This class is the base class for Navier Stokes problems. More...

#include <IncNavierStokes.h>

Inheritance diagram for Nektar::IncNavierStokes:

Public Member Functions
virtual	~IncNavierStokes ()

virtual void	v_InitObject ()
	Init object for UnsteadySystem class. More...

int	GetNConvectiveFields (void)

Array< OneD, int > &	GetVelocity (void)

void	AddForcing (const SolverUtils::ForcingSharedPtr &pForce)

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

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

virtual bool	HasConstantDensity ()

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

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

virtual SOLVER_UTILS_EXPORT	~AdvectionSystem ()

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

SOLVER_UTILS_EXPORT Array< OneD, NekDouble >	GetElmtCFLVals (void)

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...

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

SOLVER_UTILS_EXPORT void	SetUpTraceNormals (void)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

SOLVER_UTILS_EXPORT int	GetNcoeffs ()

SOLVER_UTILS_EXPORT int	GetNcoeffs (const int eid)

SOLVER_UTILS_EXPORT int	GetNumExpModes ()

SOLVER_UTILS_EXPORT const Array< OneD, int >	GetNumExpModesPerExp ()

SOLVER_UTILS_EXPORT int	GetNvariables ()

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

SOLVER_UTILS_EXPORT int	GetTraceTotPoints ()

SOLVER_UTILS_EXPORT int	GetTraceNpoints ()

SOLVER_UTILS_EXPORT int	GetExpSize ()

SOLVER_UTILS_EXPORT int	GetPhys_Offset (int n)

SOLVER_UTILS_EXPORT int	GetCoeff_Offset (int n)

SOLVER_UTILS_EXPORT int	GetTotPoints ()

SOLVER_UTILS_EXPORT int	GetTotPoints (int n)

SOLVER_UTILS_EXPORT int	GetNpoints ()

SOLVER_UTILS_EXPORT int	GetSteps ()

SOLVER_UTILS_EXPORT NekDouble	GetTimeStep ()

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

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

SOLVER_UTILS_EXPORT void	SetSteps (const int steps)

SOLVER_UTILS_EXPORT void	ZeroPhysFields ()

SOLVER_UTILS_EXPORT void	FwdTransFields ()

SOLVER_UTILS_EXPORT void	SetModifiedBasis (const bool modbasis)

SOLVER_UTILS_EXPORT int	GetCheckpointNumber ()

SOLVER_UTILS_EXPORT void	SetCheckpointNumber (int num)

SOLVER_UTILS_EXPORT int	GetCheckpointSteps ()

SOLVER_UTILS_EXPORT void	SetCheckpointSteps (int num)

SOLVER_UTILS_EXPORT void	SetTime (const NekDouble time)

SOLVER_UTILS_EXPORT void	SetInitialStep (const int step)

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

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

Protected Member Functions
	IncNavierStokes (const LibUtilities::SessionReaderSharedPtr &pSession, const SpatialDomains::MeshGraphSharedPtr &pGraph)
	Constructor. More...

EquationType	GetEquationType (void)

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

void	WriteModalEnergy (void)

void	SetBoundaryConditions (NekDouble time)
	time dependent boundary conditions updating More...

void	SetRadiationBoundaryForcing (int fieldid)
	Set Radiation forcing term. More...

void	SetZeroNormalVelocity ()
	Set Normal Velocity Component to Zero. More...

void	SetWomersleyBoundary (const int fldid, const int bndid)
	Set Womersley Profile if specified. More...

void	SetUpWomersley (const int fldid, const int bndid, std::string womstr)
	Set Up Womersley details. More...

virtual MultiRegions::ExpListSharedPtr	v_GetPressure ()

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

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

virtual int	v_GetForceDimension ()=0

virtual Array< OneD, NekDouble >	v_GetMaxStdVelocity ()

virtual bool	v_PreIntegrate (int step)

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

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

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

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

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

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

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

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

virtual SOLVER_UTILS_EXPORT bool	v_RequireFwdTrans ()

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

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

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

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

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

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

Protected Attributes
ExtrapolateSharedPtr	m_extrapolation

std::ofstream	m_mdlFile
	modal energy file More...

bool	m_SmoothAdvection
	bool to identify if advection term smoothing is requested More...

std::vector< SolverUtils::ForcingSharedPtr >	m_forcing
	Forcing terms. More...

int	m_nConvectiveFields
	Number of fields to be convected;. More...

Array< OneD, int >	m_velocity
	int which identifies which components of m_fields contains the velocity (u,v,w); More...

MultiRegions::ExpListSharedPtr	m_pressure
	Pointer to field holding pressure field. More...

NekDouble	m_kinvis
	Kinematic viscosity. More...

int	m_energysteps
	dump energy to file at steps time More...

EquationType	m_equationType
	equation type; More...

Array< OneD, Array< OneD, int > >	m_fieldsBCToElmtID
	Mapping from BCs to Elmt IDs. More...

Array< OneD, Array< OneD, int > >	m_fieldsBCToTraceID
	Mapping from BCs to Elmt Edge IDs. More...

Array< OneD, Array< OneD, NekDouble > >	m_fieldsRadiationFactor
	RHS Factor for Radiation Condition. More...

int	m_intSteps
	Number of time integration steps AND Order of extrapolation for pressure boundary conditions. More...

std::map< int, std::map< int, WomersleyParamsSharedPtr > >	m_womersleyParams
	Womersley parameters if required. More...

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

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

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

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

int	m_nanSteps

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

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

LibUtilities::TimeIntegrationSolutionSharedPtr	m_intSoln

NekDouble	m_epsilon

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

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

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

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

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

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

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

std::ofstream	m_errFile

std::vector< int >	m_intVariables

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

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

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

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...

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

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

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

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

int	m_expdim
	Expansion dimension. More...

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

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

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

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

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

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

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

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

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

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

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

enum HomogeneousType	m_HomogeneousType

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

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

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

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

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

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

int	m_HomoDirec
	number of homogenous directions More...

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

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

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

Detailed Description

This class is the base class for Navier Stokes problems.

Definition at line 136 of file IncNavierStokes.h.

Constructor & Destructor Documentation

◆ ~IncNavierStokes()

Nektar::IncNavierStokes::~IncNavierStokes ( void )

virtual

Destructor

Definition at line 280 of file IncNavierStokes.cpp.

281 {

282 }

◆ IncNavierStokes()

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

protected

Constructor.

Constructor. Creates ...

Parameters

Definition at line 68 of file IncNavierStokes.cpp.

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

Member Function Documentation

◆ AddForcing()

void Nektar::IncNavierStokes::AddForcing ( const SolverUtils::ForcingSharedPtr & pForce )

Add an additional forcing term programmatically.

Definition at line 778 of file IncNavierStokes.cpp.

References m_forcing.

Referenced by Nektar::VortexWaveInteraction::ExecuteRoll().

     {
         m_forcing.push_back(pForce);
     }

◆ EvaluateAdvectionTerms()

void Nektar::IncNavierStokes::EvaluateAdvectionTerms	(	const Array< OneD, const Array< OneD, NekDouble > > &	inarray,
		Array< OneD, Array< OneD, NekDouble > > &	outarray
	)

protected

Evaluation -N(V) for all fields except pressure using m_velocity

Definition at line 287 of file IncNavierStokes.cpp.

References Nektar::SolverUtils::AdvectionSystem::m_advObject, Nektar::SolverUtils::EquationSystem::m_fields, m_nConvectiveFields, Nektar::SolverUtils::EquationSystem::m_time, and m_velocity.

Referenced by Nektar::CoupledLinearNS::EvaluateAdvection(), Nektar::CoupledLinearNS::EvaluateNewtonRHS(), Nektar::VCSMapping::v_EvaluateAdvection_SetPressureBCs(), and Nektar::VelocityCorrectionScheme::v_EvaluateAdvection_SetPressureBCs().

     {
         int i;
         int VelDim     = m_velocity.num_elements();
         Array<OneD, Array<OneD, NekDouble> > velocity(VelDim);
 
         for(i = 0; i < VelDim; ++i)
         {
             velocity[i] = inarray[m_velocity[i]];
         }
 
         m_advObject->Advect(m_nConvectiveFields, m_fields,
                             velocity, inarray, outarray, m_time);
     }

◆ GetDensity()

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

virtual

Extract array with density from physfield.

Implements Nektar::SolverUtils::FluidInterface.

Definition at line 832 of file IncNavierStokes.cpp.

References Vmath::Fill().

     {
         int nPts  = physfield[0].num_elements();
         Vmath::Fill(nPts, 1.0, density, 1);
     }

◆ GetEquationType()

EquationType Nektar::IncNavierStokes::GetEquationType ( void )

inlineprotected

Definition at line 221 of file IncNavierStokes.h.

         {
             return m_equationType;
         }

◆ GetNConvectiveFields()

int Nektar::IncNavierStokes::GetNConvectiveFields ( void )

inline

Definition at line 145 of file IncNavierStokes.h.

         {
             return m_nConvectiveFields;
         }

◆ GetPressure()

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

virtual

Extract array with pressure from physfield.

Implements Nektar::SolverUtils::FluidInterface.

Definition at line 822 of file IncNavierStokes.cpp.

References m_nConvectiveFields.

     {
         pressure = physfield[m_nConvectiveFields];
     }

◆ GetVelocity() [1/2]

Array<OneD, int>& Nektar::IncNavierStokes::GetVelocity ( void )

inline

Definition at line 150 of file IncNavierStokes.h.

References Nektar::SolverUtils::ForcingSharedPtr, and CG_Iterations::pressure.

         {
             return  m_velocity;
         }

◆ GetVelocity() [2/2]

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

virtual

Extract array with velocity from physfield.

Implements Nektar::SolverUtils::FluidInterface.

Definition at line 843 of file IncNavierStokes.cpp.

References Nektar::SolverUtils::EquationSystem::m_spacedim.

     {
         for(int i = 0; i < m_spacedim; ++i)
         {
             velocity[i] = physfield[i];
         }
     }

◆ HasConstantDensity()

virtual bool Nektar::IncNavierStokes::HasConstantDensity ( )

inlinevirtual

Implements Nektar::SolverUtils::FluidInterface.

Definition at line 165 of file IncNavierStokes.h.

         {
             return true;
         }

◆ SetBoundaryConditions()

void Nektar::IncNavierStokes::SetBoundaryConditions ( NekDouble time )

protected

time dependent boundary conditions updating

Time dependent boundary conditions updating

Definition at line 307 of file IncNavierStokes.cpp.

References Nektar::SolverUtils::EquationSystem::m_fields, Nektar::SolverUtils::EquationSystem::m_session, SetRadiationBoundaryForcing(), SetWomersleyBoundary(), and SetZeroNormalVelocity().

Referenced by Nektar::VelocityCorrectionScheme::v_DoInitialise(), and v_PreIntegrate().

     {
         int i, n;
         std::string varName;
         int nvariables = m_fields.num_elements();
 
         for (i = 0; i < nvariables; ++i)
         {
             for(n = 0; n < m_fields[i]->GetBndConditions().num_elements(); ++n)
             {
                 if(m_fields[i]->GetBndConditions()[n]->IsTimeDependent())
                 {
                     varName = m_session->GetVariable(i);
                     m_fields[i]->EvaluateBoundaryConditions(time, varName);
                 }
                 else if(boost::istarts_with(
                           m_fields[i]->GetBndConditions()[n]->GetUserDefined(),
                           "Womersley"))
                 {
                     SetWomersleyBoundary(i,n);
                 }
             }
 
             // Set Radiation conditions if required
             SetRadiationBoundaryForcing(i);
         }
 
         SetZeroNormalVelocity();
     }

◆ SetRadiationBoundaryForcing()

void Nektar::IncNavierStokes::SetRadiationBoundaryForcing ( int fieldid )

protected

Set Radiation forcing term.

Probably should be pushed back into ContField?

Definition at line 340 of file IncNavierStokes.cpp.

References Nektar::SpatialDomains::eRobin, Nektar::SolverUtils::EquationSystem::GetCoeff_Offset(), Nektar::SolverUtils::EquationSystem::GetPhys_Offset(), Nektar::SolverUtils::EquationSystem::m_fields, m_fieldsBCToElmtID, m_fieldsBCToTraceID, m_fieldsRadiationFactor, m_velocity, and Vmath::Vmul().

Referenced by SetBoundaryConditions().

     {
         int  i,n;
 
         Array<OneD, const SpatialDomains::BoundaryConditionShPtr > BndConds;
         Array<OneD, MultiRegions::ExpListSharedPtr>                BndExp;
 
         BndConds = m_fields[fieldid]->GetBndConditions();
         BndExp   = m_fields[fieldid]->GetBndCondExpansions();
 
         StdRegions::StdExpansionSharedPtr elmt;
         StdRegions::StdExpansionSharedPtr Bc;
 
         int cnt;
         int elmtid,nq,offset, boundary;
         Array<OneD, NekDouble> Bvals, U;
         int cnt1 = 0;
 
         for(cnt = n = 0; n < BndConds.num_elements(); ++n)
         {
             std::string type = BndConds[n]->GetUserDefined();
 
             if((BndConds[n]->GetBoundaryConditionType() ==
                     SpatialDomains::eRobin) &&
                 (boost::iequals(type,"Radiation")))
             {
                 for(i = 0; i < BndExp[n]->GetExpSize(); ++i,cnt++)
                 {
                     elmtid = m_fieldsBCToElmtID[m_velocity[fieldid]][cnt];
                     elmt   = m_fields[fieldid]->GetExp(elmtid);
                     offset = m_fields[fieldid]->GetPhys_Offset(elmtid);
 
                     U = m_fields[fieldid]->UpdatePhys() + offset;
                     Bc = BndExp[n]->GetExp(i);
 
                     boundary = m_fieldsBCToTraceID[fieldid][cnt];
 
                     // Get edge values and put into ubc
                     nq = Bc->GetTotPoints();
                     Array<OneD, NekDouble> ubc(nq);
                     elmt->GetTracePhysVals(boundary,Bc,U,ubc);
 
                     Vmath::Vmul(nq,&m_fieldsRadiationFactor[fieldid][cnt1 +
                                 BndExp[n]->GetPhys_Offset(i)],1,
                                 &ubc[0],1,&ubc[0],1);
 
                     Bvals = BndExp[n]->UpdateCoeffs()+BndExp[n]->
                                 GetCoeff_Offset(i);
 
                     Bc->IProductWRTBase(ubc,Bvals);
                 }
                 cnt1 += BndExp[n]->GetTotPoints();
             }
             else
             {
                 cnt += BndExp[n]->GetExpSize();
             }
         }
     }

◆ SetUpWomersley()

void Nektar::IncNavierStokes::SetUpWomersley	(	const int	fldid,
		const int	bndid,
		std::string	womstr
	)

protected

Set Up Womersley details.

Error value returned by TinyXML.

Definition at line 562 of file IncNavierStokes.cpp.

References ASSERTL0, ASSERTL1, Nektar::ParseUtils::GenerateVector(), Polylib::ImagBesselComp(), Nektar::SolverUtils::EquationSystem::m_fields, m_kinvis, m_womersleyParams, and Nektar::LibUtilities::rad().

Referenced by v_InitObject().

     {
         std::string::size_type indxBeg = womStr.find_first_of(':') + 1;
         string filename = womStr.substr(indxBeg,string::npos);
 
         TiXmlDocument doc(filename);
 
         bool loadOkay = doc.LoadFile();
         ASSERTL0(loadOkay,(std::string("Failed to load file: ") +
                            filename).c_str());
 
         TiXmlHandle docHandle(&doc);
 
         int err;    /// Error value returned by TinyXML.
 
         TiXmlElement *nektar = doc.FirstChildElement("NEKTAR");
         ASSERTL0(nektar, "Unable to find NEKTAR tag in file.");
 
         TiXmlElement *wombc = nektar->FirstChildElement("WOMERSLEYBC");
         ASSERTL0(wombc, "Unable to find WOMERSLEYBC tag in file.");
 
         // read womersley parameters
         TiXmlElement *womparam = wombc->FirstChildElement("WOMPARAMS");
         ASSERTL0(womparam, "Unable to find WOMPARAMS tag in file.");
 
         // Input coefficients
         TiXmlElement *params = womparam->FirstChildElement("W");
         map<std::string,std::string> Wparams;
 
         // read parameter list
         while (params)
         {
 
             std::string propstr;
             propstr = params->Attribute("PROPERTY");
 
             ASSERTL0(!propstr.empty(),
                     "Failed to read PROPERTY value Womersley BC Parameter");
 
 
             std::string valstr;
             valstr = params->Attribute("VALUE");
 
             ASSERTL0(!valstr.empty(),
                     "Failed to read VALUE value Womersley BC Parameter");
 
             std::transform(propstr.begin(),propstr.end(),propstr.begin(),
                            ::toupper);
             Wparams[propstr] = valstr;
 
             params = params->NextSiblingElement("W");
         }
         bool parseGood;
 
         // Read parameters
 
         ASSERTL0(Wparams.count("RADIUS") == 1,
           "Failed to find Radius parameter in Womersley boundary conditions");
         std::vector<NekDouble> rad;
         ParseUtils::GenerateVector(Wparams["RADIUS"],rad);
         m_womersleyParams[fldid][bndid]->m_radius = rad[0];
 
         ASSERTL0(Wparams.count("PERIOD") == 1,
           "Failed to find period parameter in Womersley boundary conditions");
         std::vector<NekDouble> period;
         parseGood = ParseUtils::GenerateVector(Wparams["PERIOD"],period);
         m_womersleyParams[fldid][bndid]->m_period = period[0];
 
 
         ASSERTL0(Wparams.count("AXISNORMAL") == 1,
           "Failed to find axisnormal parameter in Womersley boundary conditions");
         std::vector<NekDouble> anorm;
         parseGood = ParseUtils::GenerateVector(Wparams["AXISNORMAL"],anorm);
         m_womersleyParams[fldid][bndid]->m_axisnormal[0] = anorm[0];
         m_womersleyParams[fldid][bndid]->m_axisnormal[1] = anorm[1];
         m_womersleyParams[fldid][bndid]->m_axisnormal[2] = anorm[2];
 
 
         ASSERTL0(Wparams.count("AXISPOINT") == 1,
           "Failed to find axispoint parameter in Womersley boundary conditions");
         std::vector<NekDouble> apt;
         parseGood = ParseUtils::GenerateVector(Wparams["AXISPOINT"],apt);
         m_womersleyParams[fldid][bndid]->m_axispoint[0] = apt[0];
         m_womersleyParams[fldid][bndid]->m_axispoint[1] = apt[1];
         m_womersleyParams[fldid][bndid]->m_axispoint[2] = apt[2];
 
         // Read Temporal Fourier Coefficients.
 
         // Find the FourierCoeff tag
         TiXmlElement *coeff = wombc->FirstChildElement("FOURIERCOEFFS");
 
         // Input coefficients
         TiXmlElement *fval = coeff->FirstChildElement("F");
 
         int indx;
         int nextFourierCoeff = -1;
 
         while (fval)
         {
             nextFourierCoeff++;
 
             TiXmlAttribute *fvalAttr = fval->FirstAttribute();
             std::string attrName(fvalAttr->Name());
 
             ASSERTL0(attrName == "ID",
                 (std::string("Unknown attribute name: ") + attrName).c_str());
 
             err = fvalAttr->QueryIntValue(&indx);
             ASSERTL0(err == TIXML_SUCCESS, "Unable to read attribute ID.");
 
             std::string coeffStr = fval->FirstChild()->ToText()->ValueStr();
             vector<NekDouble> coeffvals;
 
             parseGood = ParseUtils::GenerateVector(coeffStr, coeffvals);
             ASSERTL0(parseGood,
                     (std::string("Problem reading value of fourier coefficient, ID=") +
                     boost::lexical_cast<string>(indx)).c_str());
             ASSERTL1(coeffvals.size() == 2,
                     (std::string("Have not read two entries of Fourier coefficicent from ID="+
                     boost::lexical_cast<string>(indx)).c_str()));
 
             m_womersleyParams[fldid][bndid]->m_wom_vel.push_back(NekComplexDouble (coeffvals[0], coeffvals[1]));
 
             fval = fval->NextSiblingElement("F");
         }
 
         // starting point of precalculation
         int  i,j,k;
         // M fourier coefficients
         int M_coeffs = m_womersleyParams[fldid][bndid]->m_wom_vel.size();
         NekDouble R = m_womersleyParams[fldid][bndid]->m_radius;
         NekDouble T = m_womersleyParams[fldid][bndid]->m_period;
         Array<OneD, NekDouble > x0 = m_womersleyParams[fldid][bndid]->m_axispoint;
 
         NekComplexDouble rqR;
         // Womersley Number
         NekComplexDouble omega_c (2.0*M_PI/T, 0.0);
         NekComplexDouble alpha_c (R*sqrt(omega_c.real()/m_kinvis), 0.0);
         NekComplexDouble z1 (1.0,0.0);
         NekComplexDouble i_pow_3q2 (-1.0/sqrt(2.0),1.0/sqrt(2.0));
 
         MultiRegions::ExpListSharedPtr  BndCondExp;
         BndCondExp   = m_fields[fldid]->GetBndCondExpansions()[bndid];
 
         StdRegions::StdExpansionSharedPtr bc;
         int cnt = 0;
         int nfq;
         Array<OneD, NekDouble> Bvals;
 
         int exp_npts = BndCondExp->GetExpSize();
         Array<OneD, NekDouble> wbc(exp_npts,0.0);
 
         // allocate time indepedent variables
         m_womersleyParams[fldid][bndid]->m_poiseuille = Array<OneD, Array<OneD, NekDouble> > (exp_npts);
         m_womersleyParams[fldid][bndid]->m_zvel = Array<OneD, Array<OneD, Array<OneD, NekComplexDouble> > > (exp_npts);
         // could use M_coeffs - 1 but need to avoid complicating things
         Array<OneD, NekComplexDouble> zJ0(M_coeffs);
         Array<OneD, NekComplexDouble> lamda_n(M_coeffs);
         Array<OneD, NekComplexDouble> k_c(M_coeffs);
         NekComplexDouble zJ0r;
 
         for (k=1; k < M_coeffs; k++)
         {
             k_c[k]  = NekComplexDouble((NekDouble) k, 0.0);
             lamda_n[k] = i_pow_3q2 * alpha_c * sqrt(k_c[k]);
             zJ0[k]  = Polylib::ImagBesselComp(0,lamda_n[k]);
         }
 
         // Loop over each element in an expansion
         for(i = 0; i < exp_npts; ++i,cnt++)
         {
             // Get Boundary and trace expansion
             bc = BndCondExp->GetExp(i);
             nfq = bc->GetTotPoints();
 
             Array<OneD, NekDouble> x(nfq,0.0);
             Array<OneD, NekDouble> y(nfq,0.0);
             Array<OneD, NekDouble> z(nfq,0.0);
             bc->GetCoords(x,y,z);
 
             m_womersleyParams[fldid][bndid]->m_poiseuille[i] =
                     Array<OneD, NekDouble> (nfq);
             m_womersleyParams[fldid][bndid]->m_zvel[i] =
                     Array<OneD, Array<OneD, NekComplexDouble> > (nfq);
 
             // Compute coefficients
             for (j=0; j < nfq; j++)
             {
                 rqR = NekComplexDouble (sqrt((x[j]-x0[0])*(x[j]-x0[0]) +
                          (y[j]-x0[1])*(y[j]-x0[1]) +
                          (z[j]-x0[2])*(z[j]-x0[2]))/R, 0.0);
 
                 // Compute Poiseulle Flow
                 m_womersleyParams[fldid][bndid]->m_poiseuille[i][j] =
                         m_womersleyParams[fldid][bndid]->m_wom_vel[0].real() *
                         (1. - rqR.real()*rqR.real());
 
 
                 m_womersleyParams[fldid][bndid]->m_zvel[i][j] =
                         Array<OneD, NekComplexDouble> (M_coeffs);
 
                 // compute the velocity information
                 for (k=1; k < M_coeffs; k++)
                 {
                     zJ0r = Polylib::ImagBesselComp(0,rqR * lamda_n[k]);
                     m_womersleyParams[fldid][bndid]->m_zvel[i][j][k] =
                             m_womersleyParams[fldid][bndid]->m_wom_vel[k] *
                             (z1 - (zJ0r / zJ0[k]));
                 }
             }
         }
     }

◆ SetWomersleyBoundary()

void Nektar::IncNavierStokes::SetWomersleyBoundary	(	const int	fldid,
		const int	bndid
	)

protected

Set Womersley Profile if specified.

Womersley boundary condition defintion

Definition at line 491 of file IncNavierStokes.cpp.

References ASSERTL1, Nektar::SolverUtils::EquationSystem::m_fields, Nektar::SolverUtils::EquationSystem::m_time, m_womersleyParams, and Vmath::Smul().

Referenced by SetBoundaryConditions().

     {
         ASSERTL1(m_womersleyParams.count(bndid) == 1,
                 "Womersley parameters for this boundary have not been set up");
 
         WomersleyParamsSharedPtr WomParam = m_womersleyParams[fldid][bndid];
         NekComplexDouble zvel;
         int  i,j,k;
 
         int M_coeffs = WomParam->m_wom_vel.size();
 
         NekDouble T = WomParam->m_period;
         NekDouble axis_normal = WomParam->m_axisnormal[fldid];
 
         // Womersley Number
         NekComplexDouble omega_c (2.0*M_PI/T, 0.0);
         NekComplexDouble k_c (0.0, 0.0);
         NekComplexDouble m_time_c (m_time, 0.0);
         NekComplexDouble zi (0.0,1.0);
         NekComplexDouble i_pow_3q2 (-1.0/sqrt(2.0),1.0/sqrt(2.0));
 
         MultiRegions::ExpListSharedPtr  BndCondExp;
         BndCondExp   = m_fields[fldid]->GetBndCondExpansions()[bndid];
 
         StdRegions::StdExpansionSharedPtr bc;
         int cnt=0;
         int nfq;
         Array<OneD, NekDouble> Bvals;
         int exp_npts = BndCondExp->GetExpSize();
         Array<OneD, NekDouble> wbc(exp_npts,0.0);
 
         Array<OneD, NekComplexDouble> zt(M_coeffs);
 
         // preallocate the exponent
         for (k=1; k < M_coeffs; k++)
         {
             k_c  = NekComplexDouble((NekDouble) k, 0.0);
             zt[k] = std::exp(zi * omega_c * k_c * m_time_c);
         }
 
         // Loop over each element in an expansion
         for(i = 0; i < exp_npts; ++i,cnt++)
         {
             // Get Boundary and trace expansion
             bc = BndCondExp->GetExp(i);
             nfq = bc->GetTotPoints();
             Array<OneD, NekDouble> wbc(nfq,0.0);
 
             // Compute womersley solution
             for (j=0; j < nfq; j++)
             {
                 wbc[j] = WomParam->m_poiseuille[i][j];
                 for (k=1; k < M_coeffs; k++)
                 {
                     zvel =  WomParam->m_zvel[i][j][k] * zt[k];
                     wbc[j] = wbc[j] + zvel.real();
                 }
             }
 
             // Multiply w by normal to get u,v,w component of velocity
             Vmath::Smul(nfq,axis_normal,wbc,1,wbc,1);
             // get the offset
             Bvals = BndCondExp->UpdateCoeffs()+
                     BndCondExp->GetCoeff_Offset(i);
 
             // Push back to Coeff space
             bc->FwdTrans(wbc,Bvals);
         }
     }

◆ SetZeroNormalVelocity()

void Nektar::IncNavierStokes::SetZeroNormalVelocity ( )

protected

Set Normal Velocity Component to Zero.

Definition at line 401 of file IncNavierStokes.cpp.

References Nektar::SpatialDomains::eDirichlet, Nektar::SolverUtils::EquationSystem::m_fields, m_fieldsBCToElmtID, m_fieldsBCToTraceID, Nektar::SolverUtils::EquationSystem::m_spacedim, m_velocity, Vmath::Neg(), and Vmath::Vvtvp().

Referenced by SetBoundaryConditions().

     {
         // use static trip since cannot use UserDefinedTag for zero
         // velocity and have time dependent conditions
         static bool Setup  = false;
 
         if(Setup == true)
         {
             return;
         }
         Setup = true;
 
         int  i,n;
 
         Array<OneD, Array<OneD, const SpatialDomains::BoundaryConditionShPtr > >
             BndConds(m_spacedim);
         Array<OneD, Array<OneD, MultiRegions::ExpListSharedPtr> >
             BndExp(m_spacedim);
 
 
         for(i = 0; i < m_spacedim; ++i)
         {
             BndConds[i] = m_fields[m_velocity[i]]->GetBndConditions();
             BndExp[i]   = m_fields[m_velocity[i]]->GetBndCondExpansions();
         }
 
         StdRegions::StdExpansionSharedPtr elmt,Bc;
 
         int cnt;
         int elmtid,nq, boundary;
 
         Array<OneD, Array<OneD, NekDouble> > normals;
         Array<OneD, NekDouble> Bphys,Bcoeffs;
 
         int fldid = m_velocity[0];
 
         for(cnt = n = 0; n < BndConds[0].num_elements(); ++n)
         {
             if((BndConds[0][n]->GetBoundaryConditionType() ==
                     SpatialDomains::eDirichlet) &&
                 (boost::iequals(BndConds[0][n]->GetUserDefined(),
                     "ZeroNormalComponent")))
             {
                 for(i = 0; i < BndExp[0][n]->GetExpSize(); ++i,cnt++)
                 {
                     elmtid   = m_fieldsBCToElmtID[fldid][cnt];
                     elmt     = m_fields[0]->GetExp(elmtid);
                     boundary = m_fieldsBCToTraceID[fldid][cnt];
 
                     normals = elmt->GetSurfaceNormal(boundary);
 
                     nq = BndExp[0][n]->GetExp(i)->GetTotPoints();
                     Array<OneD, NekDouble> normvel(nq,0.0);
 
                     for(int k = 0; k < m_spacedim; ++k)
                     {
                         Bphys  = BndExp[k][n]->UpdatePhys()+
                             BndExp[k][n]->GetPhys_Offset(i);
                         Bc  = BndExp[k][n]->GetExp(i);
                         Vmath::Vvtvp(nq,normals[k],1,Bphys,1,normvel,1,
                                      normvel,1);
                     }
 
                     // negate normvel for next step
                     Vmath::Neg(nq,normvel,1);
 
                     for(int k = 0; k < m_spacedim; ++k)
                     {
                         Bphys  = BndExp[k][n]->UpdatePhys()+
                             BndExp[k][n]->GetPhys_Offset(i);
                         Bcoeffs = BndExp[k][n]->UpdateCoeffs()+
                             BndExp[k][n]->GetCoeff_Offset(i);
                         Bc  = BndExp[k][n]->GetExp(i);
                         Vmath::Vvtvp(nq,normvel,1,normals[k],1,Bphys,1,
                                      Bphys,1);
                         Bc->FwdTrans_BndConstrained(Bphys,Bcoeffs);
                     }
                 }
             }
             else
             {
                 cnt += BndExp[0][n]->GetExpSize();
             }
         }
     }

◆ v_GetForceDimension()

virtual int Nektar::IncNavierStokes::v_GetForceDimension ( )

protectedpure virtual

Implemented in Nektar::CoupledLinearNS, and Nektar::VelocityCorrectionScheme.

Referenced by v_InitObject().

◆ v_GetMaxStdVelocity()

Array< OneD, NekDouble > Nektar::IncNavierStokes::v_GetMaxStdVelocity ( void )

protectedvirtual

Reimplemented from Nektar::SolverUtils::AdvectionSystem.

Definition at line 787 of file IncNavierStokes.cpp.

References Nektar::SolverUtils::EquationSystem::eHomogeneous1D, m_extrapolation, Nektar::SolverUtils::EquationSystem::m_fields, Nektar::SolverUtils::EquationSystem::m_HomogeneousType, and m_velocity.

     {
         int nvel  = m_velocity.num_elements();
         int nelmt = m_fields[0]->GetExpSize();
 
         Array<OneD, NekDouble> stdVelocity(nelmt, 0.0);
         Array<OneD, Array<OneD, NekDouble> > velfields;
 
         if(m_HomogeneousType == eHomogeneous1D) // just do check on 2D info
         {
             velfields = Array<OneD, Array<OneD, NekDouble> >(2);
 
             for(int i = 0; i < 2; ++i)
             {
                 velfields[i] = m_fields[m_velocity[i]]->UpdatePhys();
             }
         }
         else
         {
             velfields = Array<OneD, Array<OneD, NekDouble> >(nvel);
 
             for(int i = 0; i < nvel; ++i)
             {
                 velfields[i] = m_fields[m_velocity[i]]->UpdatePhys();
             }
         }
 
         stdVelocity = m_extrapolation->GetMaxStdVelocity(velfields);
 
         return stdVelocity;
     }

◆ v_GetPressure()

virtual MultiRegions::ExpListSharedPtr Nektar::IncNavierStokes::v_GetPressure ( void )

inlineprotectedvirtual

Reimplemented from Nektar::SolverUtils::EquationSystem.

Definition at line 249 of file IncNavierStokes.h.

         {
             return m_pressure;
         }

◆ v_InitObject()

void Nektar::IncNavierStokes::v_InitObject ( )

virtual

Init object for UnsteadySystem class.

Initialization object for UnsteadySystem class.

Reimplemented from Nektar::SolverUtils::AdvectionSystem.

Reimplemented in Nektar::CoupledLinearNS, Nektar::VCSMapping, and Nektar::VelocityCorrectionScheme.

Definition at line 77 of file IncNavierStokes.cpp.

Referenced by Nektar::VelocityCorrectionScheme::v_InitObject(), and Nektar::CoupledLinearNS::v_InitObject().

     {
         AdvectionSystem::v_InitObject();
 
         int i,j;
         int numfields = m_fields.num_elements();
         std::string velids[] = {"u","v","w"};
 
         // Set up Velocity field to point to the first m_expdim of m_fields;
         m_velocity = Array<OneD,int>(m_spacedim);
 
         for(i = 0; i < m_spacedim; ++i)
         {
             for(j = 0; j < numfields; ++j)
             {
                 std::string var = m_boundaryConditions->GetVariable(j);
                 if(boost::iequals(velids[i], var))
                 {
                     m_velocity[i] = j;
                     break;
                 }
 
                 ASSERTL0(j != numfields, "Failed to find field: " + var);
             }
         }
 
         // Set up equation type enum using kEquationTypeStr
         for(i = 0; i < (int) eEquationTypeSize; ++i)
         {
             bool match;
             m_session->MatchSolverInfo("EQTYPE",
                             kEquationTypeStr[i],match,false);
             if(match)
             {
                 m_equationType = (EquationType)i;
                 break;
             }
         }
         ASSERTL0(i != eEquationTypeSize,
                 "EQTYPE not found in SOLVERINFO section");
 
         // This probably should to into specific implementations
         // Equation specific Setups
         switch(m_equationType)
         {
         case eSteadyStokes:
         case eSteadyOseen:
         case eSteadyNavierStokes:
         case eSteadyLinearisedNS:
         case eUnsteadyNavierStokes:
         case eUnsteadyStokes:
             break;
         case eNoEquationType:
         default:
             ASSERTL0(false,"Unknown or undefined equation type");
         }
 
         m_session->LoadParameter("Kinvis", m_kinvis);
 
         // Default advection type per solver
         std::string vConvectiveType;
         switch(m_equationType)
         {
         case eUnsteadyStokes:
         case eSteadyLinearisedNS:
             vConvectiveType = "NoAdvection";
             break;
         case eUnsteadyNavierStokes:
         case eSteadyNavierStokes:
             vConvectiveType = "Convective";
             break;
         case eUnsteadyLinearisedNS:
             vConvectiveType = "Linearised";
             break;
         default:
             break;
         }
 
         // Check if advection type overridden
         if (m_session->DefinesTag("AdvectiveType") &&
             m_equationType != eUnsteadyStokes &&
             m_equationType != eSteadyLinearisedNS)
         {
             vConvectiveType = m_session->GetTag("AdvectiveType");
         }
 
         // Initialise advection
         m_advObject = SolverUtils::GetAdvectionFactory().CreateInstance(
                         vConvectiveType, vConvectiveType);
         m_advObject->InitObject( m_session, m_fields);
 
         // Forcing terms
         m_forcing = SolverUtils::Forcing::Load(m_session, shared_from_this(),
                                             m_fields, v_GetForceDimension());
 
         // check to see if any Robin boundary conditions and if so set
         // up m_field to boundary condition maps;
         m_fieldsBCToElmtID  = Array<OneD, Array<OneD, int> >(numfields);
         m_fieldsBCToTraceID = Array<OneD, Array<OneD, int> >(numfields);
         m_fieldsRadiationFactor  = 
                 Array<OneD, Array<OneD, NekDouble> > (numfields);
 
         for (i = 0; i < m_fields.num_elements(); ++i)
         {
             bool Set = false;
 
             Array<OneD, const SpatialDomains::BoundaryConditionShPtr > BndConds;
             Array<OneD, MultiRegions::ExpListSharedPtr>  BndExp;
             int radpts = 0;
 
             BndConds = m_fields[i]->GetBndConditions();
             BndExp   = m_fields[i]->GetBndCondExpansions();
             for(int n = 0; n < BndConds.num_elements(); ++n)
             {
                 if(boost::iequals(BndConds[n]->GetUserDefined(),"Radiation"))
                 {
                     ASSERTL0(BndConds[n]->GetBoundaryConditionType() ==
                         SpatialDomains::eRobin,
                         "Radiation boundary condition must be of type Robin <R>");
 
                     if(Set == false)
                     {
                         m_fields[i]->GetBoundaryToElmtMap(
                             m_fieldsBCToElmtID[i],m_fieldsBCToTraceID[i]);
                         Set = true;
                     }
                     radpts += BndExp[n]->GetTotPoints();
                 }
                 if(boost::iequals(BndConds[n]->GetUserDefined(),
                         "ZeroNormalComponent"))
                 {
                     ASSERTL0(BndConds[n]->GetBoundaryConditionType() ==
                             SpatialDomains::eDirichlet,
                             "Zero Normal Component boundary condition option must be of type Dirichlet <D>");
 
                     if(Set == false)
                     {
                         m_fields[i]->GetBoundaryToElmtMap(
                             m_fieldsBCToElmtID[i],m_fieldsBCToTraceID[i]);
                         Set = true;
                     }
                 }
             }
 
             m_fieldsRadiationFactor[i] = Array<OneD, NekDouble>(radpts);
 
             radpts = 0; // reset to use as a counter
 
             for(int n = 0; n < BndConds.num_elements(); ++n)
             {
                 if(boost::iequals(BndConds[n]->GetUserDefined(),"Radiation"))
                 {
 
                     int npoints    = BndExp[n]->GetNpoints();
                     Array<OneD, NekDouble> x0(npoints,0.0);
                     Array<OneD, NekDouble> x1(npoints,0.0);
                     Array<OneD, NekDouble> x2(npoints,0.0);
                     Array<OneD, NekDouble> tmpArray;
 
                     BndExp[n]->GetCoords(x0,x1,x2);
 
                     LibUtilities::Equation coeff =
                         std::static_pointer_cast<
                     SpatialDomains::RobinBoundaryCondition
                         >(BndConds[n])->m_robinPrimitiveCoeff;
 
                     coeff.Evaluate(x0,x1,x2,m_time,
                                    tmpArray = m_fieldsRadiationFactor[i]+ radpts);
                     //Vmath::Neg(npoints,tmpArray = m_fieldsRadiationFactor[i]+ radpts,1);
                     radpts += npoints;
                 }
             }
         }
 
         // Set up maping for womersley BC - and load variables
         for (int i = 0; i < m_fields.num_elements(); ++i)
         {
             for(int n = 0; n < m_fields[i]->GetBndConditions().num_elements(); ++n)
             {
                 if(boost::istarts_with(m_fields[i]->GetBndConditions()[n]->GetUserDefined(),"Womersley"))
                 {
                     // assumes that boundary condition is applied in normal direction
                     // and is decomposed for each direction. There could be a
                     // unique file for each direction
                     m_womersleyParams[i][n] = MemoryManager<WomersleyParams>::AllocateSharedPtr(m_spacedim);
                     // Read in fourier coeffs and precompute coefficients
                     SetUpWomersley(i, n,
                                    m_fields[i]->GetBndConditions()[n]->GetUserDefined());
 
                     m_fields[i]->GetBoundaryToElmtMap(m_fieldsBCToElmtID[i],m_fieldsBCToTraceID[i]);
 
                 }
             }
         }
 
         // Set up Field Meta Data for output files
         m_fieldMetaDataMap["Kinvis"]   = boost::lexical_cast<std::string>(m_kinvis);
         m_fieldMetaDataMap["TimeStep"] = boost::lexical_cast<std::string>(m_timestep);
     }

◆ v_PreIntegrate()

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

protectedvirtual

Perform the extrapolation.

Reimplemented from Nektar::SolverUtils::UnsteadySystem.

Definition at line 856 of file IncNavierStokes.cpp.

References m_extrapolation, Nektar::SolverUtils::UnsteadySystem::m_intSoln, Nektar::SolverUtils::EquationSystem::m_time, Nektar::SolverUtils::EquationSystem::m_timestep, and SetBoundaryConditions().

     {
         m_extrapolation->SubStepSaveFields(step);
         m_extrapolation->SubStepAdvance(m_intSoln,step,m_time);
         SetBoundaryConditions(m_time+m_timestep);
         return false;
     }

◆ v_TransCoeffToPhys()

virtual void Nektar::IncNavierStokes::v_TransCoeffToPhys ( void )

inlineprotectedvirtual

Virtual function for transformation to physical space.

Reimplemented from Nektar::SolverUtils::EquationSystem.

Reimplemented in Nektar::CoupledLinearNS, and Nektar::VelocityCorrectionScheme.

Definition at line 254 of file IncNavierStokes.h.

References ASSERTL0.

         {
             ASSERTL0(false,"This method is not defined in this class");
         }

◆ v_TransPhysToCoeff()

virtual void Nektar::IncNavierStokes::v_TransPhysToCoeff ( void )

inlineprotectedvirtual

Virtual function for transformation to coefficient space.

Reimplemented from Nektar::SolverUtils::EquationSystem.

Reimplemented in Nektar::CoupledLinearNS, and Nektar::VelocityCorrectionScheme.

Definition at line 259 of file IncNavierStokes.h.

References ASSERTL0.

         {
             ASSERTL0(false,"This method is not defined in this class");
         }

◆ WriteModalEnergy()

void Nektar::IncNavierStokes::WriteModalEnergy ( void )

protected

Member Data Documentation

◆ m_energysteps

int Nektar::IncNavierStokes::m_energysteps

protected

dump energy to file at steps time

Definition at line 201 of file IncNavierStokes.h.

◆ m_equationType

EquationType Nektar::IncNavierStokes::m_equationType

protected

equation type;

Definition at line 204 of file IncNavierStokes.h.

Referenced by Nektar::VelocityCorrectionScheme::SetUpExtrapolation(), Nektar::CoupledLinearNS::SolveLinearNS(), Nektar::CoupledLinearNS::v_DoInitialise(), Nektar::CoupledLinearNS::v_DoSolve(), v_InitObject(), and Nektar::CoupledLinearNS::v_InitObject().

◆ m_extrapolation

ExtrapolateSharedPtr Nektar::IncNavierStokes::m_extrapolation

protected

Definition at line 178 of file IncNavierStokes.h.

Referenced by Nektar::VelocityCorrectionScheme::SetUpExtrapolation(), Nektar::VelocityCorrectionScheme::SetupFlowrate(), Nektar::VelocityCorrectionScheme::SolveUnsteadyStokesSystem(), Nektar::VCSMapping::v_EvaluateAdvection_SetPressureBCs(), Nektar::VelocityCorrectionScheme::v_EvaluateAdvection_SetPressureBCs(), Nektar::VCSWeakPressure::v_GenerateSummary(), Nektar::VelocityCorrectionScheme::v_GenerateSummary(), v_GetMaxStdVelocity(), Nektar::VCSMapping::v_InitObject(), Nektar::CoupledLinearNS::v_InitObject(), v_PreIntegrate(), Nektar::VCSMapping::v_SetUpPressureForcing(), Nektar::VCSWeakPressure::v_SolvePressure(), Nektar::VCSMapping::v_SolvePressure(), and Nektar::VelocityCorrectionScheme::v_SolvePressure().

◆ m_fieldsBCToElmtID

Array<OneD, Array<OneD, int> > Nektar::IncNavierStokes::m_fieldsBCToElmtID

protected

Mapping from BCs to Elmt IDs.

Definition at line 207 of file IncNavierStokes.h.

Referenced by SetRadiationBoundaryForcing(), SetZeroNormalVelocity(), and v_InitObject().

◆ m_fieldsBCToTraceID

Array<OneD, Array<OneD, int> > Nektar::IncNavierStokes::m_fieldsBCToTraceID

protected

Mapping from BCs to Elmt Edge IDs.

Definition at line 209 of file IncNavierStokes.h.

Referenced by SetRadiationBoundaryForcing(), SetZeroNormalVelocity(), and v_InitObject().

◆ m_fieldsRadiationFactor

Array<OneD, Array<OneD, NekDouble> > Nektar::IncNavierStokes::m_fieldsRadiationFactor

protected

RHS Factor for Radiation Condition.

Definition at line 211 of file IncNavierStokes.h.

Referenced by SetRadiationBoundaryForcing(), and v_InitObject().

◆ m_forcing

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

protected

Forcing terms.

Definition at line 187 of file IncNavierStokes.h.

Referenced by AddForcing(), Nektar::CoupledLinearNS::EvaluateAdvection(), Nektar::CoupledLinearNS::Solve(), Nektar::VCSMapping::v_EvaluateAdvection_SetPressureBCs(), Nektar::VelocityCorrectionScheme::v_EvaluateAdvection_SetPressureBCs(), and v_InitObject().

◆ m_intSteps

int Nektar::IncNavierStokes::m_intSteps

protected

Number of time integration steps AND Order of extrapolation for pressure boundary conditions.

Definition at line 215 of file IncNavierStokes.h.

◆ m_kinvis

NekDouble Nektar::IncNavierStokes::m_kinvis

protected

Kinematic viscosity.

Definition at line 199 of file IncNavierStokes.h.

Referenced by Nektar::VelocityCorrectionScheme::AppendSVVFactors(), Nektar::VCSMapping::ApplyIncNSMappingForcing(), Nektar::CoupledLinearNS::Continuation(), Nektar::CoupledLinearNS::EvaluateNewtonRHS(), Nektar::CoupledLinearNS::SetUpCoupledMatrix(), Nektar::VelocityCorrectionScheme::SetUpSVV(), SetUpWomersley(), Nektar::CoupledLinearNS::SolveSteadyNavierStokes(), Nektar::VelocityCorrectionScheme::SolveUnsteadyStokesSystem(), Nektar::VCSMapping::v_DoInitialise(), Nektar::VelocityCorrectionScheme::v_DoInitialise(), Nektar::CoupledLinearNS::v_DoInitialise(), Nektar::CoupledLinearNS::v_DoSolve(), Nektar::VCSMapping::v_EvaluateAdvection_SetPressureBCs(), Nektar::VelocityCorrectionScheme::v_EvaluateAdvection_SetPressureBCs(), Nektar::VelocityCorrectionScheme::v_InitObject(), v_InitObject(), Nektar::VCSMapping::v_SetUpPressureForcing(), Nektar::VCSMapping::v_SetUpViscousForcing(), Nektar::VCSWeakPressure::v_SolvePressure(), Nektar::VelocityCorrectionScheme::v_SolvePressure(), and Nektar::VCSMapping::v_SolveViscous().

◆ m_mdlFile

std::ofstream Nektar::IncNavierStokes::m_mdlFile

protected

modal energy file

Definition at line 181 of file IncNavierStokes.h.

◆ m_nConvectiveFields

int Nektar::IncNavierStokes::m_nConvectiveFields

protected

Number of fields to be convected;.

Definition at line 190 of file IncNavierStokes.h.

◆ m_pressure

MultiRegions::ExpListSharedPtr Nektar::IncNavierStokes::m_pressure

protected

Pointer to field holding pressure field.

Definition at line 197 of file IncNavierStokes.h.

Referenced by Nektar::CoupledLinearNS::SetUpCoupledMatrix(), Nektar::VelocityCorrectionScheme::SetUpExtrapolation(), Nektar::VelocityCorrectionScheme::SetupFlowrate(), Nektar::CoupledLinearNS::SolveLinearNS(), Nektar::VCSMapping::v_DoInitialise(), Nektar::VCSMapping::v_EvaluateAdvection_SetPressureBCs(), Nektar::VelocityCorrectionScheme::v_EvaluateAdvection_SetPressureBCs(), Nektar::VelocityCorrectionScheme::v_InitObject(), Nektar::VCSMapping::v_InitObject(), Nektar::CoupledLinearNS::v_InitObject(), Nektar::CoupledLinearNS::v_Output(), Nektar::VCSMapping::v_SetUpViscousForcing(), Nektar::VelocityCorrectionScheme::v_SetUpViscousForcing(), Nektar::VCSWeakPressure::v_SolvePressure(), Nektar::VCSMapping::v_SolvePressure(), and Nektar::VelocityCorrectionScheme::v_SolvePressure().

◆ m_SmoothAdvection

bool Nektar::IncNavierStokes::m_SmoothAdvection

protected

bool to identify if advection term smoothing is requested

Definition at line 184 of file IncNavierStokes.h.

Referenced by Nektar::VCSMapping::v_EvaluateAdvection_SetPressureBCs(), Nektar::VelocityCorrectionScheme::v_EvaluateAdvection_SetPressureBCs(), and Nektar::VelocityCorrectionScheme::v_InitObject().

◆ m_velocity

Array<OneD, int> Nektar::IncNavierStokes::m_velocity

protected

int which identifies which components of m_fields contains the velocity (u,v,w);

Definition at line 194 of file IncNavierStokes.h.

◆ m_womersleyParams

std::map<int, std::map<int,WomersleyParamsSharedPtr> > Nektar::IncNavierStokes::m_womersleyParams

protected

Womersley parameters if required.

Definition at line 247 of file IncNavierStokes.h.

Referenced by SetUpWomersley(), SetWomersleyBoundary(), and v_InitObject().

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ ~IncNavierStokes()

◆ IncNavierStokes()

Member Function Documentation

◆ AddForcing()

◆ EvaluateAdvectionTerms()

◆ GetDensity()

◆ GetEquationType()

◆ GetNConvectiveFields()

◆ GetPressure()

◆ GetVelocity() [1/2]

◆ GetVelocity() [2/2]

◆ HasConstantDensity()

◆ SetBoundaryConditions()

◆ SetRadiationBoundaryForcing()

◆ SetUpWomersley()

◆ SetWomersleyBoundary()

◆ SetZeroNormalVelocity()

◆ v_GetForceDimension()

◆ v_GetMaxStdVelocity()

◆ v_GetPressure()

◆ v_InitObject()

◆ v_PreIntegrate()

◆ v_TransCoeffToPhys()

◆ v_TransPhysToCoeff()

◆ WriteModalEnergy()

Member Data Documentation

◆ m_energysteps

◆ m_equationType

◆ m_extrapolation

◆ m_fieldsBCToElmtID

◆ m_fieldsBCToTraceID

◆ m_fieldsRadiationFactor

◆ m_forcing

◆ m_intSteps

◆ m_kinvis

◆ m_mdlFile

◆ m_nConvectiveFields

◆ m_pressure

◆ m_SmoothAdvection

◆ m_velocity

◆ m_womersleyParams