             else
             {
                 m_artificialDiffusion = GetArtificialDiffusionFactory()
                                         .CreateInstance(m_shockCaptureType,
                                                         m_session,
                                                         m_fields,
                                                         m_spacedim);
             }
         }
  
         // Forcing terms for the sponge region
         m_forcing = SolverUtils::Forcing::Load(m_session, shared_from_this(),
                                         m_fields, m_fields.size());
  
         // User-defined boundary conditions
         int cnt = 0;
         for (int n = 0; n < m_fields[0]->GetBndConditions().size(); ++n)
         {
             std::string type =
                 m_fields[0]->GetBndConditions()[n]->GetUserDefined();
  
             if (m_fields[0]->GetBndConditions()[n]->GetBoundaryConditionType()
                 == SpatialDomains::ePeriodic)
             {
                 continue;
             }
  
             if (!type.empty())
             {
                 m_bndConds.push_back(GetCFSBndCondFactory().CreateInstance(
                         type,
                         m_session,
                         m_fields,
                         m_traceNormals,
                         m_spacedim,
                         n,
                         cnt));
             }
             cnt += m_fields[0]->GetBndCondExpansions()[n]->GetExpSize();
         }
  
         m_ode.DefineOdeRhs    (&CompressibleFlowSystem::DoOdeRhs, this);
         m_ode.DefineProjection(
                                &CompressibleFlowSystem::DoOdeProjection, this);
  
         SetBoundaryConditionsBwdWeight();
     }

References Nektar::MemoryManager< DataType >::AllocateSharedPtr(), ASSERTL0, Nektar::LibUtilities::NekFactory< tKey, tBase, tParam >::CreateInstance(), Nektar::LibUtilities::TimeIntegrationSchemeOperators::DefineOdeRhs(), Nektar::LibUtilities::TimeIntegrationSchemeOperators::DefineProjection(), DoOdeProjection(), DoOdeRhs(), Nektar::SpatialDomains::ePeriodic, Nektar::GetArtificialDiffusionFactory(), Nektar::GetCFSBndCondFactory(), InitAdvection(), InitialiseParameters(), Nektar::SolverUtils::Forcing::Load(), m_artificialDiffusion, m_bndConds, Nektar::SolverUtils::EquationSystem::m_fields, m_forcing, Nektar::SolverUtils::UnsteadySystem::m_homoInitialFwd, m_muav, m_muavTrace, Nektar::SolverUtils::UnsteadySystem::m_ode, Nektar::SolverUtils::EquationSystem::m_session, m_shockCaptureType, Nektar::SolverUtils::EquationSystem::m_spacedim, Nektar::SolverUtils::EquationSystem::m_traceNormals, m_varConv, m_vecLocs, SetBoundaryConditionsBwdWeight(), and Nektar::SolverUtils::AdvectionSystem::v_InitObject().

Referenced by Nektar::CFSImplicit::v_InitObject(), Nektar::EulerCFE::v_InitObject(), and Nektar::NavierStokesCFE::v_InitObject().

◆ v_SetInitialConditions()

void Nektar::CompressibleFlowSystem::v_SetInitialConditions	(	NekDouble	initialtime = `0.0`,
		bool	dumpInitialConditions = `true`,
		const int	domain = `0`
	)

protectedvirtual

Set up logic for residual calculation.

Reimplemented from Nektar::SolverUtils::EquationSystem.

Reimplemented in Nektar::IsentropicVortex.

Definition at line 658 of file CompressibleFlowSystem.cpp.

     {
         boost::ignore_unused(domain);
  
         EquationSystem::v_SetInitialConditions(initialtime, false);
  
         // insert white noise in initial condition
         NekDouble Noise;
         int phystot = m_fields[0]->GetTotPoints();
         Array<OneD, NekDouble> noise(phystot);
  
         m_session->LoadParameter("Noise", Noise,0.0);
         int m_nConvectiveFields =  m_fields.size();
  
         if (Noise > 0.0)
         {
             int seed = - m_comm->GetRank()*m_nConvectiveFields;
             for (int i = 0; i < m_nConvectiveFields; i++)
             {
                 Vmath::FillWhiteNoise(phystot, Noise, noise, 1,
                                       seed);
                 --seed;
                 Vmath::Vadd(phystot, m_fields[i]->GetPhys(), 1,
                             noise, 1, m_fields[i]->UpdatePhys(), 1);
                 m_fields[i]->FwdTrans_IterPerExp(m_fields[i]->GetPhys(),
                                                  m_fields[i]->UpdateCoeffs());
             }
         }
  
         if (dumpInitialConditions && m_checksteps)
         {
             Checkpoint_Output(m_nchk);
             m_nchk++;
         }
     }

References Nektar::SolverUtils::EquationSystem::Checkpoint_Output(), Vmath::FillWhiteNoise(), Nektar::SolverUtils::EquationSystem::m_checksteps, Nektar::SolverUtils::EquationSystem::m_comm, Nektar::SolverUtils::EquationSystem::m_fields, Nektar::SolverUtils::EquationSystem::m_nchk, Nektar::SolverUtils::EquationSystem::m_session, Nektar::SolverUtils::EquationSystem::v_SetInitialConditions(), and Vmath::Vadd().

◆ v_SteadyStateResidual()

void Nektar::CompressibleFlowSystem::v_SteadyStateResidual	(	int	step,
		Array< OneD, NekDouble > &	L2
	)

protectedvirtual

Reimplemented from Nektar::SolverUtils::UnsteadySystem.

Definition at line 995 of file CompressibleFlowSystem.cpp.

     {
         boost::ignore_unused(step);
         const int nPoints = GetTotPoints();
         const int nFields = m_fields.size();
         Array<OneD, Array<OneD, NekDouble>> rhs (nFields);
         Array<OneD, Array<OneD, NekDouble>> inarray (nFields);
         for (int i = 0; i < nFields; ++i)
         {
             rhs[i] =   Array<OneD, NekDouble> (nPoints,0.0);
             inarray[i] =   m_fields[i]->UpdatePhys();
         }
         
         DoOdeRhs(inarray,rhs,m_time);
  
         // Holds L2 errors.
         Array<OneD, NekDouble> tmp;
         Array<OneD, NekDouble> RHSL2    (nFields);
         Array<OneD, NekDouble> residual(nFields);
  
         for (int i = 0; i < nFields; ++i)
         {
             tmp = rhs[i];
  
             Vmath::Vmul(nPoints, tmp, 1, tmp, 1, tmp, 1);
             residual[i] = Vmath::Vsum(nPoints, tmp, 1);
         }
  
         m_comm->AllReduce(residual , LibUtilities::ReduceSum);
  
         NekDouble onPoints = 1.0/NekDouble(nPoints);
         for (int i = 0; i < nFields; ++i)
         {
             L2[i] = sqrt(residual[i]*onPoints);
         }
     }

References DoOdeRhs(), Nektar::SolverUtils::EquationSystem::GetTotPoints(), Nektar::SolverUtils::EquationSystem::m_comm, Nektar::SolverUtils::EquationSystem::m_fields, Nektar::SolverUtils::EquationSystem::m_time, Nektar::LibUtilities::ReduceSum, tinysimd::sqrt(), Vmath::Vmul(), and Vmath::Vsum().

Friends And Related Function Documentation

◆ MemoryManager< CompressibleFlowSystem >

friend class MemoryManager< CompressibleFlowSystem >

friend

Definition at line 1 of file CompressibleFlowSystem.h.

Member Data Documentation

◆ m_artificialDiffusion

ArtificialDiffusionSharedPtr Nektar::CompressibleFlowSystem::m_artificialDiffusion

protected

Definition at line 100 of file CompressibleFlowSystem.h.

Referenced by DoDiffusion(), Nektar::NavierStokesCFE::GetArtificialViscosity(), Nektar::NavierStokesImplicitCFE::v_DoDiffusionCoeff(), v_ExtraFldOutput(), Nektar::NavierStokesCFE::v_ExtraFldOutput(), and v_InitObject().

◆ m_bndConds

std::vector<CFSBndCondSharedPtr> Nektar::CompressibleFlowSystem::m_bndConds

protected

Definition at line 124 of file CompressibleFlowSystem.h.

Referenced by Nektar::CFSImplicit::NumCalcRiemFluxJac(), SetBoundaryConditions(), SetBoundaryConditionsBwdWeight(), and v_InitObject().

◆ m_bndEvaluateTime

NekDouble Nektar::CompressibleFlowSystem::m_bndEvaluateTime

protected

Definition at line 126 of file CompressibleFlowSystem.h.

Referenced by Nektar::CFSImplicit::CalcTraceNumericalFlux(), Nektar::CFSImplicit::DoImplicitSolveCoeff(), DoOdeRhs(), Nektar::CFSImplicit::GetTraceJac(), Nektar::CFSImplicit::NonlinSysEvaluatorCoeff(), Nektar::CFSImplicit::PreconCoeff(), Nektar::NavierStokesCFE::v_DoDiffusion(), and Nektar::NavierStokesImplicitCFE::v_DoDiffusionCoeff().

◆ m_diffusion

SolverUtils::DiffusionSharedPtr Nektar::CompressibleFlowSystem::m_diffusion

protected

Definition at line 99 of file CompressibleFlowSystem.h.

Referenced by Nektar::CFSImplicit::CalcTraceNumericalFlux(), Nektar::NavierStokesCFE::Ducros(), Nektar::NavierStokesCFE::InitObject_Explicit(), Nektar::CFSImplicit::NumCalcRiemFluxJac(), Nektar::NavierStokesImplicitCFE::v_CalcPhysDeriv(), Nektar::NavierStokesCFE::v_DoDiffusion(), Nektar::NavierStokesImplicitCFE::v_DoDiffusionCoeff(), and Nektar::NavierStokesCFE::v_ExtraFldOutput().

◆ m_filterAlpha

NekDouble Nektar::CompressibleFlowSystem::m_filterAlpha

protected

Definition at line 106 of file CompressibleFlowSystem.h.

Referenced by DoOdeProjection(), and InitialiseParameters().

◆ m_filterCutoff

NekDouble Nektar::CompressibleFlowSystem::m_filterCutoff

protected

Definition at line 108 of file CompressibleFlowSystem.h.

Referenced by DoOdeProjection(), and InitialiseParameters().

◆ m_filterExponent

NekDouble Nektar::CompressibleFlowSystem::m_filterExponent

protected

Definition at line 107 of file CompressibleFlowSystem.h.

Referenced by DoOdeProjection(), and InitialiseParameters().

◆ m_forcing

std::vector<SolverUtils::ForcingSharedPtr> Nektar::CompressibleFlowSystem::m_forcing

protected

Definition at line 129 of file CompressibleFlowSystem.h.

Referenced by DoOdeRhs(), Nektar::CFSImplicit::DoOdeRhsCoeff(), and v_InitObject().

◆ m_gamma

NekDouble Nektar::CompressibleFlowSystem::m_gamma

protected

Definition at line 102 of file CompressibleFlowSystem.h.

◆ m_muav

Array<OneD, NekDouble> Nektar::CompressibleFlowSystem::m_muav

protected

Definition at line 115 of file CompressibleFlowSystem.h.

Referenced by Nektar::NavierStokesCFE::GetPhysicalAV(), Nektar::NavierStokesCFE::v_ExtraFldOutput(), Nektar::NavierStokesImplicitCFE::v_GetFluxDerivJacDirctn(), Nektar::NavierStokesCFE::v_GetViscousFluxVector(), Nektar::NavierStokesCFE::v_GetViscousFluxVectorDeAlias(), and v_InitObject().

◆ m_muavTrace

Array<OneD, NekDouble> Nektar::CompressibleFlowSystem::m_muavTrace

protected

Definition at line 118 of file CompressibleFlowSystem.h.

Referenced by Nektar::NavierStokesImplicitCFE::v_GetFluxDerivJacDirctn(), and v_InitObject().

◆ m_shockCaptureType

std::string Nektar::CompressibleFlowSystem::m_shockCaptureType

protected

Definition at line 103 of file CompressibleFlowSystem.h.

Referenced by DoDiffusion(), InitialiseParameters(), Nektar::NavierStokesCFE::InitObject_Explicit(), Nektar::CFSImplicit::NumCalcRiemFluxJac(), Nektar::NavierStokesCFE::v_DoDiffusion(), Nektar::NavierStokesImplicitCFE::v_DoDiffusionCoeff(), Nektar::NavierStokesCFE::v_ExtraFldOutput(), Nektar::NavierStokesImplicitCFE::v_GetFluxDerivJacDirctn(), Nektar::NavierStokesCFE::v_GetViscousFluxVector(), Nektar::NavierStokesCFE::v_GetViscousFluxVectorDeAlias(), and v_InitObject().

◆ m_useFiltering

bool Nektar::CompressibleFlowSystem::m_useFiltering

protected

Definition at line 109 of file CompressibleFlowSystem.h.

Referenced by DoOdeProjection(), and InitialiseParameters().

◆ m_useLocalTimeStep

bool Nektar::CompressibleFlowSystem::m_useLocalTimeStep

protected

Definition at line 112 of file CompressibleFlowSystem.h.

Referenced by DoOdeRhs(), Nektar::CFSImplicit::DoOdeRhsCoeff(), and InitialiseParameters().

◆ m_varConv

VariableConverterSharedPtr Nektar::CompressibleFlowSystem::m_varConv

protected

◆ m_vecLocs

Array<OneD, Array<OneD, NekDouble> > Nektar::CompressibleFlowSystem::m_vecLocs

protected

Definition at line 101 of file CompressibleFlowSystem.h.

Referenced by GetVecLocs(), and v_InitObject().

Public Member Functions

Protected Member Functions

Protected Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ~CompressibleFlowSystem()

◆ CompressibleFlowSystem()

Member Function Documentation

◆ DoAdvection()

◆ DoDiffusion()

◆ DoOdeProjection()

◆ DoOdeRhs()

◆ GetDensity()

◆ GetElmtMinHP()

◆ GetElmtTimeStep()

◆ GetFluxVector()

◆ GetFluxVectorDeAlias()

◆ GetGamma()

◆ GetNormals()

◆ GetPressure()

◆ GetStabilityLimit()

◆ GetStabilityLimitVector()

◆ GetVecLocs()

◆ GetVelocity()

◆ HasConstantDensity()

◆ InitAdvection()

◆ InitialiseParameters()

◆ SetBoundaryConditions()

◆ SetBoundaryConditionsBwdWeight()

◆ v_DoDiffusion()

◆ v_ExtraFldOutput()

◆ v_GetMaxStdVelocity()

◆ v_GetTimeStep()

◆ v_InitObject()

◆ v_SetInitialConditions()

◆ v_SteadyStateResidual()

Friends And Related Function Documentation

◆ MemoryManager< CompressibleFlowSystem >

Member Data Documentation

◆ m_artificialDiffusion

◆ m_bndConds

◆ m_bndEvaluateTime

◆ m_diffusion

◆ m_filterAlpha

◆ m_filterCutoff

◆ m_filterExponent

◆ m_forcing

◆ m_gamma

◆ m_muav

◆ m_muavTrace

◆ m_shockCaptureType

◆ m_useFiltering

◆ m_useLocalTimeStep

◆ m_varConv

◆ m_vecLocs