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Nektar::UnsteadyAdvection Class Reference

#include <UnsteadyAdvection.h>

Inheritance diagram for Nektar::UnsteadyAdvection:
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Collaboration diagram for Nektar::UnsteadyAdvection:
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Public Member Functions

virtual ~UnsteadyAdvection ()
 Destructor. More...
 
- Public Member Functions inherited from Nektar::SolverUtils::AdvectionSystem
SOLVER_UTILS_EXPORT AdvectionSystem (const LibUtilities::SessionReaderSharedPtr &pSession)
 
virtual SOLVER_UTILS_EXPORT ~AdvectionSystem ()
 
AdvectionSharedPtr GetAdvObject ()
 Returns the advection object held by this instance. More...
 
- 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 >
boost::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 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 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. More...
 
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. More...
 
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. More...
 
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. More...
 
SOLVER_UTILS_EXPORT void InitialiseBaseFlow (Array< OneD, Array< OneD, NekDouble > > &base)
 Perform initialisation of the base flow. 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, NekDoubleErrorExtraPoints (unsigned int field)
 Compute error (L2 and L_inf) over an larger set of quadrature points return [L2 Linf]. More...
 
SOLVER_UTILS_EXPORT void WeakAdvectionGreensDivergenceForm (const Array< OneD, Array< OneD, NekDouble > > &F, Array< OneD, NekDouble > &outarray)
 Compute the inner product $ (\nabla \phi \cdot F) $. More...
 
SOLVER_UTILS_EXPORT void WeakAdvectionDivergenceForm (const Array< OneD, Array< OneD, NekDouble > > &F, Array< OneD, NekDouble > &outarray)
 Compute the inner product $ (\phi, \nabla \cdot F) $. More...
 
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) $. More...
 
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. More...
 
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. More...
 
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. 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 ScanForHistoryPoints ()
 Builds map of which element holds each history point. More...
 
SOLVER_UTILS_EXPORT void WriteHistoryData (std::ostream &out)
 Probe each history point and write to 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::FieldMetaDataMapUpdateFieldMetaDataMap ()
 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 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. More...
 
virtual SOLVER_UTILS_EXPORT bool v_NegatedOp ()
 Virtual function to identify if operator is negated in DoSolve. More...
 

Static Public Member Functions

static SolverUtils::EquationSystemSharedPtr create (const LibUtilities::SessionReaderSharedPtr &pSession)
 Creates an instance of this class. More...
 

Static Public Attributes

static std::string className
 Name of class. More...
 

Protected Member Functions

 UnsteadyAdvection (const LibUtilities::SessionReaderSharedPtr &pSession)
 Session reader. More...
 
void GetFluxVector (const Array< OneD, Array< OneD, NekDouble > > &physfield, Array< OneD, Array< OneD, Array< OneD, NekDouble > > > &flux)
 Evaluate the flux at each solution point. More...
 
void GetFluxVectorDeAlias (const Array< OneD, Array< OneD, NekDouble > > &physfield, Array< OneD, Array< OneD, Array< OneD, NekDouble > > > &flux)
 Evaluate the flux at each solution point using dealiasing. More...
 
void DoOdeRhs (const Array< OneD, const Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &outarray, const NekDouble time)
 Compute the RHS. More...
 
void DoOdeProjection (const Array< OneD, const Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &outarray, const NekDouble time)
 Compute the projection. More...
 
Array< OneD, NekDouble > & GetNormalVelocity ()
 Get the normal velocity. More...
 
virtual void v_InitObject ()
 Initialise the object. More...
 
virtual void v_GenerateSummary (SolverUtils::SummaryList &s)
 Print Summary. More...
 
- Protected Member Functions inherited from Nektar::SolverUtils::UnsteadySystem
SOLVER_UTILS_EXPORT UnsteadySystem (const LibUtilities::SessionReaderSharedPtr &pSession)
 Initialises UnsteadySystem class members. More...
 
SOLVER_UTILS_EXPORT NekDouble MaxTimeStepEstimator ()
 Get the maximum timestep estimator for cfl control. More...
 
virtual SOLVER_UTILS_EXPORT void v_DoSolve ()
 Solves an unsteady problem. More...
 
virtual SOLVER_UTILS_EXPORT void v_DoInitialise ()
 Sets up initial conditions. More...
 
virtual SOLVER_UTILS_EXPORT void v_AppendOutput1D (Array< OneD, Array< OneD, NekDouble > > &solution1D)
 Print the solution at each solution point in a txt file. More...
 
virtual SOLVER_UTILS_EXPORT void v_NumericalFlux (Array< OneD, Array< OneD, NekDouble > > &physfield, Array< OneD, Array< OneD, NekDouble > > &numflux)
 
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. More...
 
virtual SOLVER_UTILS_EXPORT bool v_PreIntegrate (int step)
 
virtual SOLVER_UTILS_EXPORT bool v_PostIntegrate (int step)
 
virtual SOLVER_UTILS_EXPORT bool v_SteadyStateCheck (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. More...
 
int nocase_cmp (const string &s1, const string &s2)
 
SOLVER_UTILS_EXPORT void SetBoundaryConditions (NekDouble time)
 Evaluates the boundary conditions at the given time. More...
 
virtual SOLVER_UTILS_EXPORT NekDouble v_LinfError (unsigned int field, const Array< OneD, NekDouble > &exactsoln=NullNekDouble1DArray)
 Virtual function for the L_inf error computation between fields and a given exact solution. More...
 
virtual SOLVER_UTILS_EXPORT NekDouble v_L2Error (unsigned int field, const Array< OneD, NekDouble > &exactsoln=NullNekDouble1DArray, bool Normalised=false)
 Virtual function for the L_2 error computation between fields and a given exact solution. More...
 
virtual SOLVER_UTILS_EXPORT void v_TransCoeffToPhys ()
 Virtual function for transformation to physical space. More...
 
virtual SOLVER_UTILS_EXPORT void v_TransPhysToCoeff ()
 Virtual function for transformation to coefficient space. More...
 
virtual SOLVER_UTILS_EXPORT void v_SetInitialConditions (NekDouble initialtime=0.0, bool dumpInitialConditions=true, const int domain=0)
 
virtual SOLVER_UTILS_EXPORT void v_EvaluateExactSolution (unsigned int field, Array< OneD, NekDouble > &outfield, const NekDouble time)
 
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

SolverUtils::RiemannSolverSharedPtr m_riemannSolver
 
Array< OneD, Array< OneD, NekDouble > > m_velocity
 Advection velocity. More...
 
Array< OneD, NekDoublem_traceVn
 
int m_planeNumber
 
- Protected Attributes inherited from Nektar::SolverUtils::AdvectionSystem
SolverUtils::AdvectionSharedPtr m_advObject
 Advection term. More...
 
- Protected Attributes inherited from Nektar::SolverUtils::UnsteadySystem
int m_infosteps
 Number of time steps between outputting status information. More...
 
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...
 
std::vector< int > m_intVariables
 
std::vector< FilterSharedPtrm_filters
 
- Protected Attributes inherited from Nektar::SolverUtils::EquationSystem
LibUtilities::CommSharedPtr m_comm
 Communicator. More...
 
LibUtilities::SessionReaderSharedPtr m_session
 The session reader. More...
 
LibUtilities::FieldIOSharedPtr m_fld
 Field input/output. More...
 
map< std::string, Array< OneD, Array< OneD, float > > > m_interpWeights
 Map of the interpolation weights for a specific filename. More...
 
map< std::string, Array< OneD, Array< OneD, unsigned int > > > m_interpInds
 Map of the interpolation indices for a specific filename. More...
 
Array< OneD, MultiRegions::ExpListSharedPtrm_fields
 Array holding all dependent variables. More...
 
Array< OneD, MultiRegions::ExpListSharedPtrm_base
 Base fields. More...
 
Array< OneD, MultiRegions::ExpListSharedPtrm_derivedfields
 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...
 
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_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, Array< OneD, Array< OneD, NekDouble > > > m_gradtan
 1 x nvariable x nq More...
 
Array< OneD, Array< OneD, Array< OneD, NekDouble > > > m_tanbasis
 2 x m_spacedim x nq 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...
 
int m_NumMode
 Mode to use in case of single mode analysis. More...
 

Private Attributes

NekDouble m_waveFreq
 

Friends

class MemoryManager< UnsteadyAdvection >
 

Additional Inherited Members

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

Detailed Description

Definition at line 45 of file UnsteadyAdvection.h.

Constructor & Destructor Documentation

Nektar::UnsteadyAdvection::~UnsteadyAdvection ( )
virtual

Destructor.

Unsteady linear advection equation destructor.

Definition at line 162 of file UnsteadyAdvection.cpp.

163  {
164  }
Nektar::UnsteadyAdvection::UnsteadyAdvection ( const LibUtilities::SessionReaderSharedPtr pSession)
protected

Session reader.

Definition at line 46 of file UnsteadyAdvection.cpp.

References m_planeNumber.

48  : UnsteadySystem(pSession),
49  AdvectionSystem(pSession)
50  {
51  m_planeNumber = 0;
52  }
SOLVER_UTILS_EXPORT AdvectionSystem(const LibUtilities::SessionReaderSharedPtr &pSession)
SOLVER_UTILS_EXPORT UnsteadySystem(const LibUtilities::SessionReaderSharedPtr &pSession)
Initialises UnsteadySystem class members.

Member Function Documentation

static SolverUtils::EquationSystemSharedPtr Nektar::UnsteadyAdvection::create ( const LibUtilities::SessionReaderSharedPtr pSession)
inlinestatic

Creates an instance of this class.

Definition at line 51 of file UnsteadyAdvection.h.

References Nektar::MemoryManager< DataType >::AllocateSharedPtr().

52  {
55  p->InitObject();
56  return p;
57  }
static boost::shared_ptr< DataType > AllocateSharedPtr()
Allocate a shared pointer from the memory pool.
boost::shared_ptr< EquationSystem > EquationSystemSharedPtr
A shared pointer to an EquationSystem object.
void Nektar::UnsteadyAdvection::DoOdeProjection ( const Array< OneD, const Array< OneD, NekDouble > > &  inarray,
Array< OneD, Array< OneD, NekDouble > > &  outarray,
const NekDouble  time 
)
protected

Compute the projection.

Compute the projection for the linear advection equation.

Parameters
inarrayGiven fields.
outarrayCalculated solution.
timeTime.

Definition at line 234 of file UnsteadyAdvection.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().

238  {
239  // Counter variable
240  int i;
241 
242  // Number of fields (variables of the problem)
243  int nVariables = inarray.num_elements();
244 
245  // Set the boundary conditions
246  SetBoundaryConditions(time);
247 
248  // Switch on the projection type (Discontinuous or Continuous)
249  switch(m_projectionType)
250  {
251  // Discontinuous projection
253  {
254  // Number of quadrature points
255  int nQuadraturePts = GetNpoints();
256 
257  // Just copy over array
258  for(i = 0; i < nVariables; ++i)
259  {
260  Vmath::Vcopy(nQuadraturePts, inarray[i], 1, outarray[i], 1);
261  }
262  break;
263  }
264 
265  // Continuous projection
268  {
269  Array<OneD, NekDouble> coeffs(m_fields[0]->GetNcoeffs(),0.0);
270  for(i = 0; i < nVariables; ++i)
271  {
272  m_fields[i]->FwdTrans(inarray[i], coeffs);
273  m_fields[i]->BwdTrans_IterPerExp(coeffs, outarray[i]);
274  }
275  break;
276  }
277 
278  default:
279  ASSERTL0(false,"Unknown projection scheme");
280  break;
281  }
282  }
#define ASSERTL0(condition, msg)
Definition: ErrorUtil.hpp:161
enum MultiRegions::ProjectionType m_projectionType
Type of projection; e.g continuous or discontinuous.
SOLVER_UTILS_EXPORT void SetBoundaryConditions(NekDouble time)
Evaluates the boundary conditions at the given time.
SOLVER_UTILS_EXPORT int GetNpoints()
Array< OneD, MultiRegions::ExpListSharedPtr > m_fields
Array holding all dependent variables.
SOLVER_UTILS_EXPORT int GetNcoeffs()
void Vcopy(int n, const T *x, const int incx, T *y, const int incy)
Definition: Vmath.cpp:1038
void Nektar::UnsteadyAdvection::DoOdeRhs ( const Array< OneD, const Array< OneD, NekDouble > > &  inarray,
Array< OneD, Array< OneD, NekDouble > > &  outarray,
const NekDouble  time 
)
protected

Compute the RHS.

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

Parameters
inarrayGiven fields.
outarrayCalculated solution.
timeTime.

Definition at line 202 of file UnsteadyAdvection.cpp.

References Nektar::SolverUtils::EquationSystem::GetNpoints(), Nektar::SolverUtils::AdvectionSystem::m_advObject, Nektar::SolverUtils::EquationSystem::m_fields, m_velocity, and Vmath::Neg().

Referenced by v_InitObject().

206  {
207  // Counter variable
208  int i;
209 
210  // Number of fields (variables of the problem)
211  int nVariables = inarray.num_elements();
212 
213  // Number of solution points
214  int nSolutionPts = GetNpoints();
215 
216  // RHS computation using the new advection base class
217  m_advObject->Advect(nVariables, m_fields, m_velocity, inarray,
218  outarray, time);
219 
220  // Negate the RHS
221  for (i = 0; i < nVariables; ++i)
222  {
223  Vmath::Neg(nSolutionPts, outarray[i], 1);
224  }
225  }
SolverUtils::AdvectionSharedPtr m_advObject
Advection term.
Array< OneD, Array< OneD, NekDouble > > m_velocity
Advection velocity.
void Neg(int n, T *x, const int incx)
Negate x = -x.
Definition: Vmath.cpp:382
SOLVER_UTILS_EXPORT int GetNpoints()
Array< OneD, MultiRegions::ExpListSharedPtr > m_fields
Array holding all dependent variables.
void Nektar::UnsteadyAdvection::GetFluxVector ( const Array< OneD, Array< OneD, NekDouble > > &  physfield,
Array< OneD, Array< OneD, Array< OneD, NekDouble > > > &  flux 
)
protected

Evaluate the flux at each solution point.

Return the flux vector for the linear advection equation.

Parameters
iComponent of the flux vector to calculate.
physfieldFields.
fluxResulting flux.

Definition at line 291 of file UnsteadyAdvection.cpp.

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

Referenced by v_InitObject().

294  {
295  ASSERTL1(flux[0].num_elements() == m_velocity.num_elements(),
296  "Dimension of flux array and velocity array do not match");
297 
298  int i , j;
299  int nq = physfield[0].num_elements();
300 
301  for (i = 0; i < flux.num_elements(); ++i)
302  {
303  for (j = 0; j < flux[0].num_elements(); ++j)
304  {
305  Vmath::Vmul(nq, physfield[i], 1, m_velocity[j], 1,
306  flux[i][j], 1);
307  }
308  }
309  }
Array< OneD, Array< OneD, NekDouble > > m_velocity
Advection velocity.
#define ASSERTL1(condition, msg)
Assert Level 1 – Debugging which is used whether in FULLDEBUG or DEBUG compilation mode...
Definition: ErrorUtil.hpp:191
void Vmul(int n, const T *x, const int incx, const T *y, const int incy, T *z, const int incz)
Multiply vector z = x*y.
Definition: Vmath.cpp:169
void Nektar::UnsteadyAdvection::GetFluxVectorDeAlias ( const Array< OneD, Array< OneD, NekDouble > > &  physfield,
Array< OneD, Array< OneD, Array< OneD, NekDouble > > > &  flux 
)
protected

Evaluate the flux at each solution point using dealiasing.

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

Parameters
iComponent of the flux vector to calculate.
physfieldFields.
fluxResulting flux.

Definition at line 319 of file UnsteadyAdvection.cpp.

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

Referenced by v_InitObject().

322  {
323  ASSERTL1(flux[0].num_elements() == m_velocity.num_elements(),
324  "Dimension of flux array and velocity array do not match");
325 
326  int i, j;
327  int nq = physfield[0].num_elements();
328  int nVariables = physfield.num_elements();
329 
330  // Factor to rescale 1d points in dealiasing
331  NekDouble OneDptscale = 2;
332 
334  advVel_plane(m_velocity.num_elements());
335 
336  // Get number of points to dealias a cubic non-linearity
337  nq = m_fields[0]->Get1DScaledTotPoints(OneDptscale);
338 
339  // Initialisation of higher-space variables
340  Array<OneD, Array<OneD, NekDouble> >physfieldInterp(nVariables);
342  Array<OneD, Array<OneD, Array<OneD, NekDouble> > >fluxInterp(nVariables);
343 
344  // Interpolation to higher space of physfield
345  for (i = 0; i < nVariables; ++i)
346  {
347  physfieldInterp[i] = Array<OneD, NekDouble>(nq);
348  fluxInterp[i] = Array<OneD, Array<OneD, NekDouble> >(m_expdim);
349  for (j = 0; j < m_expdim; ++j)
350  {
351  fluxInterp[i][j] = Array<OneD, NekDouble>(nq);
352  }
353 
354  m_fields[0]->PhysInterp1DScaled(
355  OneDptscale, physfield[i], physfieldInterp[i]);
356  }
357 
358  // Interpolation to higher space of velocity
359  for (j = 0; j < m_expdim; ++j)
360  {
361  velocityInterp[j] = Array<OneD, NekDouble>(nq);
362 
363  m_fields[0]->PhysInterp1DScaled(
364  OneDptscale, m_velocity[j], velocityInterp[j]);
365  }
366 
367  // Evaluation of flux vector in the higher space
368  for (i = 0; i < flux.num_elements(); ++i)
369  {
370  for (j = 0; j < flux[0].num_elements(); ++j)
371  {
372  Vmath::Vmul(nq, physfieldInterp[i], 1, velocityInterp[j], 1,
373  fluxInterp[i][j], 1);
374  }
375  }
376 
377  // Galerkin project solution back to original space
378  for (i = 0; i < nVariables; ++i)
379  {
380  for (j = 0; j < m_spacedim; ++j)
381  {
382  m_fields[0]->PhysGalerkinProjection1DScaled(
383  OneDptscale, fluxInterp[i][j], flux[i][j]);
384  }
385  }
386  }
int m_expdim
Expansion dimension.
Array< OneD, Array< OneD, NekDouble > > m_velocity
Advection velocity.
int m_spacedim
Spatial dimension (>= expansion dim).
double NekDouble
Array< OneD, MultiRegions::ExpListSharedPtr > m_fields
Array holding all dependent variables.
#define ASSERTL1(condition, msg)
Assert Level 1 – Debugging which is used whether in FULLDEBUG or DEBUG compilation mode...
Definition: ErrorUtil.hpp:191
void Vmul(int n, const T *x, const int incx, const T *y, const int incy, T *z, const int incz)
Multiply vector z = x*y.
Definition: Vmath.cpp:169
Array< OneD, NekDouble > & Nektar::UnsteadyAdvection::GetNormalVelocity ( )
protected

Get the normal velocity.

Get the normal velocity for the linear advection equation.

Definition at line 169 of file UnsteadyAdvection.cpp.

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

Referenced by v_InitObject().

170  {
171  // Number of trace (interface) points
172  int i;
173  int nTracePts = GetTraceNpoints();
174 
175  // Auxiliary variable to compute the normal velocity
176  Array<OneD, NekDouble> tmp(nTracePts);
177 
178  // Reset the normal velocity
179  Vmath::Zero(nTracePts, m_traceVn, 1);
180 
181  for (i = 0; i < m_velocity.num_elements(); ++i)
182  {
183  m_fields[0]->ExtractTracePhys(m_velocity[i], tmp);
184 
185  Vmath::Vvtvp(nTracePts,
186  m_traceNormals[i], 1,
187  tmp, 1,
188  m_traceVn, 1,
189  m_traceVn, 1);
190  }
191 
192  return m_traceVn;
193  }
void Vvtvp(int n, const T *w, const int incw, const T *x, const int incx, const T *y, const int incy, T *z, const int incz)
vvtvp (vector times vector plus vector): z = w*x + y
Definition: Vmath.cpp:428
Array< OneD, Array< OneD, NekDouble > > m_traceNormals
Array holding trace normals for DG simulations in the forwards direction.
Array< OneD, Array< OneD, NekDouble > > m_velocity
Advection velocity.
Array< OneD, NekDouble > m_traceVn
Array< OneD, MultiRegions::ExpListSharedPtr > m_fields
Array holding all dependent variables.
SOLVER_UTILS_EXPORT int GetTraceNpoints()
void Zero(int n, T *x, const int incx)
Zero vector.
Definition: Vmath.cpp:359
void Nektar::UnsteadyAdvection::v_GenerateSummary ( SolverUtils::SummaryList s)
protectedvirtual

Print Summary.

Reimplemented from Nektar::SolverUtils::UnsteadySystem.

Definition at line 388 of file UnsteadyAdvection.cpp.

389  {
390  AdvectionSystem::v_GenerateSummary(s);
391  }
void Nektar::UnsteadyAdvection::v_InitObject ( )
protectedvirtual

Initialise the object.

Initialisation object for the unsteady linear advection equation.

Reimplemented from Nektar::SolverUtils::AdvectionSystem.

Definition at line 57 of file UnsteadyAdvection.cpp.

References ASSERTL0, Nektar::LibUtilities::NekFactory< tKey, tBase, >::CreateInstance(), Nektar::LibUtilities::TimeIntegrationSchemeOperators::DefineOdeRhs(), Nektar::LibUtilities::TimeIntegrationSchemeOperators::DefineProjection(), DoOdeProjection(), DoOdeRhs(), Nektar::MultiRegions::eDiscontinuous, Nektar::MultiRegions::eGalerkin, Nektar::SolverUtils::EquationSystem::EvaluateFunction(), Nektar::SolverUtils::GetAdvectionFactory(), GetFluxVector(), GetFluxVectorDeAlias(), GetNormalVelocity(), Nektar::SolverUtils::GetRiemannSolverFactory(), Nektar::SolverUtils::EquationSystem::GetTraceNpoints(), Nektar::SolverUtils::AdvectionSystem::m_advObject, Nektar::SolverUtils::UnsteadySystem::m_explicitAdvection, Nektar::SolverUtils::EquationSystem::m_fields, Nektar::SolverUtils::UnsteadySystem::m_homoInitialFwd, Nektar::SolverUtils::UnsteadySystem::m_ode, Nektar::SolverUtils::EquationSystem::m_projectionType, m_riemannSolver, Nektar::SolverUtils::EquationSystem::m_session, Nektar::SolverUtils::EquationSystem::m_spacedim, Nektar::SolverUtils::EquationSystem::m_specHP_dealiasing, m_traceVn, m_velocity, and m_waveFreq.

58  {
59  // Call to the initialisation object of UnsteadySystem
60  AdvectionSystem::v_InitObject();
61 
62  m_session->LoadParameter("wavefreq", m_waveFreq, 0.0);
63  // Read the advection velocities from session file
64 
65  std::vector<std::string> vel;
66  vel.push_back("Vx");
67  vel.push_back("Vy");
68  vel.push_back("Vz");
69 
70  // Resize the advection velocities vector to dimension of the problem
71  vel.resize(m_spacedim);
72 
73  // Store in the global variable m_velocity the advection velocities
75  EvaluateFunction(vel, m_velocity, "AdvectionVelocity");
76 
77  // Type of advection class to be used
78  switch(m_projectionType)
79  {
80  // Continuous field
82  {
83  string advName;
84  m_session->LoadSolverInfo(
85  "AdvectionType", advName, "NonConservative");
87  GetAdvectionFactory().CreateInstance(advName, advName);
89  {
90  m_advObject->SetFluxVector(
92  }
93  else
94  {
95  m_advObject->SetFluxVector(
97  }
98  break;
99  }
100  // Discontinuous field
102  {
103  // Do not forwards transform initial condition
104  m_homoInitialFwd = false;
105 
106  // Define the normal velocity fields
107  if (m_fields[0]->GetTrace())
108  {
110  }
111 
112  string advName;
113  string riemName;
114  m_session->LoadSolverInfo(
115  "AdvectionType", advName, "WeakDG");
117  GetAdvectionFactory().CreateInstance(advName, advName);
119  {
120  m_advObject->SetFluxVector(
122  }
123  else
124  {
125  m_advObject->SetFluxVector(
127  }
128  m_session->LoadSolverInfo(
129  "UpwindType", riemName, "Upwind");
132  m_riemannSolver->SetScalar(
134 
135  m_advObject->SetRiemannSolver(m_riemannSolver);
136  m_advObject->InitObject(m_session, m_fields);
137  break;
138  }
139  default:
140  {
141  ASSERTL0(false, "Unsupported projection type.");
142  break;
143  }
144  }
145 
146  // If explicit it computes RHS and PROJECTION for the time integration
148  {
151  }
152  // Otherwise it gives an error (no implicit integration)
153  else
154  {
155  ASSERTL0(false, "Implicit unsteady Advection not set up.");
156  }
157  }
void DoOdeProjection(const Array< OneD, const Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &outarray, const NekDouble time)
Compute the projection.
#define ASSERTL0(condition, msg)
Definition: ErrorUtil.hpp:161
bool m_homoInitialFwd
Flag to determine if simulation should start in homogeneous forward transformed state.
tBaseSharedPtr CreateInstance(tKey idKey BOOST_PP_COMMA_IF(MAX_PARAM) BOOST_PP_ENUM_BINARY_PARAMS(MAX_PARAM, tParam, x))
Create an instance of the class referred to by idKey.
Definition: NekFactory.hpp:162
SolverUtils::AdvectionSharedPtr m_advObject
Advection term.
LibUtilities::TimeIntegrationSchemeOperators m_ode
The time integration scheme operators to use.
void GetFluxVector(const Array< OneD, Array< OneD, NekDouble > > &physfield, Array< OneD, Array< OneD, Array< OneD, NekDouble > > > &flux)
Evaluate the flux at each solution point.
enum MultiRegions::ProjectionType m_projectionType
Type of projection; e.g continuous or discontinuous.
bool m_specHP_dealiasing
Flag to determine if dealisising is usde for the Spectral/hp element discretisation.
void DefineProjection(FuncPointerT func, ObjectPointerT obj)
bool m_explicitAdvection
Indicates if explicit or implicit treatment of advection is used.
void DefineOdeRhs(FuncPointerT func, ObjectPointerT obj)
Array< OneD, Array< OneD, NekDouble > > m_velocity
Advection velocity.
void DoOdeRhs(const Array< OneD, const Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &outarray, const NekDouble time)
Compute the RHS.
RiemannSolverFactory & GetRiemannSolverFactory()
int m_spacedim
Spatial dimension (>= expansion dim).
AdvectionFactory & GetAdvectionFactory()
Gets the factory for initialising advection objects.
Definition: Advection.cpp:46
SolverUtils::RiemannSolverSharedPtr m_riemannSolver
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.
void GetFluxVectorDeAlias(const Array< OneD, Array< OneD, NekDouble > > &physfield, Array< OneD, Array< OneD, Array< OneD, NekDouble > > > &flux)
Evaluate the flux at each solution point using dealiasing.
Array< OneD, NekDouble > m_traceVn
Array< OneD, MultiRegions::ExpListSharedPtr > m_fields
Array holding all dependent variables.
LibUtilities::SessionReaderSharedPtr m_session
The session reader.
SOLVER_UTILS_EXPORT int GetTraceNpoints()
Array< OneD, NekDouble > & GetNormalVelocity()
Get the normal velocity.

Friends And Related Function Documentation

friend class MemoryManager< UnsteadyAdvection >
friend

Definition at line 48 of file UnsteadyAdvection.h.

Member Data Documentation

string Nektar::UnsteadyAdvection::className
static
Initial value:
RegisterCreatorFunction("UnsteadyAdvection",
"Unsteady Advection equation.")

Name of class.

Definition at line 59 of file UnsteadyAdvection.h.

int Nektar::UnsteadyAdvection::m_planeNumber
protected

Definition at line 73 of file UnsteadyAdvection.h.

Referenced by UnsteadyAdvection().

SolverUtils::RiemannSolverSharedPtr Nektar::UnsteadyAdvection::m_riemannSolver
protected

Definition at line 65 of file UnsteadyAdvection.h.

Referenced by v_InitObject().

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

Definition at line 69 of file UnsteadyAdvection.h.

Referenced by GetNormalVelocity(), and v_InitObject().

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

Advection velocity.

Definition at line 68 of file UnsteadyAdvection.h.

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

NekDouble Nektar::UnsteadyAdvection::m_waveFreq
private

Definition at line 110 of file UnsteadyAdvection.h.

Referenced by v_InitObject().