#include <AcousticSystem.h>

Inheritance diagram for Nektar::AcousticSystem:

Public Member Functions
virtual	~AcousticSystem ()
	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 ()

virtual SOLVER_UTILS_EXPORT void	v_InitObject (bool DeclareField=true) override
	Init object for UnsteadySystem class. More...

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)

SOLVER_UTILS_EXPORT LibUtilities::TimeIntegrationSchemeSharedPtr &	GetTimeIntegrationScheme ()
	Returns the time integration scheme. More...

SOLVER_UTILS_EXPORT LibUtilities::TimeIntegrationSchemeOperators &	GetTimeIntegrationSchemeOperators ()
	Returns the time integration scheme operators. More...

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

SOLVER_UTILS_EXPORT void	InitObject (bool DeclareField=true)
	Initialises the members of this object. More...

SOLVER_UTILS_EXPORT void	DoInitialise (bool dumpInitialConditions=true)
	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 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 NekDouble	LinfError (unsigned int field, const Array< OneD, NekDouble > &exactsoln=NullNekDouble1DArray)
	Linf error computation. 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, const Array< OneD, const NekDouble > &input)

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 int	GetInfoSteps ()

SOLVER_UTILS_EXPORT void	SetInfoSteps (int num)

SOLVER_UTILS_EXPORT void	SetIterationNumberPIT (int num)

SOLVER_UTILS_EXPORT void	SetWindowNumberPIT (int num)

SOLVER_UTILS_EXPORT Array< OneD, const Array< OneD, NekDouble > >	GetTraceNormals ()

SOLVER_UTILS_EXPORT void	SetTime (const NekDouble time)

SOLVER_UTILS_EXPORT void	SetTimeStep (const NekDouble timestep)

SOLVER_UTILS_EXPORT void	SetInitialStep (const int step)

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

SOLVER_UTILS_EXPORT bool	NegatedOp ()
	Identify if operator is negated in DoSolve. More...

SOLVER_UTILS_EXPORT bool	ParallelInTime ()
	Check if solver use Parallel-in-Time. More...

Protected Member Functions
	AcousticSystem (const LibUtilities::SessionReaderSharedPtr &pSession, const SpatialDomains::MeshGraphSharedPtr &pGraph)
	Initialises UnsteadySystem class members. More...

virtual void	v_InitObject (bool DeclareFields=true) override
	Initialization object for the AcousticSystem class. 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...

virtual void	v_AddLinTerm (const Array< OneD, const Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &outarray)

virtual void	v_GetFluxVector (const Array< OneD, Array< OneD, NekDouble > > &physfield, Array< OneD, Array< OneD, Array< OneD, NekDouble > > > &flux)=0

virtual void	v_RiemannInvariantBC (int bcRegion, int cnt, Array< OneD, Array< OneD, NekDouble > > &Fwd, Array< OneD, Array< OneD, NekDouble > > &BfFwd, Array< OneD, Array< OneD, NekDouble > > &physarray)=0

virtual bool	v_PreIntegrate (int step) override
	v_PreIntegrate More...

virtual void	v_Output () override

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

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

const Array< OneD, const Array< OneD, NekDouble > > &	GetNormals ()
	Get the normal vectors. More...

const Array< OneD, const Array< OneD, NekDouble > > &	GetVecLocs ()
	Get the locations of the components of the directed fields within the fields array. More...

const Array< OneD, const Array< OneD, NekDouble > > &	GetBasefieldFwdBwd ()
	Get the baseflow field. More...

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

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...

virtual SOLVER_UTILS_EXPORT void	v_InitObject (bool DeclareField=true) override
	Init object for UnsteadySystem class. More...

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

virtual SOLVER_UTILS_EXPORT void	v_PrintStatusInformation (const int step, const NekDouble cpuTime)
	Print Status Information. More...

virtual SOLVER_UTILS_EXPORT void	v_PrintSummaryStatistics (const NekDouble intTime)
	Print Summary Statistics. More...

virtual SOLVER_UTILS_EXPORT void	v_DoInitialise (bool dumpInitialConditions=true) override
	Sets up initial conditions. More...

virtual SOLVER_UTILS_EXPORT void	v_GenerateSummary (SummaryList &s) override
	Print a summary of time stepping parameters. 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_PostIntegrate (int step)

virtual SOLVER_UTILS_EXPORT bool	v_RequireFwdTrans ()

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

virtual SOLVER_UTILS_EXPORT bool	v_UpdateTimeStepCheck ()

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

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...

SOLVER_UTILS_EXPORT void	DoDummyProjection (const Array< OneD, const Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &outarray, const NekDouble time)
	Perform dummy projection. More...

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 void	v_InitObject (bool DeclareFeld=true)
	Initialisation object for EquationSystem. More...

virtual SOLVER_UTILS_EXPORT void	v_DoInitialise (bool dumpInitialConditions=true)
	Virtual function for initialisation implementation. More...

virtual SOLVER_UTILS_EXPORT void	v_DoSolve ()
	Virtual function for solve implementation. 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_GenerateSummary (SummaryList &l)
	Virtual function for generating summary information. 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 bool	v_NegatedOp (void)
	Virtual function to identify if operator is negated in DoSolve. More...

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

Protected Attributes
int	m_ip
	indices of the fields More...

int	m_irho

int	m_iu

bool	m_conservative
	we are dealing with a conservative formualtion More...

SolverUtils::CouplingSharedPtr	m_coupling

SolverUtils::AdvectionSharedPtr	m_advection

std::vector< SolverUtils::ForcingSharedPtr >	m_forcing

SolverUtils::RiemannSolverSharedPtr	m_riemannSolver

Array< OneD, Array< OneD, NekDouble > >	m_bfFwdBwd

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

Array< OneD, Array< OneD, NekDouble > >	m_bf

std::vector< std::string >	m_bfNames

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

Protected Attributes inherited from Nektar::SolverUtils::UnsteadySystem
LibUtilities::TimeIntegrationSchemeSharedPtr	m_intScheme
	Wrapper to the time integration scheme. More...

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

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

std::vector< int >	m_intVariables

NekDouble	m_cflSafetyFactor
	CFL safety factor (comprise between 0 to 1). More...

NekDouble	m_CFLGrowth
	CFL growth rate. More...

NekDouble	m_CFLEnd
	Maximun cfl in cfl growth. More...

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

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...

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

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

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

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

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

std::ofstream	m_errFile

NekDouble	m_epsilon
	Diffusion coefficient. More...

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

bool	m_verbose

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_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_infosteps
	Number of time steps between outputting status information. More...

int	m_iterPIT = 0
	Number of parallel-in-time time iteration. More...

int	m_windowPIT = 0
	Index of windows for parallel-in-time time iteration. 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...

Array< OneD, NekDouble >	m_movingFrameVelsxyz
	Moving frame of reference velocities. More...

Array< OneD, NekDouble >	m_movingFrameTheta
	Moving frame of reference angles with respect to the. More...

boost::numeric::ublas::matrix< NekDouble >	m_movingFrameProjMat
	Projection matrix for transformation between inertial and moving. 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 Member Functions
NekDouble	GetCFLEstimate ()

void	SetBoundaryConditions (Array< OneD, Array< OneD, NekDouble > > &physarray, NekDouble time)
	Apply the Boundary Conditions to the AcousticSystem equations. More...

void	WallBC (int bcRegion, int cnt, Array< OneD, Array< OneD, NekDouble > > &Fwd, Array< OneD, Array< OneD, NekDouble > > &physarray)
	Wall boundary conditions for the AcousticSystem equations. More...

void	WhiteNoiseBC (int bcRegion, int cnt, Array< OneD, Array< OneD, NekDouble > > &Fwd, Array< OneD, Array< OneD, NekDouble > > &BfFwd, Array< OneD, Array< OneD, NekDouble > > &physarray)
	Wall boundary conditions for the AcousticSystem equations. More...

void	CopyBoundaryTrace (const Array< OneD, NekDouble > &Fwd, Array< OneD, NekDouble > &Bwd)

void	UpdateBasefieldFwdBwd ()

Private Attributes
std::map< int, boost::mt19937 >	m_rng

NekDouble	m_whiteNoiseBC_lastUpdate

NekDouble	m_whiteNoiseBC_p

Friends
class	MemoryManager< AcousticSystem >

Additional Inherited Members
Static Public Attributes inherited from Nektar::SolverUtils::UnsteadySystem
static std::string	cmdSetStartTime

static std::string	cmdSetStartChkNum

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 []

static std::string	projectionTypeLookupIds []

Detailed Description

Definition at line 60 of file AcousticSystem.h.

Constructor & Destructor Documentation

◆ ~AcousticSystem()

Nektar::AcousticSystem::~AcousticSystem ( )

virtual

Destructor.

Destructor for AcousticSystem class.

Definition at line 120 of file AcousticSystem.cpp.

121{

122}

◆ AcousticSystem()

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

protected

Initialises UnsteadySystem class members.

Definition at line 57 of file AcousticSystem.cpp.

    : UnsteadySystem(pSession, pGraph), AdvectionSystem(pSession, pGraph),
      m_ip(-1), m_irho(-1), m_iu(1), m_conservative(false)
{
}

Member Function Documentation

◆ CopyBoundaryTrace()

void Nektar::AcousticSystem::CopyBoundaryTrace	(	const Array< OneD, NekDouble > &	Fwd,
		Array< OneD, NekDouble > &	Bwd
	)

private

Definition at line 631 of file AcousticSystem.cpp.

{
    int cnt = 0;
    // loop over Boundary Regions
    for (int bcRegion = 0; bcRegion < m_fields[0]->GetBndConditions().size();
         ++bcRegion)
    {
 
        // Copy the forward trace of the field to the backward trace
        int e, id2, npts;
 
        for (e = 0;
             e < m_fields[0]->GetBndCondExpansions()[bcRegion]->GetExpSize();
             ++e)
        {
            npts = m_fields[0]
                       ->GetBndCondExpansions()[bcRegion]
                       ->GetExp(e)
                       ->GetTotPoints();
            id2 = m_fields[0]->GetTrace()->GetPhys_Offset(
                m_fields[0]->GetTraceMap()->GetBndCondIDToGlobalTraceID(cnt +
                                                                        e));
 
            Vmath::Vcopy(npts, &Fwd[id2], 1, &Bwd[id2], 1);
        }
 
        cnt += m_fields[0]->GetBndCondExpansions()[bcRegion]->GetExpSize();
    }
}

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

Referenced by UpdateBasefieldFwdBwd().

◆ DoOdeProjection()

void Nektar::AcousticSystem::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 215 of file AcousticSystem.cpp.

{
    int nvariables = inarray.size();
    int nq         = m_fields[0]->GetNpoints();
 
    // deep copy
    if (inarray != outarray)
    {
        for (int i = 0; i < nvariables; ++i)
        {
            Vmath::Vcopy(nq, inarray[i], 1, outarray[i], 1);
        }
    }
 
    UpdateBasefieldFwdBwd();
 
    SetBoundaryConditions(outarray, time);
}

References Nektar::SolverUtils::EquationSystem::m_fields, SetBoundaryConditions(), UpdateBasefieldFwdBwd(), and Vmath::Vcopy().

Referenced by Nektar::APE::v_InitObject(), and Nektar::LEE::v_InitObject().

◆ DoOdeRhs()

void Nektar::AcousticSystem::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 186 of file AcousticSystem.cpp.

{
    int nVariables = inarray.size();
    int nq         = GetTotPoints();
 
    // WeakDG does not use advVel, so we only provide a dummy array
    Array<OneD, Array<OneD, NekDouble>> advVel(m_spacedim);
    m_advection->Advect(nVariables, m_fields, advVel, inarray, outarray, time);
 
    // Negate the LHS terms
    for (int i = 0; i < nVariables; ++i)
    {
        Vmath::Neg(nq, outarray[i], 1);
    }
 
    v_AddLinTerm(inarray, outarray);
 
    for (auto &x : m_forcing)
    {
        x->Apply(m_fields, inarray, outarray, m_time);
    }
}

References Nektar::SolverUtils::EquationSystem::GetTotPoints(), m_advection, Nektar::SolverUtils::EquationSystem::m_fields, m_forcing, Nektar::SolverUtils::EquationSystem::m_spacedim, Nektar::SolverUtils::EquationSystem::m_time, Vmath::Neg(), and v_AddLinTerm().

Referenced by Nektar::APE::v_InitObject(), and Nektar::LEE::v_InitObject().

◆ GetBasefieldFwdBwd()

const Array< OneD, const Array< OneD, NekDouble > > & Nektar::AcousticSystem::GetBasefieldFwdBwd ( )

protected

Get the baseflow field.

Definition at line 616 of file AcousticSystem.cpp.

{
    return m_bfFwdBwd;
}

References m_bfFwdBwd.

Referenced by SetBoundaryConditions(), Nektar::APE::v_InitObject(), and Nektar::LEE::v_InitObject().

◆ GetCFLEstimate()

NekDouble Nektar::AcousticSystem::GetCFLEstimate ( )

private

◆ GetNormals()

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

protected

Get the normal vectors.

Definition at line 598 of file AcousticSystem.cpp.

{
    return m_traceNormals;
}

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

Referenced by Nektar::APE::v_InitObject(), and Nektar::LEE::v_InitObject().

◆ GetVecLocs()

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

protected

Get the locations of the components of the directed fields within the fields array.

Definition at line 607 of file AcousticSystem.cpp.

{
    return m_vecLocs;
}

References m_vecLocs.

Referenced by Nektar::APE::v_InitObject(), and Nektar::LEE::v_InitObject().

◆ SetBoundaryConditions()

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

private

Apply the Boundary Conditions to the AcousticSystem equations.

Definition at line 239 of file AcousticSystem.cpp.

{
    std::string varName;
    int nvariables = m_fields.size();
    int cnt        = 0;
    int nTracePts  = GetTraceTotPoints();
 
    // Extract trace for boundaries. Needs to be done on all processors to avoid
    // deadlock.
    Array<OneD, Array<OneD, NekDouble>> Fwd(nvariables);
    for (int i = 0; i < nvariables; ++i)
    {
        Fwd[i] = Array<OneD, NekDouble>(nTracePts);
        m_fields[i]->ExtractTracePhys(inarray[i], Fwd[i]);
    }
    Array<OneD, Array<OneD, NekDouble>> bfFwd = GetBasefieldFwdBwd();
 
    // loop over Boundary Regions
    for (int n = 0; n < m_fields[0]->GetBndConditions().size(); ++n)
    {
        std::string userDefStr =
            m_fields[0]->GetBndConditions()[n]->GetUserDefined();
 
        if (!userDefStr.empty())
        {
            // Wall Boundary Condition
            if (boost::iequals(userDefStr, "Wall"))
            {
                WallBC(n, cnt, Fwd, inarray);
            }
            else if (boost::iequals(userDefStr, "WhiteNoise"))
            {
                WhiteNoiseBC(n, cnt, Fwd, bfFwd, inarray);
            }
            else if (boost::iequals(userDefStr, "RiemannInvariantBC"))
            {
                v_RiemannInvariantBC(n, cnt, Fwd, bfFwd, inarray);
            }
            else if (boost::iequals(userDefStr, "TimeDependent"))
            {
                for (int i = 0; i < nvariables; ++i)
                {
                    varName = m_session->GetVariable(i);
                    m_fields[i]->EvaluateBoundaryConditions(time, varName);
                }
            }
            else
            {
                string errmsg = "Unrecognised boundary condition: ";
                errmsg += userDefStr;
                ASSERTL0(false, errmsg.c_str());
            }
        }
        else
        {
            for (int i = 0; i < nvariables; ++i)
            {
                varName = m_session->GetVariable(i);
                m_fields[i]->EvaluateBoundaryConditions(time, varName);
            }
        }
 
        cnt += m_fields[0]->GetBndCondExpansions()[n]->GetExpSize();
    }
}

References ASSERTL0, GetBasefieldFwdBwd(), Nektar::SolverUtils::EquationSystem::GetTraceTotPoints(), Nektar::SolverUtils::EquationSystem::m_fields, Nektar::SolverUtils::EquationSystem::m_session, v_RiemannInvariantBC(), WallBC(), and WhiteNoiseBC().

Referenced by DoOdeProjection().

◆ UpdateBasefieldFwdBwd()

void Nektar::AcousticSystem::UpdateBasefieldFwdBwd ( )

private

Definition at line 621 of file AcousticSystem.cpp.

{
    for (int i = 0; i < m_bfNames.size(); i++)
    {
        int j = m_bfNames.size() + i;
        m_fields[0]->GetFwdBwdTracePhys(m_bf[i], m_bfFwdBwd[i], m_bfFwdBwd[j]);
        CopyBoundaryTrace(m_bfFwdBwd[i], m_bfFwdBwd[j]);
    }
}

References CopyBoundaryTrace(), m_bf, m_bfFwdBwd, m_bfNames, and Nektar::SolverUtils::EquationSystem::m_fields.

Referenced by DoOdeProjection().

◆ v_AddLinTerm()

virtual void Nektar::AcousticSystem::v_AddLinTerm	(	const Array< OneD, const Array< OneD, NekDouble > > &	inarray,
		Array< OneD, Array< OneD, NekDouble > > &	outarray
	)

inlineprotectedvirtual

Reimplemented in Nektar::LEE.

Definition at line 96 of file AcousticSystem.h.

    {
        boost::ignore_unused(inarray, outarray);
    }

Referenced by DoOdeRhs().

◆ v_ExtraFldOutput()

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

overrideprotectedvirtual

Reimplemented from Nektar::SolverUtils::EquationSystem.

Definition at line 568 of file AcousticSystem.cpp.

{
    for (int i = 0; i < m_bfNames.size(); i++)
    {
        variables.push_back(m_bfNames[i]);
        Array<OneD, NekDouble> tmpC(GetNcoeffs());
        m_fields[0]->FwdTrans(m_bf[i], tmpC);
        fieldcoeffs.push_back(tmpC);
    }
 
    int f = 0;
    for (auto &x : m_forcing)
    {
        for (int i = 0; i < x->GetForces().size(); ++i)
        {
            variables.push_back("F_" + boost::lexical_cast<string>(f) + "_" +
                                m_session->GetVariable(i));
            Array<OneD, NekDouble> tmpC(GetNcoeffs());
            m_fields[0]->FwdTrans(x->GetForces()[i], tmpC);
            fieldcoeffs.push_back(tmpC);
        }
        f++;
    }
}

References Nektar::SolverUtils::EquationSystem::GetNcoeffs(), m_bf, m_bfNames, Nektar::SolverUtils::EquationSystem::m_fields, m_forcing, and Nektar::SolverUtils::EquationSystem::m_session.

◆ v_GetFluxVector()

virtual void Nektar::AcousticSystem::v_GetFluxVector	(	const Array< OneD, Array< OneD, NekDouble > > &	physfield,
		Array< OneD, Array< OneD, Array< OneD, NekDouble > > > &	flux
	)

protectedpure virtual

Implemented in Nektar::APE, and Nektar::LEE.

◆ v_GetMaxStdVelocity()

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

overrideprotectedvirtual

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

Returns: Standard velocity field.

Reimplemented from Nektar::SolverUtils::AdvectionSystem.

Definition at line 475 of file AcousticSystem.cpp.

{
    boost::ignore_unused(SpeedSoundFactor);
    int nElm = m_fields[0]->GetExpSize();
 
    Array<OneD, NekDouble> stdV(nElm, 0.0);
 
    Array<OneD, Array<OneD, NekDouble>> stdVelocity(m_spacedim);
    Array<OneD, Array<OneD, NekDouble>> velocity(m_spacedim);
    LibUtilities::PointsKeyVector ptsKeys;
 
    int cnt = 0;
 
    for (int el = 0; el < nElm; ++el)
    {
        ptsKeys = m_fields[0]->GetExp(el)->GetPointsKeys();
 
        // Possible bug: not multiply by jacobian??
        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);
 
        int nq = m_fields[0]->GetExp(el)->GetTotPoints();
 
        for (int i = 0; i < m_spacedim; ++i)
        {
            stdVelocity[i] = Array<OneD, NekDouble>(nq, 0.0);
 
            velocity[i] = Array<OneD, NekDouble>(nq, 0.0);
            for (int j = 0; j < nq; ++j)
            {
                // The total advection velocity is v+c, so we need to scale c by
                // adding it before we do the transformation.
                NekDouble c    = sqrt(m_bf[0][cnt + j]);
                velocity[i][j] = m_bf[i + 2][cnt + j] + c;
            }
        }
 
        // scale the velocity components
        if (metricInfo->GetGtype() == SpatialDomains::eDeformed)
        {
            // d xi/ dx = gmat = 1/J * d x/d xi
            for (int i = 0; i < m_spacedim; ++i)
            {
                Vmath::Vmul(nq, gmat[i], 1, velocity[0], 1, stdVelocity[i], 1);
                for (int j = 1; j < m_spacedim; ++j)
                {
                    Vmath::Vvtvp(nq, gmat[m_spacedim * j + i], 1, velocity[j],
                                 1, stdVelocity[i], 1, stdVelocity[i], 1);
                }
            }
        }
        else
        {
            for (int i = 0; i < m_spacedim; ++i)
            {
                Vmath::Smul(nq, gmat[i][0], velocity[0], 1, stdVelocity[i], 1);
                for (int j = 1; j < m_spacedim; ++j)
                {
                    Vmath::Svtvp(nq, gmat[m_spacedim * j + i][0], velocity[j],
                                 1, stdVelocity[i], 1, stdVelocity[i], 1);
                }
            }
        }
 
        // compute the max absolute velocity of the element
        for (int i = 0; i < nq; ++i)
        {
            NekDouble pntVelocity = 0.0;
            for (int j = 0; j < m_spacedim; ++j)
            {
                pntVelocity += stdVelocity[j][i] * stdVelocity[j][i];
            }
            pntVelocity = sqrt(pntVelocity);
 
            if (pntVelocity > stdV[el])
            {
                stdV[el] = pntVelocity;
            }
        }
 
        cnt += nq;
    }
 
    return stdV;
}

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

◆ v_InitObject()

void Nektar::AcousticSystem::v_InitObject ( bool DeclareFields = true )

overrideprotectedvirtual

Initialization object for the AcousticSystem class.

Reimplemented from Nektar::SolverUtils::AdvectionSystem.

Reimplemented in Nektar::APE, and Nektar::LEE.

Definition at line 68 of file AcousticSystem.cpp.

{
    AdvectionSystem::v_InitObject(DeclareFields);
 
    ASSERTL0(
        m_projectionType == MultiRegions::eDiscontinuous,
        "Only Projection=DisContinuous supported by the AcousticSystem class.");
 
    m_bfNames.push_back("c0sq");
    m_bfNames.push_back("rho0");
    m_bfNames.push_back("u0");
    m_bfNames.push_back("v0");
    m_bfNames.push_back("w0");
 
    // Resize the advection velocities vector to dimension of the problem
    m_bfNames.resize(m_spacedim + 2);
 
    m_forcing = SolverUtils::Forcing::Load(m_session, shared_from_this(),
                                           m_fields, m_fields.size());
 
    // Do not forwards transform initial condition
    m_homoInitialFwd = false;
 
    // Set up locations of velocity and base velocity vectors.
    m_vecLocs    = Array<OneD, Array<OneD, NekDouble>>(1);
    m_vecLocs[0] = Array<OneD, NekDouble>(m_spacedim);
    for (int i = 0; i < m_spacedim; ++i)
    {
        // u', v', w'
        m_vecLocs[0][i] = m_iu + i;
    }
 
    if (m_session->DefinesElement("Nektar/Coupling"))
    {
        TiXmlElement *vCoupling = m_session->GetElement("Nektar/Coupling");
 
        ASSERTL0(vCoupling->Attribute("TYPE"),
                 "Missing TYPE attribute in Coupling");
        string vType = vCoupling->Attribute("TYPE");
        ASSERTL0(!vType.empty(),
                 "TYPE attribute must be non-empty in Coupling");
 
        m_coupling = GetCouplingFactory().CreateInstance(vType, m_fields[0]);
    }
 
    m_whiteNoiseBC_lastUpdate = -1.0;
    m_whiteNoiseBC_p          = 0.0;
}

References ASSERTL0, Nektar::MultiRegions::eDiscontinuous, Nektar::SolverUtils::GetCouplingFactory(), Nektar::SolverUtils::Forcing::Load(), m_bfNames, m_coupling, Nektar::SolverUtils::EquationSystem::m_fields, m_forcing, Nektar::SolverUtils::UnsteadySystem::m_homoInitialFwd, m_iu, Nektar::SolverUtils::EquationSystem::m_projectionType, Nektar::SolverUtils::EquationSystem::m_session, Nektar::SolverUtils::EquationSystem::m_spacedim, m_vecLocs, m_whiteNoiseBC_lastUpdate, m_whiteNoiseBC_p, and Nektar::SolverUtils::AdvectionSystem::v_InitObject().

Referenced by Nektar::APE::v_InitObject(), and Nektar::LEE::v_InitObject().

◆ v_Output()

void Nektar::AcousticSystem::v_Output ( void )

overrideprotectedvirtual

Write the field data to file. The file is named according to the session name with the extension .fld appended.

Reimplemented from Nektar::SolverUtils::EquationSystem.

Definition at line 173 of file AcousticSystem.cpp.

{
    if (m_coupling)
    {
        m_coupling->Finalize();
    }
 
    AdvectionSystem::v_Output();
}

References m_coupling, and Nektar::SolverUtils::EquationSystem::v_Output().

◆ v_PreIntegrate()

bool Nektar::AcousticSystem::v_PreIntegrate ( int step )

overrideprotectedvirtual

v_PreIntegrate

Reimplemented from Nektar::SolverUtils::UnsteadySystem.

Definition at line 127 of file AcousticSystem.cpp.

{
    GetFunction("Baseflow", m_fields[0], true)
        ->Evaluate(m_bfNames, m_bf, m_time);
 
    if (m_coupling)
    {
        int numForceFields = 0;
        for (auto &x : m_forcing)
        {
            numForceFields += x->GetForces().size();
        }
        vector<string> varNames;
        Array<OneD, Array<OneD, NekDouble>> phys(
            m_fields.size() + m_bfNames.size() + numForceFields);
        for (int i = 0; i < m_fields.size(); ++i)
        {
            varNames.push_back(m_session->GetVariable(i));
            phys[i] = m_fields[i]->UpdatePhys();
        }
        for (int i = 0; i < m_bfNames.size(); ++i)
        {
            varNames.push_back(m_bfNames[i]);
            phys[m_fields.size() + i] = m_bf[i];
        }
 
        int f = 0;
        for (auto &x : m_forcing)
        {
            for (int i = 0; i < x->GetForces().size(); ++i)
            {
                phys[m_fields.size() + m_bfNames.size() + f + i] =
                    x->GetForces()[i];
                varNames.push_back("F_" + boost::lexical_cast<string>(f) + "_" +
                                   m_session->GetVariable(i));
            }
            f++;
        }
 
        m_coupling->Send(step, m_time, phys, varNames);
        m_coupling->Receive(step, m_time, phys, varNames);
    }
 
    return AdvectionSystem::v_PreIntegrate(step);
}

References Nektar::SolverUtils::EquationSystem::GetFunction(), m_bf, m_bfNames, m_coupling, Nektar::SolverUtils::EquationSystem::m_fields, m_forcing, Nektar::SolverUtils::EquationSystem::m_session, Nektar::SolverUtils::EquationSystem::m_time, and Nektar::SolverUtils::UnsteadySystem::v_PreIntegrate().

◆ v_RiemannInvariantBC()

virtual void Nektar::AcousticSystem::v_RiemannInvariantBC	(	int	bcRegion,
		int	cnt,
		Array< OneD, Array< OneD, NekDouble > > &	Fwd,
		Array< OneD, Array< OneD, NekDouble > > &	BfFwd,
		Array< OneD, Array< OneD, NekDouble > > &	physarray
	)

protectedpure virtual

Implemented in Nektar::APE, and Nektar::LEE.

Referenced by SetBoundaryConditions().

◆ WallBC()

void Nektar::AcousticSystem::WallBC	(	int	bcRegion,
		int	cnt,
		Array< OneD, Array< OneD, NekDouble > > &	Fwd,
		Array< OneD, Array< OneD, NekDouble > > &	physarray
	)

private

Wall boundary conditions for the AcousticSystem equations.

Definition at line 309 of file AcousticSystem.cpp.

{
    int nVariables = physarray.size();
 
    const Array<OneD, const int> &traceBndMap = m_fields[0]->GetTraceBndMap();
 
    // Adjust the physical values of the trace to take
    // user defined boundaries into account
    int id1, id2, nBCEdgePts;
    int eMax = m_fields[0]->GetBndCondExpansions()[bcRegion]->GetExpSize();
 
    for (int e = 0; e < eMax; ++e)
    {
        nBCEdgePts = m_fields[0]
                         ->GetBndCondExpansions()[bcRegion]
                         ->GetExp(e)
                         ->GetTotPoints();
        id1 = m_fields[0]->GetBndCondExpansions()[bcRegion]->GetPhys_Offset(e);
        id2 = m_fields[0]->GetTrace()->GetPhys_Offset(traceBndMap[cnt + e]);
 
        // For 2D/3D, define: v* = v - 2(v.n)n
        Array<OneD, NekDouble> tmp(nBCEdgePts, 0.0);
 
        // Calculate (v.n)
        for (int i = 0; i < m_spacedim; ++i)
        {
            Vmath::Vvtvp(nBCEdgePts, &Fwd[m_iu + i][id2], 1,
                         &m_traceNormals[i][id2], 1, &tmp[0], 1, &tmp[0], 1);
        }
 
        // Calculate 2.0(v.n)
        Vmath::Smul(nBCEdgePts, -2.0, &tmp[0], 1, &tmp[0], 1);
 
        // Calculate v* = v - 2.0(v.n)n
        for (int i = 0; i < m_spacedim; ++i)
        {
            Vmath::Vvtvp(nBCEdgePts, &tmp[0], 1, &m_traceNormals[i][id2], 1,
                         &Fwd[m_iu + i][id2], 1, &Fwd[m_iu + i][id2], 1);
        }
 
        // Copy boundary adjusted values into the boundary expansion
        for (int i = 0; i < nVariables; ++i)
        {
            Vmath::Vcopy(nBCEdgePts, &Fwd[i][id2], 1,
                         &(m_fields[i]
                               ->GetBndCondExpansions()[bcRegion]
                               ->UpdatePhys())[id1],
                         1);
        }
    }
}

References Nektar::SolverUtils::EquationSystem::m_fields, m_iu, Nektar::SolverUtils::EquationSystem::m_spacedim, Nektar::SolverUtils::EquationSystem::m_traceNormals, Vmath::Smul(), Vmath::Vcopy(), and Vmath::Vvtvp().

Referenced by SetBoundaryConditions().

◆ WhiteNoiseBC()

void Nektar::AcousticSystem::WhiteNoiseBC	(	int	bcRegion,
		int	cnt,
		Array< OneD, Array< OneD, NekDouble > > &	Fwd,
		Array< OneD, Array< OneD, NekDouble > > &	BfFwd,
		Array< OneD, Array< OneD, NekDouble > > &	physarray
	)

private

Wall boundary conditions for the AcousticSystem equations.

Definition at line 366 of file AcousticSystem.cpp.

{
    boost::ignore_unused(Fwd);
 
    int id1, id2, nBCEdgePts;
    int nVariables = physarray.size();
 
    const Array<OneD, const int> &traceBndMap = m_fields[0]->GetTraceBndMap();
 
    if (m_rng.count(bcRegion) == 0)
    {
        m_rng[bcRegion] = boost::mt19937(bcRegion);
    }
 
    ASSERTL0(
        m_fields[0]->GetBndConditions()[bcRegion]->GetBoundaryConditionType() ==
            SpatialDomains::eDirichlet,
        "WhiteNoise BCs must be Dirichlet type BCs");
 
    LibUtilities::Equation cond =
        std::static_pointer_cast<SpatialDomains::DirichletBoundaryCondition>(
            m_fields[0]->GetBndConditions()[bcRegion])
            ->m_dirichletCondition;
    NekDouble sigma = cond.Evaluate();
 
    ASSERTL0(sigma > NekConstants::kNekZeroTol,
             "sigma must be greater than zero");
 
    // random velocity perturbation
    if (m_whiteNoiseBC_lastUpdate < m_time)
    {
        m_whiteNoiseBC_lastUpdate = m_time;
 
        boost::normal_distribution<> dist(0, sigma);
        m_whiteNoiseBC_p = dist(m_rng[bcRegion]);
    }
 
    int eMax = m_fields[0]->GetBndCondExpansions()[bcRegion]->GetExpSize();
    for (int e = 0; e < eMax; ++e)
    {
        nBCEdgePts = m_fields[0]
                         ->GetBndCondExpansions()[bcRegion]
                         ->GetExp(e)
                         ->GetTotPoints();
        id1 = m_fields[0]->GetBndCondExpansions()[bcRegion]->GetPhys_Offset(e);
        id2 = m_fields[0]->GetTrace()->GetPhys_Offset(traceBndMap[cnt + e]);
 
        Array<OneD, Array<OneD, NekDouble>> tmp(nVariables);
        for (int i = 0; i < nVariables; ++i)
        {
            tmp[i] = Array<OneD, NekDouble>(nBCEdgePts, 0.0);
        }
 
        // pressure perturbation
        Vmath::Fill(nBCEdgePts, m_whiteNoiseBC_p, &tmp[m_ip][0], 1);
 
        if (m_conservative)
        {
            for (int i = 0; i < nBCEdgePts; ++i)
            {
                // density perturbation
                tmp[m_irho][i] = m_whiteNoiseBC_p *
                                 BfFwd[m_spacedim + 2][id2 + i] /
                                 BfFwd[0][id2 + i];
 
                // velocity perturbation
                NekDouble ru = m_whiteNoiseBC_p / sqrt(BfFwd[0][id2 + i]);
                for (int j = 0; j < m_spacedim; ++j)
                {
                    tmp[m_iu + j][i] = -1.0 * ru * m_traceNormals[j][id2 + i];
                }
            }
        }
        else
        {
            for (int i = 0; i < nBCEdgePts; ++i)
            {
                // velocity perturbation
                NekDouble u = m_whiteNoiseBC_p /
                              (sqrt(BfFwd[0][id2 + i]) * BfFwd[1][id2 + i]);
 
                for (int j = 0; j < m_spacedim; ++j)
                {
                    tmp[m_iu + j][i] = -1.0 * u * m_traceNormals[j][id2 + i];
                }
            }
        }
 
        // Copy boundary adjusted values into the boundary expansion
        for (int i = 0; i < nVariables; ++i)
        {
            Vmath::Vcopy(nBCEdgePts, &tmp[i][0], 1,
                         &(m_fields[i]
                               ->GetBndCondExpansions()[bcRegion]
                               ->UpdatePhys())[id1],
                         1);
        }
    }
}

References ASSERTL0, Nektar::SpatialDomains::eDirichlet, Nektar::LibUtilities::Equation::Evaluate(), Vmath::Fill(), Nektar::NekConstants::kNekZeroTol, m_conservative, Nektar::SolverUtils::EquationSystem::m_fields, m_ip, m_irho, m_iu, m_rng, Nektar::SolverUtils::EquationSystem::m_spacedim, Nektar::SolverUtils::EquationSystem::m_time, Nektar::SolverUtils::EquationSystem::m_traceNormals, m_whiteNoiseBC_lastUpdate, m_whiteNoiseBC_p, tinysimd::sqrt(), and Vmath::Vcopy().

Referenced by SetBoundaryConditions().

Friends And Related Function Documentation

◆ MemoryManager< AcousticSystem >

friend class MemoryManager< AcousticSystem >

friend

Definition at line 1 of file AcousticSystem.h.

Member Data Documentation

◆ m_advection

SolverUtils::AdvectionSharedPtr Nektar::AcousticSystem::m_advection

protected

Definition at line 74 of file AcousticSystem.h.

Referenced by DoOdeRhs(), Nektar::APE::v_InitObject(), and Nektar::LEE::v_InitObject().

◆ m_bf

Array<OneD, Array<OneD, NekDouble> > Nektar::AcousticSystem::m_bf

protected

Definition at line 79 of file AcousticSystem.h.

Referenced by UpdateBasefieldFwdBwd(), Nektar::LEE::v_AddLinTerm(), v_ExtraFldOutput(), Nektar::APE::v_GetFluxVector(), Nektar::LEE::v_GetFluxVector(), v_GetMaxStdVelocity(), Nektar::APE::v_InitObject(), Nektar::LEE::v_InitObject(), and v_PreIntegrate().

◆ m_bfFwdBwd

Array<OneD, Array<OneD, NekDouble> > Nektar::AcousticSystem::m_bfFwdBwd

protected

Definition at line 77 of file AcousticSystem.h.

Referenced by GetBasefieldFwdBwd(), UpdateBasefieldFwdBwd(), Nektar::APE::v_InitObject(), and Nektar::LEE::v_InitObject().

◆ m_bfNames

std::vector<std::string> Nektar::AcousticSystem::m_bfNames

protected

Definition at line 80 of file AcousticSystem.h.

Referenced by UpdateBasefieldFwdBwd(), v_ExtraFldOutput(), v_InitObject(), Nektar::APE::v_InitObject(), Nektar::LEE::v_InitObject(), and v_PreIntegrate().

◆ m_conservative

bool Nektar::AcousticSystem::m_conservative

protected

we are dealing with a conservative formualtion

Definition at line 72 of file AcousticSystem.h.

Referenced by Nektar::APE::APE(), Nektar::LEE::LEE(), and WhiteNoiseBC().

◆ m_coupling

SolverUtils::CouplingSharedPtr Nektar::AcousticSystem::m_coupling

protected

Definition at line 73 of file AcousticSystem.h.

Referenced by v_InitObject(), v_Output(), and v_PreIntegrate().

◆ m_forcing

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

protected

Definition at line 75 of file AcousticSystem.h.

Referenced by DoOdeRhs(), v_ExtraFldOutput(), v_InitObject(), and v_PreIntegrate().

◆ m_ip

int Nektar::AcousticSystem::m_ip

protected

indices of the fields

Definition at line 70 of file AcousticSystem.h.

Referenced by Nektar::APE::APE(), Nektar::LEE::LEE(), Nektar::LEE::v_AddLinTerm(), Nektar::LEE::v_GetFluxVector(), Nektar::APE::v_RiemannInvariantBC(), Nektar::LEE::v_RiemannInvariantBC(), and WhiteNoiseBC().

◆ m_irho

int Nektar::AcousticSystem::m_irho

protected

Definition at line 70 of file AcousticSystem.h.

Referenced by Nektar::APE::APE(), Nektar::LEE::LEE(), Nektar::LEE::v_GetFluxVector(), Nektar::LEE::v_RiemannInvariantBC(), and WhiteNoiseBC().

◆ m_iu

int Nektar::AcousticSystem::m_iu

protected

Definition at line 70 of file AcousticSystem.h.

Referenced by Nektar::APE::APE(), Nektar::LEE::LEE(), Nektar::LEE::v_AddLinTerm(), Nektar::LEE::v_GetFluxVector(), v_InitObject(), Nektar::APE::v_RiemannInvariantBC(), Nektar::LEE::v_RiemannInvariantBC(), WallBC(), and WhiteNoiseBC().

◆ m_riemannSolver

SolverUtils::RiemannSolverSharedPtr Nektar::AcousticSystem::m_riemannSolver

protected

Definition at line 76 of file AcousticSystem.h.

Referenced by Nektar::APE::v_InitObject(), and Nektar::LEE::v_InitObject().

◆ m_rng

std::map<int, boost::mt19937> Nektar::AcousticSystem::m_rng

private

Definition at line 130 of file AcousticSystem.h.

Referenced by WhiteNoiseBC().

◆ m_vecLocs

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

protected

Definition at line 78 of file AcousticSystem.h.

Referenced by GetVecLocs(), and v_InitObject().

◆ m_whiteNoiseBC_lastUpdate

NekDouble Nektar::AcousticSystem::m_whiteNoiseBC_lastUpdate

private

Definition at line 131 of file AcousticSystem.h.

Referenced by v_InitObject(), and WhiteNoiseBC().

◆ m_whiteNoiseBC_p

NekDouble Nektar::AcousticSystem::m_whiteNoiseBC_p

private

Definition at line 132 of file AcousticSystem.h.

Referenced by v_InitObject(), and WhiteNoiseBC().

Public Member Functions

Protected Member Functions

Protected Attributes

Private Member Functions

Private Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ~AcousticSystem()

◆ AcousticSystem()

Member Function Documentation

◆ CopyBoundaryTrace()

◆ DoOdeProjection()

◆ DoOdeRhs()

◆ GetBasefieldFwdBwd()

◆ GetCFLEstimate()

◆ GetNormals()

◆ GetVecLocs()

◆ SetBoundaryConditions()

◆ UpdateBasefieldFwdBwd()

◆ v_AddLinTerm()

◆ v_ExtraFldOutput()

◆ v_GetFluxVector()

◆ v_GetMaxStdVelocity()

◆ v_InitObject()

◆ v_Output()

◆ v_PreIntegrate()

◆ v_RiemannInvariantBC()

◆ WallBC()

◆ WhiteNoiseBC()

Friends And Related Function Documentation

◆ MemoryManager< AcousticSystem >

Member Data Documentation

◆ m_advection

◆ m_bf

◆ m_bfFwdBwd

◆ m_bfNames

◆ m_conservative

◆ m_coupling

◆ m_forcing

◆ m_ip

◆ m_irho

◆ m_iu

◆ m_riemannSolver

◆ m_rng

◆ m_vecLocs

◆ m_whiteNoiseBC_lastUpdate

◆ m_whiteNoiseBC_p