Class for iterative elastic system, in which linear elasticity is applied in substeps to attain a large deformation. More...

#include <IterativeElasticSystem.h>

Inheritance diagram for Nektar::IterativeElasticSystem:

[legend]

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

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

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

Static Public Attributes inherited from Nektar::LinearElasticSystem
static std::string	className
	Name of class. More...

Protected Member Functions
	IterativeElasticSystem (const LibUtilities::SessionReaderSharedPtr &pSession, const SpatialDomains::MeshGraphSharedPtr &pGraph)

virtual void	v_InitObject (bool DeclareFields=true) override
	Set up the linear elasticity system. More...

virtual void	v_GenerateSummary (SolverUtils::SummaryList &s) override
	Generate summary at runtime. More...

virtual void	v_DoSolve () override
	Solve elliptic linear elastic system. More...

void	WriteGeometry (const int i)
	Write out a file in serial or directory in parallel containing new mesh geometry. More...

Protected Member Functions inherited from Nektar::LinearElasticSystem
	LinearElasticSystem (const LibUtilities::SessionReaderSharedPtr &pSession, const SpatialDomains::MeshGraphSharedPtr &pGraph)
	Default constructor. More...

virtual void	v_InitObject (bool DeclareFields=true) override
	Set up the linear elasticity system. More...

virtual void	v_GenerateSummary (SolverUtils::SummaryList &s) override
	Generate summary at runtime. More...

virtual void	v_DoSolve () override
	Solve elliptic linear elastic system. More...

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

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

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

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

virtual SOLVER_UTILS_EXPORT void	v_DoSolve ()
	Virtual function for solve implementation. More...

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

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

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

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

virtual SOLVER_UTILS_EXPORT void	v_GenerateSummary (SummaryList &l)
	Virtual function for generating summary information. More...

virtual SOLVER_UTILS_EXPORT void	v_SetInitialConditions (NekDouble initialtime=0.0, bool dumpInitialConditions=true, const int domain=0)

virtual SOLVER_UTILS_EXPORT void	v_EvaluateExactSolution (unsigned int field, Array< OneD, NekDouble > &outfield, const NekDouble time)

virtual SOLVER_UTILS_EXPORT void	v_Output (void)

virtual SOLVER_UTILS_EXPORT MultiRegions::ExpListSharedPtr	v_GetPressure (void)

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

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

Protected Attributes
int	m_numSteps
	Number of steps to split deformation across. More...

bool	m_repeatBCs
	Flag determining whether to repeat boundary conditions. More...

Array< OneD, Array< OneD, Array< OneD, NekDouble > > >	m_savedBCs
	Storage for boundary conditions. More...

std::vector< int >	m_toDeform
	Vector of boundary regions to deform. More...

Protected Attributes inherited from Nektar::LinearElasticSystem
NekDouble	m_nu
	Poisson ratio. More...

NekDouble	m_E
	Young's modulus. More...

NekDouble	m_beta
	Parameter dictating amount of thermal stress to add. More...

CoupledAssemblyMapSharedPtr	m_assemblyMap
	Assembly map for the coupled (u,v,w) system. More...

DNekScalBlkMatSharedPtr	m_schurCompl
	Schur complement boundary-boundary matrix. More...

DNekScalBlkMatSharedPtr	m_BinvD
	Matrix of elemental \( B^{-1}D \) components. More...

DNekScalBlkMatSharedPtr	m_C
	Matrix of elemental \( C \) components. More...

DNekScalBlkMatSharedPtr	m_Dinv
	Matrix of elemental \( D^{-1} \) components. More...

Array< OneD, Array< OneD, unsigned int > >	m_bmap
	Boundary maps for each of the fields. More...

Array< OneD, Array< OneD, unsigned int > >	m_imap
	Interior maps for each of the fields. More...

Array< OneD, Array< OneD, NekDouble > >	m_temperature
	Storage for the temperature terms. More...

Array< OneD, Array< OneD, Array< OneD, NekDouble > > >	m_stress
	Storage for the thermal stress terms. More...

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

bool	m_verbose

LibUtilities::SessionReaderSharedPtr	m_session
	The session reader. More...

std::map< std::string, SolverUtils::SessionFunctionSharedPtr >	m_sessionFunctions
	Map of known SessionFunctions. More...

LibUtilities::FieldIOSharedPtr	m_fld
	Field input/output. More...

Array< OneD, MultiRegions::ExpListSharedPtr >	m_fields
	Array holding all dependent variables. More...

SpatialDomains::BoundaryConditionsSharedPtr	m_boundaryConditions
	Pointer to boundary conditions object. More...

SpatialDomains::MeshGraphSharedPtr	m_graph
	Pointer to graph defining mesh. More...

std::string	m_sessionName
	Name of the session. More...

NekDouble	m_time
	Current time of simulation. More...

int	m_initialStep
	Number of the step where the simulation should begin. More...

NekDouble	m_fintime
	Finish time of the simulation. More...

NekDouble	m_timestep
	Time step size. More...

NekDouble	m_lambda
	Lambda constant in real system if one required. More...

NekDouble	m_checktime
	Time between checkpoints. More...

NekDouble	m_lastCheckTime

NekDouble	m_TimeIncrementFactor

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

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

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

int	m_infosteps
	Number of time steps between outputting status information. More...

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

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

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

int	m_expdim
	Expansion dimension. More...

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

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

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

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

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

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

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

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

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

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

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

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

boost::numeric::ublas::matrix< NekDouble >	m_movingFrameProjMat
	Projection matrix for transformation between inertial and moving. More...

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

enum HomogeneousType	m_HomogeneousType

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

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

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

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

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

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

int	m_HomoDirec
	number of homogenous directions More...

Friends
class	MemoryManager< IterativeElasticSystem >
	Class may only be instantiated through the MemoryManager. More...

Additional Inherited Members
Public Member Functions inherited from Nektar::LinearElasticSystem
void	BuildMatrixSystem ()
	Build matrix system for linear elasticity equations. More...

void	SetStaticCondBlock (const int n, const LocalRegions::ExpansionSharedPtr exp, Array< TwoD, DNekMatSharedPtr > &mat)
	Given a block matrix for an element, construct its static condensation matrices. More...

DNekMatSharedPtr	BuildLaplacianIJMatrix (const int k1, const int k2, const NekDouble scale, LocalRegions::ExpansionSharedPtr exp)
	Construct a LaplacianIJ matrix for a given expansion. More...

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

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

SOLVER_UTILS_EXPORT void	DoInitialise (bool dumpInitialConditions=true)
	Perform any initialisation necessary before solving the problem. More...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

SOLVER_UTILS_EXPORT int	GetNcoeffs ()

SOLVER_UTILS_EXPORT int	GetNcoeffs (const int eid)

SOLVER_UTILS_EXPORT int	GetNumExpModes ()

SOLVER_UTILS_EXPORT const Array< OneD, int >	GetNumExpModesPerExp ()

SOLVER_UTILS_EXPORT int	GetNvariables ()

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

SOLVER_UTILS_EXPORT int	GetTraceTotPoints ()

SOLVER_UTILS_EXPORT int	GetTraceNpoints ()

SOLVER_UTILS_EXPORT int	GetExpSize ()

SOLVER_UTILS_EXPORT int	GetPhys_Offset (int n)

SOLVER_UTILS_EXPORT int	GetCoeff_Offset (int n)

SOLVER_UTILS_EXPORT int	GetTotPoints ()

SOLVER_UTILS_EXPORT int	GetTotPoints (int n)

SOLVER_UTILS_EXPORT int	GetNpoints ()

SOLVER_UTILS_EXPORT int	GetSteps ()

SOLVER_UTILS_EXPORT NekDouble	GetTimeStep ()

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

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

SOLVER_UTILS_EXPORT void	SetSteps (const int steps)

SOLVER_UTILS_EXPORT void	ZeroPhysFields ()

SOLVER_UTILS_EXPORT void	FwdTransFields ()

SOLVER_UTILS_EXPORT void	SetModifiedBasis (const bool modbasis)

SOLVER_UTILS_EXPORT int	GetCheckpointNumber ()

SOLVER_UTILS_EXPORT void	SetCheckpointNumber (int num)

SOLVER_UTILS_EXPORT int	GetCheckpointSteps ()

SOLVER_UTILS_EXPORT void	SetCheckpointSteps (int num)

SOLVER_UTILS_EXPORT int	GetInfoSteps ()

SOLVER_UTILS_EXPORT void	SetInfoSteps (int num)

SOLVER_UTILS_EXPORT void	SetIterationNumberPIT (int num)

SOLVER_UTILS_EXPORT void	SetWindowNumberPIT (int num)

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

SOLVER_UTILS_EXPORT void	SetTime (const NekDouble time)

SOLVER_UTILS_EXPORT void	SetTimeStep (const NekDouble timestep)

SOLVER_UTILS_EXPORT void	SetInitialStep (const int step)

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

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

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

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

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

static std::string	projectionTypeLookupIds []

Detailed Description

Class for iterative elastic system, in which linear elasticity is applied in substeps to attain a large deformation.

Definition at line 50 of file IterativeElasticSystem.h.

Constructor & Destructor Documentation

◆ IterativeElasticSystem()

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

protected

Definition at line 57 of file IterativeElasticSystem.cpp.

    : LinearElasticSystem(pSession, pGraph)
{
}

Member Function Documentation

◆ create()

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

inlinestatic

Creates an instance of this class.

Definition at line 57 of file IterativeElasticSystem.h.

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

References Nektar::MemoryManager< DataType >::AllocateSharedPtr(), and CellMLToNektar.cellml_metadata::p.

◆ v_DoSolve()

void Nektar::IterativeElasticSystem::v_DoSolve ( void )

overrideprotectedvirtual

Solve elliptic linear elastic system.

The solve proceeds as follows:

Create a MultiRegions::GlobalLinSys object.
Evaluate a forcing function from the session file.
If the temperature term is enabled, evaluate this and add to forcing.
Apply Dirichlet boundary conditions.
Scatter forcing into the correct ordering according to the coupled assembly map.
Do the solve.
Scatter solution back to fields and backwards transform to physical space.

Reimplemented from Nektar::LinearElasticSystem.

Definition at line 127 of file IterativeElasticSystem.cpp.

{
    int i, j, k;
 
    // Write initial geometry for consistency/script purposes
    WriteGeometry(0);
 
    Array<OneD, Array<OneD, NekDouble>> physvals(m_fields.size());
 
    for (int i = 0; i < m_fields.size(); ++i)
    {
        physvals[i] = m_fields[i]->UpdatePhys();
    }
 
    // Now loop over desired number of steps
    for (i = 1; i <= m_numSteps; ++i)
    {
        int invalidElmtId = -1;
 
        // Perform solve for this iteration and update geometry accordingly.
        LinearElasticSystem::v_DoSolve();
        GlobalMapping::UpdateGeometry(m_graph, m_fields, physvals);
        WriteGeometry(i);
 
        // Check for invalid elements.
        for (j = 0; j < m_fields[0]->GetExpSize(); ++j)
        {
            SpatialDomains::GeomFactorsSharedPtr geomFac =
                m_fields[0]->GetExp(j)->GetGeom()->GetGeomFactors();
 
            if (!geomFac->IsValid())
            {
                invalidElmtId =
                    m_fields[0]->GetExp(j)->GetGeom()->GetGlobalID();
                break;
            }
        }
 
        m_session->GetComm()->AllReduce(invalidElmtId, LibUtilities::ReduceMax);
 
        // If we found an invalid element, exit loop without writing output.
        if (invalidElmtId >= 0)
        {
            if (m_session->GetComm()->GetRank() == 0)
            {
                cout << "- Detected negative Jacobian in element "
                     << invalidElmtId
                     << "; terminating at"
                        " step: "
                     << i << endl;
            }
 
            break;
        }
 
        if (m_session->GetComm()->GetRank() == 0)
        {
            cout << "Step: " << i << endl;
        }
 
        // Update boundary conditions
        if (m_repeatBCs)
        {
            for (j = 0; j < m_fields.size(); ++j)
            {
                string varName = m_session->GetVariable(j);
                m_fields[j]->EvaluateBoundaryConditions(m_time, varName);
            }
        }
        else
        {
            for (j = 0; j < m_fields.size(); ++j)
            {
                const Array<OneD, const MultiRegions::ExpListSharedPtr>
                    &bndCondExp = m_fields[j]->GetBndCondExpansions();
 
                for (k = 0; k < m_toDeform.size(); ++k)
                {
                    const int id      = m_toDeform[k];
                    const int nCoeffs = bndCondExp[id]->GetNcoeffs();
                    Vmath::Vcopy(nCoeffs, m_savedBCs[k][j], 1,
                                 bndCondExp[id]->UpdateCoeffs(), 1);
                }
            }
        }
    }
}

References Nektar::SolverUtils::EquationSystem::m_fields, Nektar::SolverUtils::EquationSystem::m_graph, m_numSteps, m_repeatBCs, m_savedBCs, Nektar::SolverUtils::EquationSystem::m_session, Nektar::SolverUtils::EquationSystem::m_time, m_toDeform, Nektar::LibUtilities::ReduceMax, Nektar::GlobalMapping::UpdateGeometry(), Nektar::LinearElasticSystem::v_DoSolve(), Vmath::Vcopy(), and WriteGeometry().

◆ v_GenerateSummary()

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

overrideprotectedvirtual

Generate summary at runtime.

Reimplemented from Nektar::LinearElasticSystem.

Definition at line 122 of file IterativeElasticSystem.cpp.

{
    LinearElasticSystem::v_GenerateSummary(s);
}

References Nektar::LinearElasticSystem::v_GenerateSummary().

◆ v_InitObject()

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

overrideprotectedvirtual

Set up the linear elasticity system.

This routine loads the E and nu variables from the session file, creates a coupled assembly map and creates containers for the statically condensed block matrix system.

Reimplemented from Nektar::LinearElasticSystem.

Definition at line 64 of file IterativeElasticSystem.cpp.

{
    LinearElasticSystem::v_InitObject(DeclareFields);
 
    const int nVel = m_fields[0]->GetCoordim(0);
 
    // Read in number of steps to take.
    m_session->LoadParameter("NumSteps", m_numSteps, 0);
    ASSERTL0(m_numSteps > 0, "You must specify at least one step");
 
    // Read in whether to repeatedly apply boundary conditions (for e.g.
    // rotation purposes).
    string bcType;
    m_session->LoadSolverInfo("BCType", bcType, "Normal");
    m_repeatBCs = bcType != "Normal";
 
    if (!m_repeatBCs)
    {
        // Loop over BCs, identify which ones we need to deform.
        const Array<OneD, const SpatialDomains::BoundaryConditionShPtr>
            &bndCond = m_fields[0]->GetBndConditions();
 
        for (int i = 0; i < bndCond.size(); ++i)
        {
            if (boost::iequals(bndCond[i]->GetUserDefined(), "Wall"))
            {
                m_toDeform.push_back(i);
            }
        }
 
        int numDeform = m_toDeform.size();
        m_comm->AllReduce(numDeform, LibUtilities::ReduceMax);
        ASSERTL0(numDeform > 0, "You must specify at least one WALL tag on"
                                "a boundary condition");
 
        m_savedBCs =
            Array<OneD, Array<OneD, Array<OneD, NekDouble>>>(m_toDeform.size());
 
        for (int i = 0; i < m_toDeform.size(); ++i)
        {
            m_savedBCs[i] = Array<OneD, Array<OneD, NekDouble>>(nVel);
            for (int j = 0; j < nVel; ++j)
            {
                const int id = m_toDeform[i];
                MultiRegions::ExpListSharedPtr bndCondExp =
                    m_fields[j]->GetBndCondExpansions()[id];
                int nCoeffs = bndCondExp->GetNcoeffs();
 
                m_savedBCs[i][j] = Array<OneD, NekDouble>(nCoeffs);
                Vmath::Smul(nCoeffs, 1.0 / m_numSteps, bndCondExp->GetCoeffs(),
                            1, bndCondExp->UpdateCoeffs(), 1);
                Vmath::Vcopy(nCoeffs, bndCondExp->GetCoeffs(), 1,
                             m_savedBCs[i][j], 1);
            }
        }
    }
}

References ASSERTL0, Nektar::SolverUtils::EquationSystem::m_comm, Nektar::SolverUtils::EquationSystem::m_fields, m_numSteps, m_repeatBCs, m_savedBCs, Nektar::SolverUtils::EquationSystem::m_session, m_toDeform, Nektar::LibUtilities::ReduceMax, Vmath::Smul(), Nektar::LinearElasticSystem::v_InitObject(), and Vmath::Vcopy().

◆ WriteGeometry()

void Nektar::IterativeElasticSystem::WriteGeometry ( const int i )

protected

Write out a file in serial or directory in parallel containing new mesh geometry.

Definition at line 219 of file IterativeElasticSystem.cpp.

{
    fs::path filename;
    stringstream s;
    s << m_session->GetSessionName() << "-" << i;
 
    if (m_session->GetComm()->GetSize() > 1)
    {
        s << "_xml";
 
        string ss = s.str();
        if (!fs::is_directory(ss))
        {
            fs::create_directory(ss);
        }
 
        boost::format pad("P%1$07d.xml");
        pad % m_session->GetComm()->GetRank();
        filename = fs::path(ss) / fs::path(pad.str());
    }
    else
    {
        s << ".xml";
        filename = fs::path(s.str());
    }
 
    string fname = LibUtilities::PortablePath(filename);
    m_fields[0]->GetGraph()->WriteGeometry(fname);
}

References CellMLToNektar.pycml::format, Nektar::SolverUtils::EquationSystem::m_fields, Nektar::SolverUtils::EquationSystem::m_session, and Nektar::LibUtilities::PortablePath().

Referenced by v_DoSolve().

Friends And Related Function Documentation

◆ MemoryManager< IterativeElasticSystem >

friend class MemoryManager< IterativeElasticSystem >

friend

Class may only be instantiated through the MemoryManager.

Definition at line 1 of file IterativeElasticSystem.h.

Member Data Documentation

◆ className

string Nektar::IterativeElasticSystem::className

static

Initial value:

=
    GetEquationSystemFactory().RegisterCreatorFunction(
        "IterativeElasticSystem", IterativeElasticSystem::create)

Name of class.

Definition at line 69 of file IterativeElasticSystem.h.

◆ m_numSteps

int Nektar::IterativeElasticSystem::m_numSteps

protected

Number of steps to split deformation across.

Definition at line 73 of file IterativeElasticSystem.h.

Referenced by v_DoSolve(), and v_InitObject().

◆ m_repeatBCs

bool Nektar::IterativeElasticSystem::m_repeatBCs

protected

Flag determining whether to repeat boundary conditions.

Definition at line 75 of file IterativeElasticSystem.h.

Referenced by v_DoSolve(), and v_InitObject().

◆ m_savedBCs

Array<OneD, Array<OneD, Array<OneD, NekDouble> > > Nektar::IterativeElasticSystem::m_savedBCs

protected

Storage for boundary conditions.

Definition at line 77 of file IterativeElasticSystem.h.

Referenced by v_DoSolve(), and v_InitObject().

◆ m_toDeform

std::vector<int> Nektar::IterativeElasticSystem::m_toDeform

protected

Vector of boundary regions to deform.

Definition at line 79 of file IterativeElasticSystem.h.

Referenced by v_DoSolve(), and v_InitObject().

Static Public Member Functions

Static Public Attributes

Protected Member Functions

Protected Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ IterativeElasticSystem()

Member Function Documentation

◆ create()

◆ v_DoSolve()

◆ v_GenerateSummary()

◆ v_InitObject()

◆ WriteGeometry()

Friends And Related Function Documentation

◆ MemoryManager< IterativeElasticSystem >

Member Data Documentation

◆ className

◆ m_numSteps

◆ m_repeatBCs

◆ m_savedBCs

◆ m_toDeform