#include <UnsteadyAdvection.h>

Inheritance diagram for Nektar::UnsteadyAdvection:

Public Member Functions
virtual	~UnsteadyAdvection ()
	Destructor. More...

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...

Static Public Member Functions
static SolverUtils::EquationSystemSharedPtr	create (const LibUtilities::SessionReaderSharedPtr &pSession, const SpatialDomains::MeshGraphSharedPtr &pGraph)
	Creates an instance of this class. More...

Static Public Attributes
static std::string	className
	Name of class. More...

Protected Member Functions
	UnsteadyAdvection (const LibUtilities::SessionReaderSharedPtr &pSession, const SpatialDomains::MeshGraphSharedPtr &pGraph)
	Session reader. More...

void	GetFluxVector (const Array< OneD, Array< OneD, NekDouble > > &physfield, Array< OneD, Array< OneD, Array< OneD, NekDouble > > > &flux)
	Evaluate the flux at each solution point. More...

void	GetFluxVectorDeAlias (const Array< OneD, Array< OneD, NekDouble > > &physfield, Array< OneD, Array< OneD, Array< OneD, NekDouble > > > &flux)
	Evaluate the flux at each solution point using dealiasing. More...

void	DoOdeRhs (const Array< OneD, const Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &outarray, const NekDouble time)
	Compute the RHS. More...

void	DoOdeProjection (const Array< OneD, const Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &outarray, const NekDouble time)
	Compute the projection. More...

Array< OneD, NekDouble > &	GetNormalVelocity ()
	Get the normal velocity. More...

virtual void	v_InitObject ()
	Initialise the object. More...

virtual void	v_GenerateSummary (SolverUtils::SummaryList &s)
	Print Summary. More...

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

virtual SOLVER_UTILS_EXPORT Array< OneD, NekDouble >	v_GetMaxStdVelocity (const NekDouble SpeedSoundFactor=1.0)

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_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 ()

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

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_SetInitialConditions (NekDouble initialtime=0.0, bool dumpInitialConditions=true, const int domain=0)

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)

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

Protected Attributes
SolverUtils::RiemannSolverSharedPtr	m_riemannSolver

Array< OneD, Array< OneD, NekDouble > >	m_velocity
	Advection velocity. More...

Array< OneD, NekDouble >	m_traceVn

int	m_planeNumber

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...

Private Attributes
NekDouble	m_waveFreq

Friends
class	MemoryManager< UnsteadyAdvection >

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 44 of file UnsteadyAdvection.h.

Constructor & Destructor Documentation

◆ ~UnsteadyAdvection()

Nektar::UnsteadyAdvection::~UnsteadyAdvection ( )

virtual

Destructor.

Unsteady linear advection equation destructor.

Definition at line 166 of file UnsteadyAdvection.cpp.

167 {

168 }

◆ UnsteadyAdvection()

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

protected

Session reader.

Definition at line 48 of file UnsteadyAdvection.cpp.

         : UnsteadySystem(pSession, pGraph),
           AdvectionSystem(pSession, pGraph)
     {
         m_planeNumber = 0;
     }

References m_planeNumber.

Member Function Documentation

◆ create()

static SolverUtils::EquationSystemSharedPtr Nektar::UnsteadyAdvection::create	(	const LibUtilities::SessionReaderSharedPtr &	pSession,
		const SpatialDomains::MeshGraphSharedPtr &	pGraph
	)

inlinestatic

Creates an instance of this class.

Definition at line 50 of file UnsteadyAdvection.h.

         {
             SolverUtils::EquationSystemSharedPtr p = MemoryManager<
                 UnsteadyAdvection>::AllocateSharedPtr(pSession, pGraph);
             p->InitObject();
             return p;
         }

References CellMLToNektar.cellml_metadata::p.

◆ DoOdeProjection()

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

protected

Compute the projection.

Compute the projection for the linear advection equation.

Parameters

inarray	Given fields.
outarray	Calculated solution.
time	Time.

Definition at line 243 of file UnsteadyAdvection.cpp.

     {
         // Counter variable
         int i;
  
         // Number of fields (variables of the problem)
         int nVariables = inarray.size();
  
         // Set the boundary conditions
         SetBoundaryConditions(time);
  
         // Switch on the projection type (Discontinuous or Continuous)
         switch(m_projectionType)
         {
             // Discontinuous projection
             case MultiRegions::eDiscontinuous:
             {
                 // Number of quadrature points
                 int nQuadraturePts = GetNpoints();
  
                 // Just copy over array
                 for(i = 0; i < nVariables; ++i)
                 {
                     Vmath::Vcopy(nQuadraturePts, inarray[i], 1, outarray[i], 1);
                 }
                 break;
             }
  
             // Continuous projection
             case MultiRegions::eGalerkin:
             case MultiRegions::eMixed_CG_Discontinuous:
             {
                 Array<OneD, NekDouble> coeffs(m_fields[0]->GetNcoeffs(),0.0);
                 for(i = 0; i < nVariables; ++i)
                 {
                     m_fields[i]->FwdTrans(inarray[i], coeffs);
                     m_fields[i]->BwdTrans_IterPerExp(coeffs, outarray[i]);
                 }
                 break;
             }
  
             default:
                 ASSERTL0(false,"Unknown projection scheme");
                 break;
         }
     }

References ASSERTL0, Nektar::MultiRegions::eDiscontinuous, Nektar::MultiRegions::eGalerkin, Nektar::MultiRegions::eMixed_CG_Discontinuous, Nektar::SolverUtils::EquationSystem::GetNcoeffs(), Nektar::SolverUtils::EquationSystem::GetNpoints(), Nektar::SolverUtils::EquationSystem::m_fields, Nektar::SolverUtils::EquationSystem::m_projectionType, Nektar::SolverUtils::EquationSystem::SetBoundaryConditions(), and Vmath::Vcopy().

Referenced by v_InitObject().

◆ DoOdeRhs()

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

protected

Compute the RHS.

Compute the right-hand side for the linear advection equation.

Parameters

inarray	Given fields.
outarray	Calculated solution.
time	Time.

Definition at line 206 of file UnsteadyAdvection.cpp.

     {
         // Counter variable
         int i;
  
         // Number of fields (variables of the problem)
         int nVariables = inarray.size();
  
         // Number of solution points
         int nSolutionPts = GetNpoints();
  
 LibUtilities::Timer timer;
 timer.Start();
         // RHS computation using the new advection base class
         m_advObject->Advect(nVariables, m_fields, m_velocity, inarray,
                             outarray, time);
 timer.Stop();
 // Elapsed time
 timer.AccumulateRegion("Advect");
  
         // Negate the RHS
         for (i = 0; i < nVariables; ++i)
         {
             Vmath::Neg(nSolutionPts, outarray[i], 1);
         }
     }

References Nektar::LibUtilities::Timer::AccumulateRegion(), Nektar::SolverUtils::EquationSystem::GetNpoints(), Nektar::SolverUtils::AdvectionSystem::m_advObject, Nektar::SolverUtils::EquationSystem::m_fields, m_velocity, Vmath::Neg(), Nektar::LibUtilities::Timer::Start(), and Nektar::LibUtilities::Timer::Stop().

Referenced by v_InitObject().

◆ GetFluxVector()

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

protected

Evaluate the flux at each solution point.

Return the flux vector for the linear advection equation.

Parameters

i	Component of the flux vector to calculate.
physfield	Fields.
flux	Resulting flux.

Definition at line 300 of file UnsteadyAdvection.cpp.

     {
         ASSERTL1(flux[0].size() == m_velocity.size(),
                  "Dimension of flux array and velocity array do not match");
  
         int i , j;
         int nq = physfield[0].size();
  
         for (i = 0; i < flux.size(); ++i)
         {
             for (j = 0; j < flux[0].size(); ++j)
             {
                 Vmath::Vmul(nq, physfield[i], 1, m_velocity[j], 1,
                             flux[i][j], 1);
             }
         }
     }

References ASSERTL1, m_velocity, and Vmath::Vmul().

Referenced by v_InitObject().

◆ GetFluxVectorDeAlias()

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

protected

Evaluate the flux at each solution point using dealiasing.

Return the flux vector for the linear advection equation using the dealiasing technique.

Parameters

i	Component of the flux vector to calculate.
physfield	Fields.
flux	Resulting flux.

Definition at line 328 of file UnsteadyAdvection.cpp.

     {
         ASSERTL1(flux[0].size() == m_velocity.size(),
                  "Dimension of flux array and velocity array do not match");
  
         int i, j;
         int nq = physfield[0].size();
         int nVariables = physfield.size();
  
         // Factor to rescale 1d points in dealiasing
         NekDouble OneDptscale = 2;
  
         Array<OneD, Array<OneD, NekDouble> >
             advVel_plane(m_velocity.size());
  
         // Get number of points to dealias a cubic non-linearity
         nq = m_fields[0]->Get1DScaledTotPoints(OneDptscale);
  
         // Initialisation of higher-space variables
         Array<OneD, Array<OneD, NekDouble> >physfieldInterp(nVariables);
         Array<OneD, Array<OneD, NekDouble> >velocityInterp(m_expdim);
         Array<OneD, Array<OneD, Array<OneD, NekDouble> > >fluxInterp(nVariables);
  
         // Interpolation to higher space of physfield
         for (i = 0; i < nVariables; ++i)
         {
             physfieldInterp[i] = Array<OneD, NekDouble>(nq);
             fluxInterp[i] = Array<OneD, Array<OneD, NekDouble> >(m_expdim);
             for (j = 0; j < m_expdim; ++j)
             {
                 fluxInterp[i][j] = Array<OneD, NekDouble>(nq);
             }
  
             m_fields[0]->PhysInterp1DScaled(
                 OneDptscale, physfield[i], physfieldInterp[i]);
         }
  
         // Interpolation to higher space of velocity
         for (j = 0; j < m_expdim; ++j)
         {
             velocityInterp[j] = Array<OneD, NekDouble>(nq);
  
             m_fields[0]->PhysInterp1DScaled(
                 OneDptscale, m_velocity[j], velocityInterp[j]);
         }
  
         // Evaluation of flux vector in the higher space
         for (i = 0; i < flux.size(); ++i)
         {
             for (j = 0; j < flux[0].size(); ++j)
             {
                 Vmath::Vmul(nq, physfieldInterp[i], 1, velocityInterp[j], 1,
                             fluxInterp[i][j], 1);
             }
         }
  
         // Galerkin project solution back to original space
         for (i = 0; i < nVariables; ++i)
         {
             for (j = 0; j < m_spacedim; ++j)
             {
                 m_fields[0]->PhysGalerkinProjection1DScaled(
                     OneDptscale, fluxInterp[i][j], flux[i][j]);
             }
         }
     }

References ASSERTL1, Nektar::SolverUtils::EquationSystem::m_expdim, Nektar::SolverUtils::EquationSystem::m_fields, Nektar::SolverUtils::EquationSystem::m_spacedim, m_velocity, and Vmath::Vmul().

Referenced by v_InitObject().

◆ GetNormalVelocity()

Array< OneD, NekDouble > & Nektar::UnsteadyAdvection::GetNormalVelocity ( )

protected

Get the normal velocity.

Get the normal velocity for the linear advection equation.

Definition at line 173 of file UnsteadyAdvection.cpp.

     {
         // Number of trace (interface) points
         int i;
         int nTracePts = GetTraceNpoints();
  
         // Auxiliary variable to compute the normal velocity
         Array<OneD, NekDouble> tmp(nTracePts);
  
         // Reset the normal velocity
         Vmath::Zero(nTracePts, m_traceVn, 1);
  
         for (i = 0; i < m_velocity.size(); ++i)
         {
             m_fields[0]->ExtractTracePhys(m_velocity[i], tmp);
  
             Vmath::Vvtvp(nTracePts,
                          m_traceNormals[i], 1,
                          tmp,               1,
                          m_traceVn,         1,
                          m_traceVn,         1);
         }
  
         return m_traceVn;
     }

References Nektar::SolverUtils::EquationSystem::GetTraceNpoints(), Nektar::SolverUtils::EquationSystem::m_fields, Nektar::SolverUtils::EquationSystem::m_traceNormals, m_traceVn, m_velocity, Vmath::Vvtvp(), and Vmath::Zero().

Referenced by v_InitObject().

◆ v_GenerateSummary()

void Nektar::UnsteadyAdvection::v_GenerateSummary ( SolverUtils::SummaryList & s )

protectedvirtual

Print Summary.

Reimplemented from Nektar::SolverUtils::UnsteadySystem.

Definition at line 397 of file UnsteadyAdvection.cpp.

     {
         AdvectionSystem::v_GenerateSummary(s);
     }

References Nektar::SolverUtils::UnsteadySystem::v_GenerateSummary().

◆ v_InitObject()

void Nektar::UnsteadyAdvection::v_InitObject ( )

protectedvirtual

Initialise the object.

Initialisation object for the unsteady linear advection equation.

Reimplemented from Nektar::SolverUtils::AdvectionSystem.

Definition at line 60 of file UnsteadyAdvection.cpp.

     {
         // Call to the initialisation object of UnsteadySystem
         AdvectionSystem::v_InitObject();
  
         m_session->LoadParameter("wavefreq",   m_waveFreq, 0.0);
         // Read the advection velocities from session file
  
         std::vector<std::string> vel;
         vel.push_back("Vx");
         vel.push_back("Vy");
         vel.push_back("Vz");
  
         // Resize the advection velocities vector to dimension of the problem
         vel.resize(m_spacedim);
  
         // Store in the global variable m_velocity the advection velocities
         m_velocity = Array<OneD, Array<OneD, NekDouble> >(m_spacedim);
         GetFunction( "AdvectionVelocity")->Evaluate(vel,  m_velocity);
  
         // Type of advection class to be used
         switch(m_projectionType)
         {
             // Continuous field
             case MultiRegions::eGalerkin:
             {
                 string advName;
                 m_session->LoadSolverInfo(
                     "AdvectionType", advName, "NonConservative");
                 m_advObject = SolverUtils::
                     GetAdvectionFactory().CreateInstance(advName, advName);
                 if (m_specHP_dealiasing)
                 {
                     m_advObject->SetFluxVector(
                         &UnsteadyAdvection::GetFluxVectorDeAlias, this);
                 }
                 else
                 {
                     m_advObject->SetFluxVector(
                         &UnsteadyAdvection::GetFluxVector, this);
                 }
                 break;
             }
             // Discontinuous field
             case MultiRegions::eDiscontinuous:
             {
                 // Do not forwards transform initial condition
                 m_homoInitialFwd = false;
  
                 // Define the normal velocity fields
                 if (m_fields[0]->GetTrace())
                 {
                     m_traceVn = Array<OneD, NekDouble>(GetTraceNpoints());
                 }
  
                 string advName;
                 string riemName;
                 m_session->LoadSolverInfo(
                     "AdvectionType", advName, "WeakDG");
                 m_advObject = SolverUtils::
                     GetAdvectionFactory().CreateInstance(advName, advName);
                 if (m_specHP_dealiasing)
                 {
                     m_advObject->SetFluxVector(
                         &UnsteadyAdvection::GetFluxVectorDeAlias, this);
                 }
                 else
                 {
                     m_advObject->SetFluxVector(
                         &UnsteadyAdvection::GetFluxVector, this);
                 }
                 m_session->LoadSolverInfo(
                     "UpwindType", riemName, "Upwind");
                 m_riemannSolver = SolverUtils::
                     GetRiemannSolverFactory().CreateInstance(
                         riemName, m_session);
                 m_riemannSolver->SetScalar(
                     "Vn", &UnsteadyAdvection::GetNormalVelocity, this);
  
                 m_advObject->SetRiemannSolver(m_riemannSolver);
                 m_advObject->InitObject(m_session, m_fields);
                 break;
             }
             default:
             {
                 ASSERTL0(false, "Unsupported projection type.");
                 break;
             }
         }
  
         // If explicit it computes RHS and PROJECTION for the time integration
         if (m_explicitAdvection)
         {
             m_ode.DefineOdeRhs     (&UnsteadyAdvection::DoOdeRhs,        this);
             m_ode.DefineProjection (&UnsteadyAdvection::DoOdeProjection, this);
         }
         // Otherwise it gives an error (no implicit integration)
         else
         {
             ASSERTL0(false, "Implicit unsteady Advection not set up.");
         }
     }

Friends And Related Function Documentation

◆ MemoryManager< UnsteadyAdvection >

friend class MemoryManager< UnsteadyAdvection >

friend

Definition at line 1 of file UnsteadyAdvection.h.

Member Data Documentation

◆ className

string Nektar::UnsteadyAdvection::className

static

Initial value:

= SolverUtils::GetEquationSystemFactory().
        RegisterCreatorFunction("UnsteadyAdvection",
                                UnsteadyAdvection::create,
                                "Unsteady Advection equation.")

Name of class.

Definition at line 60 of file UnsteadyAdvection.h.

◆ m_planeNumber

int Nektar::UnsteadyAdvection::m_planeNumber

protected

Definition at line 74 of file UnsteadyAdvection.h.

Referenced by UnsteadyAdvection().

◆ m_riemannSolver

SolverUtils::RiemannSolverSharedPtr Nektar::UnsteadyAdvection::m_riemannSolver

protected

Definition at line 66 of file UnsteadyAdvection.h.

Referenced by v_InitObject().

◆ m_traceVn

Array<OneD, NekDouble> Nektar::UnsteadyAdvection::m_traceVn

protected

Definition at line 70 of file UnsteadyAdvection.h.

Referenced by GetNormalVelocity(), and v_InitObject().

◆ m_velocity

Array<OneD, Array<OneD, NekDouble> > Nektar::UnsteadyAdvection::m_velocity

protected

Advection velocity.

Definition at line 69 of file UnsteadyAdvection.h.

Referenced by DoOdeRhs(), GetFluxVector(), GetFluxVectorDeAlias(), GetNormalVelocity(), and v_InitObject().

◆ m_waveFreq

NekDouble Nektar::UnsteadyAdvection::m_waveFreq

private

Definition at line 112 of file UnsteadyAdvection.h.

Referenced by v_InitObject().

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Member Functions

Protected Attributes

Private Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ~UnsteadyAdvection()

◆ UnsteadyAdvection()

Member Function Documentation

◆ create()

◆ DoOdeProjection()

◆ DoOdeRhs()

◆ GetFluxVector()

◆ GetFluxVectorDeAlias()

◆ GetNormalVelocity()

◆ v_GenerateSummary()

◆ v_InitObject()

Friends And Related Function Documentation

◆ MemoryManager< UnsteadyAdvection >

Member Data Documentation

◆ className

◆ m_planeNumber

◆ m_riemannSolver

◆ m_traceVn

◆ m_velocity

◆ m_waveFreq