#include <CFLtester.h>

Inheritance diagram for Nektar::CFLtester:

Collaboration diagram for Nektar::CFLtester:

Public Member Functions
virtual	~CFLtester ()
Public Member Functions inherited from Nektar::SolverUtils::UnsteadySystem
virtual SOLVER_UTILS_EXPORT	~UnsteadySystem ()
	Destructor.
SOLVER_UTILS_EXPORT NekDouble	GetTimeStep (const Array< OneD, const Array< OneD, NekDouble > > &inarray)
	Calculate the larger time-step mantaining the problem stable.
Public Member Functions inherited from Nektar::SolverUtils::EquationSystem
virtual SOLVER_UTILS_EXPORT	~EquationSystem ()
	Destructor.
SOLVER_UTILS_EXPORT void	SetUpTraceNormals (void)
SOLVER_UTILS_EXPORT void	InitObject ()
	Initialises the members of this object.
SOLVER_UTILS_EXPORT void	DoInitialise ()
	Perform any initialisation necessary before solving the problem.
SOLVER_UTILS_EXPORT void	DoSolve ()
	Solve the problem.
SOLVER_UTILS_EXPORT void	TransCoeffToPhys ()
	Transform from coefficient to physical space.
SOLVER_UTILS_EXPORT void	TransPhysToCoeff ()
	Transform from physical to coefficient space.
SOLVER_UTILS_EXPORT void	Output ()
	Perform output operations after solve.
SOLVER_UTILS_EXPORT NekDouble	LinfError (unsigned int field, const Array< OneD, NekDouble > &exactsoln=NullNekDouble1DArray)
	Linf error computation.
SOLVER_UTILS_EXPORT std::string	GetSessionName ()
	Get Session name.
template<class T >
boost::shared_ptr< T >	as ()
SOLVER_UTILS_EXPORT void	ResetSessionName (std::string newname)
	Reset Session name.
SOLVER_UTILS_EXPORT LibUtilities::SessionReaderSharedPtr	GetSession ()
	Get Session name.
SOLVER_UTILS_EXPORT MultiRegions::ExpListSharedPtr	GetPressure ()
	Get pressure field if available.
SOLVER_UTILS_EXPORT void	PrintSummary (std::ostream &out)
	Print a summary of parameters and solver characteristics.
SOLVER_UTILS_EXPORT void	SetLambda (NekDouble lambda)
	Set parameter m_lambda.
SOLVER_UTILS_EXPORT void	EvaluateFunction (Array< OneD, Array< OneD, NekDouble > > &pArray, std::string pFunctionName, const NekDouble pTime=0.0, const int domain=0)
	Evaluates a function as specified in the session file.
SOLVER_UTILS_EXPORT void	EvaluateFunction (std::vector< std::string > pFieldNames, Array< OneD, Array< OneD, NekDouble > > &pFields, const std::string &pName, const int domain=0)
	Populate given fields with the function from session.
SOLVER_UTILS_EXPORT void	EvaluateFunction (std::vector< std::string > pFieldNames, Array< OneD, MultiRegions::ExpListSharedPtr > &pFields, const std::string &pName, const int domain=0)
	Populate given fields with the function from session.
SOLVER_UTILS_EXPORT void	EvaluateFunction (std::string pFieldName, Array< OneD, NekDouble > &pArray, const std::string &pFunctionName, const NekDouble &pTime=0.0, const int domain=0)
SOLVER_UTILS_EXPORT std::string	DescribeFunction (std::string pFieldName, const std::string &pFunctionName, const int domain)
	Provide a description of a function for a given field name.
SOLVER_UTILS_EXPORT void	InitialiseBaseFlow (Array< OneD, Array< OneD, NekDouble > > &base)
	Perform initialisation of the base flow.
SOLVER_UTILS_EXPORT void	SetInitialConditions (NekDouble initialtime=0.0, bool dumpInitialConditions=true, const int domain=0)
	Initialise the data in the dependent fields.
SOLVER_UTILS_EXPORT void	EvaluateExactSolution (int field, Array< OneD, NekDouble > &outfield, const NekDouble time)
	Evaluates an exact solution.
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.
SOLVER_UTILS_EXPORT NekDouble	L2Error (unsigned int field, bool Normalised=false)
	Compute the L2 error of the fields.
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].
SOLVER_UTILS_EXPORT void	WeakAdvectionGreensDivergenceForm (const Array< OneD, Array< OneD, NekDouble > > &F, Array< OneD, NekDouble > &outarray)
	Compute the inner product $(\nabla \phi \cdot F)$ .
SOLVER_UTILS_EXPORT void	WeakAdvectionDivergenceForm (const Array< OneD, Array< OneD, NekDouble > > &F, Array< OneD, NekDouble > &outarray)
	Compute the inner product $(\phi, \nabla \cdot F)$ .
SOLVER_UTILS_EXPORT void	WeakAdvectionNonConservativeForm (const Array< OneD, Array< OneD, NekDouble > > &V, const Array< OneD, const NekDouble > &u, Array< OneD, NekDouble > &outarray, bool UseContCoeffs=false)
	Compute the inner product $(\phi, V\cdot \nabla u)$ .
f SOLVER_UTILS_EXPORT void	AdvectionNonConservativeForm (const Array< OneD, Array< OneD, NekDouble > > &V, const Array< OneD, const NekDouble > &u, Array< OneD, NekDouble > &outarray, Array< OneD, NekDouble > &wk=NullNekDouble1DArray)
	Compute the non-conservative advection.
SOLVER_UTILS_EXPORT void	WeakDGAdvection (const Array< OneD, Array< OneD, NekDouble > > &InField, Array< OneD, Array< OneD, NekDouble > > &OutField, bool NumericalFluxIncludesNormal=true, bool InFieldIsInPhysSpace=false, int nvariables=0)
	Calculate the weak discontinuous Galerkin advection.
SOLVER_UTILS_EXPORT void	WeakDGDiffusion (const Array< OneD, Array< OneD, NekDouble > > &InField, Array< OneD, Array< OneD, NekDouble > > &OutField, bool NumericalFluxIncludesNormal=true, bool InFieldIsInPhysSpace=false)
	Calculate weak DG Diffusion in the LDG form.
SOLVER_UTILS_EXPORT void	Checkpoint_Output (const int n)
	Write checkpoint file of m_fields.
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.
SOLVER_UTILS_EXPORT void	Checkpoint_BaseFlow (const int n)
	Write base flow file of m_fields.
SOLVER_UTILS_EXPORT void	WriteFld (const std::string &outname)
	Write field data to the given filename.
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.
SOLVER_UTILS_EXPORT void	ImportFld (const std::string &infile, Array< OneD, MultiRegions::ExpListSharedPtr > &pFields)
	Input field data from the given file.
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.
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.
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.
SOLVER_UTILS_EXPORT void	ScanForHistoryPoints ()
	Builds map of which element holds each history point.
SOLVER_UTILS_EXPORT void	WriteHistoryData (std::ostream &out)
	Probe each history point and write to file.
SOLVER_UTILS_EXPORT void	SessionSummary (SummaryList &vSummary)
	Write out a session summary.
SOLVER_UTILS_EXPORT Array < OneD, MultiRegions::ExpListSharedPtr > &	UpdateFields ()
SOLVER_UTILS_EXPORT LibUtilities::FieldMetaDataMap &	UpdateFieldMetaDataMap ()
	Get hold of FieldInfoMap so it can be updated.
SOLVER_UTILS_EXPORT NekDouble	GetFinalTime ()
	Return final time.
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	GetNumElmVelocity ()
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	SetStepsToOne ()
SOLVER_UTILS_EXPORT void	ZeroPhysFields ()
SOLVER_UTILS_EXPORT void	FwdTransFields ()
SOLVER_UTILS_EXPORT void	GetFluxVector (const int i, Array< OneD, Array< OneD, NekDouble > > &physfield, Array< OneD, Array< OneD, NekDouble > > &flux)
SOLVER_UTILS_EXPORT void	GetFluxVector (const int i, Array< OneD, Array< OneD, NekDouble > > &physfield, Array< OneD, Array< OneD, NekDouble > > &fluxX, Array< OneD, Array< OneD, NekDouble > > &fluxY)
SOLVER_UTILS_EXPORT void	GetFluxVector (const int i, const int j, Array< OneD, Array< OneD, NekDouble > > &physfield, Array< OneD, Array< OneD, NekDouble > > &flux)
SOLVER_UTILS_EXPORT void	NumericalFlux (Array< OneD, Array< OneD, NekDouble > > &physfield, Array< OneD, Array< OneD, NekDouble > > &numflux)
SOLVER_UTILS_EXPORT void	NumericalFlux (Array< OneD, Array< OneD, NekDouble > > &physfield, Array< OneD, Array< OneD, NekDouble > > &numfluxX, Array< OneD, Array< OneD, NekDouble > > &numfluxY)
SOLVER_UTILS_EXPORT void	NumFluxforScalar (const Array< OneD, Array< OneD, NekDouble > > &ufield, Array< OneD, Array< OneD, Array< OneD, NekDouble > > > &uflux)
SOLVER_UTILS_EXPORT void	NumFluxforVector (const Array< OneD, Array< OneD, NekDouble > > &ufield, Array< OneD, Array< OneD, Array< OneD, NekDouble > > > &qfield, Array< OneD, Array< OneD, NekDouble > > &qflux)
SOLVER_UTILS_EXPORT void	SetModifiedBasis (const bool modbasis)
SOLVER_UTILS_EXPORT int	NoCaseStringCompare (const string &s1, const string &s2)
	Perform a case-insensitive string comparison.

Static Public Member Functions
static EquationSystemSharedPtr	create (const LibUtilities::SessionReaderSharedPtr &pSession)

Static Public Attributes
static std::string	className = GetEquationSystemFactory().RegisterCreatorFunction("CFLtester", CFLtester::create, "Testing CFL restriction")

Protected Member Functions
	CFLtester (const LibUtilities::SessionReaderSharedPtr &pSession)
void	DoOdeRhs (const Array< OneD, const Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &outarray, const NekDouble time)
void	DoOdeProjection (const Array< OneD, const Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &outarray, const NekDouble time)
virtual void	v_InitObject ()
	Init object for UnsteadySystem class.
virtual void	v_GetFluxVector (const int i, Array< OneD, Array< OneD, NekDouble > > &physfield, Array< OneD, Array< OneD, NekDouble > > &flux)
virtual void	v_NumericalFlux (Array< OneD, Array< OneD, NekDouble > > &physfield, Array< OneD, Array< OneD, NekDouble > > &numflux)
virtual void	v_GenerateSummary (SummaryList &s)
	Print a summary of time stepping parameters.
Protected Member Functions inherited from Nektar::SolverUtils::UnsteadySystem
SOLVER_UTILS_EXPORT	UnsteadySystem (const LibUtilities::SessionReaderSharedPtr &pSession)
	Initialises UnsteadySystem class members.
SOLVER_UTILS_EXPORT NekDouble	MaxTimeStepEstimator ()
	Get the maximum timestep estimator for cfl control.
virtual SOLVER_UTILS_EXPORT void	v_DoSolve ()
	Solves an unsteady problem.
virtual SOLVER_UTILS_EXPORT void	v_DoInitialise ()
	Sets up initial conditions.
virtual SOLVER_UTILS_EXPORT void	v_AppendOutput1D (Array< OneD, Array< OneD, NekDouble > > &solution1D)
	Print the solution at each solution point in a txt file.
virtual SOLVER_UTILS_EXPORT void	v_NumericalFlux (Array< OneD, Array< OneD, NekDouble > > &physfield, Array< OneD, Array< OneD, NekDouble > > &numfluxX, Array< OneD, Array< OneD, NekDouble > > &numfluxY)
virtual SOLVER_UTILS_EXPORT void	v_NumFluxforScalar (const Array< OneD, Array< OneD, NekDouble > > &ufield, Array< OneD, Array< OneD, Array< OneD, NekDouble > > > &uflux)
virtual SOLVER_UTILS_EXPORT void	v_NumFluxforVector (const Array< OneD, Array< OneD, NekDouble > > &ufield, Array< OneD, Array< OneD, Array< OneD, NekDouble > > > &qfield, Array< OneD, Array< OneD, NekDouble > > &qflux)
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.
virtual SOLVER_UTILS_EXPORT bool	v_PreIntegrate (int step)
virtual SOLVER_UTILS_EXPORT bool	v_PostIntegrate (int step)
SOLVER_UTILS_EXPORT void	CheckForRestartTime (NekDouble &time)
Protected Member Functions inherited from Nektar::SolverUtils::EquationSystem
SOLVER_UTILS_EXPORT	EquationSystem (const LibUtilities::SessionReaderSharedPtr &pSession)
	Initialises EquationSystem class members.
int	nocase_cmp (const string &s1, const string &s2)
SOLVER_UTILS_EXPORT void	SetBoundaryConditions (NekDouble time)
	Evaluates the boundary conditions at the given time.
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.
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.
virtual SOLVER_UTILS_EXPORT void	v_TransCoeffToPhys ()
	Virtual function for transformation to physical space.
virtual SOLVER_UTILS_EXPORT void	v_TransPhysToCoeff ()
	Virtual function for transformation to coefficient space.
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)
SOLVER_UTILS_EXPORT void	SetUpBaseFields (SpatialDomains::MeshGraphSharedPtr &mesh)
SOLVER_UTILS_EXPORT void	ImportFldBase (std::string pInfile, SpatialDomains::MeshGraphSharedPtr pGraph)
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
Array< OneD, Array< OneD, NekDouble > >	m_velocity
Protected Attributes inherited from Nektar::SolverUtils::UnsteadySystem
int	m_infosteps
	Number of time steps between outputting status information.
LibUtilities::TimeIntegrationWrapperSharedPtr	m_intScheme
	Wrapper to the time integration scheme.
LibUtilities::TimeIntegrationSchemeOperators	m_ode
	The time integration scheme operators to use.
LibUtilities::TimeIntegrationSolutionSharedPtr	m_intSoln
NekDouble	m_epsilon
bool	m_explicitDiffusion
	Indicates if explicit or implicit treatment of diffusion is used.
bool	m_explicitAdvection
	Indicates if explicit or implicit treatment of advection is used.
bool	m_explicitReaction
	Indicates if explicit or implicit treatment of reaction is used.
bool	m_homoInitialFwd
	Flag to determine if simulation should start in homogeneous forward transformed state.
std::vector< int >	m_intVariables
std::vector< FilterSharedPtr >	m_filters
Protected Attributes inherited from Nektar::SolverUtils::EquationSystem
LibUtilities::CommSharedPtr	m_comm
	Communicator.
LibUtilities::SessionReaderSharedPtr	m_session
	The session reader.
LibUtilities::FieldIOSharedPtr	m_fld
	Field input/output.
Array< OneD, MultiRegions::ExpListSharedPtr >	m_fields
	Array holding all dependent variables.
Array< OneD, MultiRegions::ExpListSharedPtr >	m_base
	Base fields.
Array< OneD, MultiRegions::ExpListSharedPtr >	m_derivedfields
	Array holding all dependent variables.
SpatialDomains::BoundaryConditionsSharedPtr	m_boundaryConditions
	Pointer to boundary conditions object.
SpatialDomains::MeshGraphSharedPtr	m_graph
	Pointer to graph defining mesh.
std::string	m_sessionName
	Name of the session.
NekDouble	m_time
	Current time of simulation.
NekDouble	m_fintime
	Finish time of the simulation.
NekDouble	m_timestep
	Time step size.
NekDouble	m_lambda
	Lambda constant in real system if one required.
NekDouble	m_checktime
	Time between checkpoints.
int	m_steps
	Number of steps to take.
int	m_checksteps
	Number of steps between checkpoints.
int	m_spacedim
	Spatial dimension (>= expansion dim).
int	m_expdim
	Expansion dimension.
bool	m_SingleMode
	Flag to determine if single homogeneous mode is used.
bool	m_HalfMode
	Flag to determine if half homogeneous mode is used.
bool	m_MultipleModes
	Flag to determine if use multiple homogenenous modes are used.
bool	m_useFFT
	Flag to determine if FFT is used for homogeneous transform.
bool	m_homogen_dealiasing
	Flag to determine if dealiasing is used for homogeneous simulations.
bool	m_specHP_dealiasing
	Flag to determine if dealisising is usde for the Spectral/hp element discretisation.
enum MultiRegions::ProjectionType	m_projectionType
	Type of projection; e.g continuous or discontinuous.
Array< OneD, Array< OneD, NekDouble > >	m_traceNormals
	Array holding trace normals for DG simulations in the forwards direction.
Array< OneD, Array< OneD, Array< OneD, NekDouble > > >	m_gradtan
	1 x nvariable x nq
Array< OneD, Array< OneD, Array< OneD, NekDouble > > >	m_tanbasis
	2 x m_spacedim x nq
Array< OneD, bool >	m_checkIfSystemSingular
	Flag to indicate if the fields should be checked for singularity.
LibUtilities::FieldMetaDataMap	m_fieldMetaDataMap
	Map to identify relevant solver info to dump in output fields.
int	m_NumQuadPointsError
	Number of Quadrature points used to work out the error.
enum HomogeneousType	m_HomogeneousType
NekDouble	m_LhomX
	physical length in X direction (if homogeneous)
NekDouble	m_LhomY
	physical length in Y direction (if homogeneous)
NekDouble	m_LhomZ
	physical length in Z direction (if homogeneous)
int	m_npointsX
	number of points in X direction (if homogeneous)
int	m_npointsY
	number of points in Y direction (if homogeneous)
int	m_npointsZ
	number of points in Z direction (if homogeneous)
int	m_HomoDirec
	number of homogenous directions
int	m_NumMode
	Mode to use in case of single mode analysis.

Private Member Functions
virtual NekDouble	v_GetTimeStep (const Array< OneD, int > ExpOrder, const Array< OneD, NekDouble > CFL, NekDouble timeCFL)
virtual NekDouble	v_GetTimeStep (int ExpOrder, NekDouble CFL, NekDouble TimeStability)
Array< OneD, NekDouble >	GetStdVelocity (const Array< OneD, Array< OneD, NekDouble > > inarray)

Friends
class	MemoryManager< CFLtester >

Additional Inherited Members
Public Attributes inherited from Nektar::SolverUtils::UnsteadySystem
NekDouble	m_cflSafetyFactor
	CFL safety factor (comprise between 0 to 1).
Protected Types inherited from Nektar::SolverUtils::EquationSystem
enum	HomogeneousType { eHomogeneous1D, eHomogeneous2D, eHomogeneous3D, eNotHomogeneous }
	Parameter for homogeneous expansions. More...

Detailed Description

Definition at line 81 of file CFLtester.h.

Constructor & Destructor Documentation

Nektar::CFLtester::~CFLtester ( )

virtual

Definition at line 78 of file CFLtester.cpp.

{

}

Nektar::CFLtester::CFLtester ( const LibUtilities::SessionReaderSharedPtr & pSession )

protected

Definition at line 48 of file CFLtester.cpp.

        : UnsteadySystem(pSession)
    {
    }

Member Function Documentation

static EquationSystemSharedPtr Nektar::CFLtester::create ( const LibUtilities::SessionReaderSharedPtr & pSession )

inlinestatic

Definition at line 86 of file CFLtester.h.

                                                                                                  {
              EquationSystemSharedPtr p = MemoryManager<CFLtester>::AllocateSharedPtr(pSession);
              p->InitObject();
              return p;}

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

protected

Definition at line 131 of file CFLtester.cpp.

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().

    {
        int j;
        int nvariables = inarray.num_elements();
        SetBoundaryConditions(time);
        switch(m_projectionType)
        {
            case MultiRegions::eDiscontinuous:
            {
                // Just copy over array
                int npoints = GetNpoints();
                for(j = 0; j < nvariables; ++j)
                {
                    Vmath::Vcopy(npoints,inarray[j],1,outarray[j],1);
                }
            }
            break;
            case MultiRegions::eGalerkin:
            case MultiRegions::eMixed_CG_Discontinuous:
            {
                Array<OneD, NekDouble> coeffs(m_fields[0]->GetNcoeffs());
                for(j = 0; j < nvariables; ++j)
                {
                    m_fields[j]->FwdTrans(inarray[j],coeffs);
                    m_fields[j]->BwdTrans_IterPerExp(coeffs,outarray[j]);
                }
                break;
            }
            default:
                ASSERTL0(false,"Unknown projection scheme");
                break;
        }
    }

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

protected

Definition at line 82 of file CFLtester.cpp.

References Nektar::SolverUtils::EquationSystem::AdvectionNonConservativeForm(), Nektar::MultiRegions::eDiscontinuous, Nektar::MultiRegions::eGalerkin, Nektar::MultiRegions::eMixed_CG_Discontinuous, Nektar::SolverUtils::EquationSystem::GetNpoints(), Nektar::SolverUtils::EquationSystem::m_fields, Nektar::SolverUtils::EquationSystem::m_projectionType, m_velocity, Vmath::Neg(), and Nektar::SolverUtils::EquationSystem::WeakDGAdvection().

Referenced by v_InitObject().

    {
        int j;
        int nvariables = inarray.num_elements();
        int npoints = GetNpoints();
        switch (m_projectionType)
        {
            case MultiRegions::eDiscontinuous:
            {
                int ncoeffs    = inarray[0].num_elements();
                Array<OneD, Array<OneD, NekDouble> > WeakAdv(nvariables);
                WeakAdv[0] = Array<OneD, NekDouble>(ncoeffs*nvariables);
                for(j = 1; j < nvariables; ++j)
                {
                    WeakAdv[j] = WeakAdv[j-1] + ncoeffs;
                }
                WeakDGAdvection(inarray, WeakAdv, true, true);
                for(j = 0; j < nvariables; ++j)
                {
                    m_fields[j]->MultiplyByElmtInvMass(WeakAdv[j], WeakAdv[j]);
                    m_fields[j]->BwdTrans(WeakAdv[j],outarray[j]);
                    Vmath::Neg(npoints,outarray[j],1);
                }
                break;
            }
            case MultiRegions::eGalerkin:
            case MultiRegions::eMixed_CG_Discontinuous:
            {
                // Calculate -V\cdot Grad(u);
                for(j = 0; j < nvariables; ++j)
                {
                    AdvectionNonConservativeForm(m_velocity, 
                                                 inarray[j],
                                                 outarray[j]);
                    
                    Vmath::Neg(npoints, outarray[j], 1);
                }
                break;
            }
        }
    }

Array< OneD, NekDouble > Nektar::CFLtester::GetStdVelocity ( const Array< OneD, Array< OneD, NekDouble > > inarray )

private

Definition at line 329 of file CFLtester.cpp.

References ASSERTL0, Nektar::SpatialDomains::eDeformed, Nektar::StdRegions::StdExpansion::GetTotPoints(), Nektar::SolverUtils::EquationSystem::GetTotPoints(), Nektar::SolverUtils::EquationSystem::m_expdim, and Nektar::SolverUtils::EquationSystem::m_fields.

Referenced by v_GetTimeStep().

    {
        // Checking if the problem is 2D
        ASSERTL0(m_expdim >= 2, "Method not implemented for 1D");
        
        int nTotQuadPoints  = GetTotPoints();
        int n_element       = m_fields[0]->GetExpSize();       
        int nvel            = inarray.num_elements();
        
        NekDouble pntVelocity;
        
        // Getting the standard velocity vector on the 2D normal space
        Array<OneD, Array<OneD, NekDouble> > stdVelocity(nvel);
        Array<OneD, NekDouble> stdV(n_element, 0.0);
        
        for (int i = 0; i < nvel; ++i)
        {
            stdVelocity[i] = Array<OneD, NekDouble>(nTotQuadPoints);
        }
        
        if (nvel == 2)
        {
            for (int el = 0; el < n_element; ++el)
            { 
                LocalRegions::Expansion2DSharedPtr el2D =
                    m_fields[0]->GetExp(el)->as<LocalRegions::Expansion2D>();
                int n_points = el2D->GetTotPoints();
                
                Array<OneD, const NekDouble> jac  = 
                        el2D->GetGeom2D()->GetMetricInfo()->GetJac();
                Array<TwoD, const NekDouble> gmat = 
                        el2D->GetGeom2D()->GetMetricInfo()->GetDerivFactors();
                
                if (el2D->GetGeom2D()->GetMetricInfo()->GetGtype()
                    == SpatialDomains::eDeformed)
                {
                    for (int i = 0; i < n_points; i++)
                    {
                        stdVelocity[0][i] = gmat[0][i]*inarray[0][i] 
                        + gmat[2][i]*inarray[1][i];
                        
                        stdVelocity[1][i] = gmat[1][i]*inarray[0][i] 
                        + gmat[3][i]*inarray[1][i];
                    }
                }
                else
                {
                    for (int i = 0; i < n_points; i++)
                    {
                        stdVelocity[0][i] = gmat[0][0]*inarray[0][i] 
                        + gmat[2][0]*inarray[1][i];
                        
                        stdVelocity[1][i] = gmat[1][0]*inarray[0][i] 
                        + gmat[3][0]*inarray[1][i];
                    }
                }
                
                
                for (int i = 0; i < n_points; i++)
                {
                    pntVelocity = sqrt(stdVelocity[0][i]*stdVelocity[0][i] 
                                       + stdVelocity[1][i]*stdVelocity[1][i]);
                    
                    if (pntVelocity>stdV[el])
                    {
                        stdV[el] = pntVelocity;
                    }
                }
            }
        }
        else
        {
            for (int el = 0; el < n_element; ++el)
            { 
                LocalRegions::Expansion3DSharedPtr el3D =
                    m_fields[0]->GetExp(el)->as<LocalRegions::Expansion3D>();
                int n_points = el3D->GetTotPoints();
                
                Array<OneD, const NekDouble> jac =
                        el3D->GetGeom3D()->GetMetricInfo()->GetJac();
                Array<TwoD, const NekDouble> gmat =
                        el3D->GetGeom3D()->GetMetricInfo()->GetDerivFactors();
                
                if (el3D->GetGeom3D()->GetMetricInfo()->GetGtype()
                    == SpatialDomains::eDeformed)
                {
                    for (int i = 0; i < n_points; i++)
                    {
                        stdVelocity[0][i] = gmat[0][i]*inarray[0][i] 
                        + gmat[3][i]*inarray[1][i] 
                        + gmat[6][i]*inarray[2][i];
                        
                        stdVelocity[1][i] = gmat[1][i]*inarray[0][i] 
                        + gmat[4][i]*inarray[1][i] 
                        + gmat[7][i]*inarray[2][i];
                        
                        stdVelocity[2][i] = gmat[2][i]*inarray[0][i] 
                        + gmat[5][i]*inarray[1][i] 
                        + gmat[8][i]*inarray[2][i];
                    }
                }
                else
                {
                    Array<OneD, const NekDouble> jac =
                            el3D->GetGeom3D()->GetMetricInfo()->GetJac();
                    Array<TwoD, const NekDouble> gmat = 
                            el3D->GetGeom3D()->GetMetricInfo()->GetDerivFactors();
                    
                    for (int i = 0; i < n_points; i++)
                    {
                        stdVelocity[0][i] = gmat[0][0]*inarray[0][i] 
                        + gmat[3][0]*inarray[1][i] 
                        + gmat[6][0]*inarray[2][i];
                        
                        stdVelocity[1][i] = gmat[1][0]*inarray[0][i] 
                        + gmat[4][0]*inarray[1][i] 
                        + gmat[7][0]*inarray[2][i];
                        
                        stdVelocity[2][i] = gmat[2][0]*inarray[0][i] 
                        + gmat[5][0]*inarray[1][i] 
                        + gmat[8][0]*inarray[2][i];
                    }
                }
                
                for (int i = 0; i < n_points; i++)
                {
                    pntVelocity = sqrt(stdVelocity[0][i]*stdVelocity[0][i] 
                                       + stdVelocity[1][i]*stdVelocity[1][i] 
                                       + stdVelocity[2][i]*stdVelocity[2][i]);
                    
                    if (pntVelocity > stdV[el])
                    {
                        stdV[el] = pntVelocity;
                    }
                }
            }
        }
        
        return stdV;
    }

void Nektar::CFLtester::v_GenerateSummary ( SummaryList & s )

protectedvirtual

Print a summary of time stepping parameters.

Prints a summary with some information regards the time-stepping.

Reimplemented from Nektar::SolverUtils::UnsteadySystem.

Definition at line 222 of file CFLtester.cpp.

    {
        UnsteadySystem::v_GenerateSummary(s);
    }

void Nektar::CFLtester::v_GetFluxVector	(	const int	i,
		Array< OneD, Array< OneD, NekDouble > > &	physfield,
		Array< OneD, Array< OneD, NekDouble > > &	flux
	)

protectedvirtual

Reimplemented from Nektar::SolverUtils::EquationSystem.

Definition at line 172 of file CFLtester.cpp.

References ASSERTL1, Nektar::SolverUtils::EquationSystem::GetNpoints(), m_velocity, and Vmath::Vmul().

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

NekDouble Nektar::CFLtester::v_GetTimeStep	(	const Array< OneD, int >	ExpOrder,
		const Array< OneD, NekDouble >	CFL,
		NekDouble	timeCFL
	)

privatevirtual

Definition at line 229 of file CFLtester.cpp.

References GetStdVelocity(), Nektar::SolverUtils::EquationSystem::m_fields, m_velocity, and Vmath::Vmin().

    { 
        
        int n_element       = m_fields[0]->GetExpSize();
        
        //const NekDouble minLengthStdTri  = 1.414213;
        //const NekDouble minLengthStdQuad = 2.0;
        //const NekDouble cLambda          = 0.2; // Spencer book pag. 317
        Array<OneD, NekDouble> tstep      (n_element, 0.0);
        Array<OneD, NekDouble> stdVelocity(n_element, 0.0);
        stdVelocity = GetStdVelocity(m_velocity);
        
        for (int el = 0; el < n_element; ++el)
        {
            int npoints = m_fields[0]->GetExp(el)->GetTotPoints();
            Array<OneD, NekDouble> one2D(npoints, 1.0);
            //NekDouble Area = m_fields[0]->GetExp(el)->Integral(one2D);
            if(boost::dynamic_pointer_cast<LocalRegions::TriExp>(m_fields[0]->GetExp(el)))
            {
                //tstep[el] =  timeCFL/(stdVelocity[el]*cLambda*(ExpOrder[el]-1)*(ExpOrder[el]-1));
                //tstep[el] =  timeCFL*minLengthStdTri/(stdVelocity[el]*cLambda*(ExpOrder[el]-1)*(ExpOrder[el]-1));
                tstep[el] = CFL[el]/(stdVelocity[el]);
            }
            else if(boost::dynamic_pointer_cast<LocalRegions::QuadExp>(m_fields[0]->GetExp(el)))
            { 
                //tstep[el] =  timeCFL/(stdVelocity[el]*cLambda*(ExpOrder[el]-1)*(ExpOrder[el]-1));
                //tstep[el] =  timeCFL*minLengthStdQuad/(stdVelocity[el]*cLambda*(ExpOrder[el]-1)*(ExpOrder[el]-1));
                tstep[el] = CFL[el]/(stdVelocity[el]);
            }
        }
        
        NekDouble TimeStep = Vmath::Vmin(n_element, tstep, 1);
        
        return TimeStep;
    }

NekDouble Nektar::CFLtester::v_GetTimeStep	(	int	ExpOrder,
		NekDouble	CFL,
		NekDouble	TimeStability
	)

privatevirtual

Definition at line 271 of file CFLtester.cpp.

References ASSERTL0, Nektar::EigenvaluesAnaMeshesAB2, Nektar::EigenvaluesAnaMeshesRK2, Nektar::EigenvaluesAnaMeshesRK4, and Nektar::SolverUtils::EquationSystem::m_fields.

    {
        //================================================================
        // This function has been created just to test specific problems, hence is not general
        // and it has been implemented in a rude fashion, as the full CFLtester class.
        // For real CFL calculations refer to the general implementation above. (A.Bolis)
        //================================================================
        
        NekDouble TimeStep;
        NekDouble SpatialStability;
        int n_elements = m_fields[0]->GetExpSize();
        
        //solve ambiguity in windows
        NekDouble n_elem = n_elements;
        NekDouble DH     = sqrt(n_elem);
        
        int H = (int)DH;
        int P = ExpOrder-1;
        
        //================================================================
        // Regular meshes
        
        //SpatialStability = EigenvaluesRegMeshes[H-1][P-1];
        
        //================================================================
        // Anisotropic meshes
        
        if (TimeStability == 1.0) 
        {
            SpatialStability = EigenvaluesAnaMeshesAB2[H/2][P-1];
        }
        else if (TimeStability == 2.0) 
        {
            SpatialStability = EigenvaluesAnaMeshesRK2[H/2][P-1];
        }
        else if (TimeStability == 2.784) 
        {
            SpatialStability = EigenvaluesAnaMeshesRK4[H/2][P-1];
        }
        else 
        {
            ASSERTL0(false,"Dominant eigenvalues database not present for this time-stepping scheme")
        }
        
        //================================================================
        
        TimeStep = (TimeStability/SpatialStability)*CFL;
        
        //================================================================
        
        return TimeStep;
    }

void Nektar::CFLtester::v_InitObject ( )

protectedvirtual

Init object for UnsteadySystem class.

Initialization object for UnsteadySystem class.

Reimplemented from Nektar::SolverUtils::UnsteadySystem.

Definition at line 54 of file CFLtester.cpp.

References ASSERTL0, Nektar::LibUtilities::TimeIntegrationSchemeOperators::DefineOdeRhs(), Nektar::LibUtilities::TimeIntegrationSchemeOperators::DefineProjection(), DoOdeProjection(), DoOdeRhs(), Nektar::SolverUtils::EquationSystem::EvaluateFunction(), Nektar::SolverUtils::UnsteadySystem::m_explicitAdvection, Nektar::SolverUtils::UnsteadySystem::m_ode, Nektar::SolverUtils::EquationSystem::m_spacedim, and m_velocity.

    {
        UnsteadySystem::v_InitObject();
        m_velocity = Array<OneD, Array<OneD, NekDouble> >(m_spacedim);
        std::vector<std::string> vel;
        vel.push_back("Vx");
        vel.push_back("Vy");
        vel.push_back("Vz");
        vel.resize(m_spacedim);
        EvaluateFunction(vel, m_velocity, "AdvectionVelocity");
        if (m_explicitAdvection)
        {
            m_ode.DefineOdeRhs     (&CFLtester::DoOdeRhs,        this);
            m_ode.DefineProjection (&CFLtester::DoOdeProjection, this);
        }
        else
        {
            ASSERTL0(false, "Implicit unsteady Advection not set up.");
        }
    }

void Nektar::CFLtester::v_NumericalFlux	(	Array< OneD, Array< OneD, NekDouble > > &	physfield,
		Array< OneD, Array< OneD, NekDouble > > &	numflux
	)

protectedvirtual

Reimplemented from Nektar::SolverUtils::UnsteadySystem.

Definition at line 189 of file CFLtester.cpp.

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

    {
        int i;
        int nTraceNumPoints = GetTraceNpoints();
        int nvel = m_spacedim;
        Array<OneD, NekDouble > Fwd(nTraceNumPoints);
        Array<OneD, NekDouble > Bwd(nTraceNumPoints);
        Array<OneD, NekDouble > Vn (nTraceNumPoints,0.0);
        // Get Edge Velocity - Could be stored if time independent
        for (i = 0; i < nvel; ++i)
        {
            m_fields[0]->ExtractTracePhys(m_velocity[i], Fwd);
            Vmath::Vvtvp(nTraceNumPoints,
                         m_traceNormals[i], 1,
                         Fwd, 1, Vn, 1, Vn, 1);
        }
        for (i = 0; i < numflux.num_elements(); ++i)
        {
            m_fields[i]->GetFwdBwdTracePhys(physfield[i], Fwd, Bwd);
            //evaulate upwinded m_fields[i]
            m_fields[i]->GetTrace()->Upwind(Vn, Fwd, Bwd, numflux[i]);
            // calculate m_fields[i]*Vn
            Vmath::Vmul(nTraceNumPoints, numflux[i], 1, Vn, 1, numflux[i], 1);
        }
    }

Friends And Related Function Documentation

friend class MemoryManager< CFLtester >

friend

Definition at line 84 of file CFLtester.h.

Member Data Documentation

string Nektar::CFLtester::className = GetEquationSystemFactory().RegisterCreatorFunction("CFLtester", CFLtester::create, "Testing CFL restriction")

static

Definition at line 91 of file CFLtester.h.

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

protected

Definition at line 97 of file CFLtester.h.

Referenced by DoOdeRhs(), v_GetFluxVector(), v_GetTimeStep(), v_InitObject(), and v_NumericalFlux().

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Member Functions

Protected Attributes

Private Member Functions

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Friends And Related Function Documentation

Member Data Documentation