Nektar::SolverUtils::ForcingBody Class Reference

#include <ForcingBody.h>

Inheritance diagram for Nektar::SolverUtils::ForcingBody:

Collaboration diagram for Nektar::SolverUtils::ForcingBody:

Static Public Member Functions
static SOLVER_UTILS_EXPORT ForcingSharedPtr	create (const LibUtilities::SessionReaderSharedPtr &pSession, const Array< OneD, MultiRegions::ExpListSharedPtr > &pFields, const unsigned int &pNumForcingFields, const TiXmlElement *pForce)
	Creates an instance of this class.
Static Public Member Functions inherited from Nektar::SolverUtils::Forcing
static SOLVER_UTILS_EXPORT std::vector< ForcingSharedPtr >	Load (const LibUtilities::SessionReaderSharedPtr &pSession, const Array< OneD, MultiRegions::ExpListSharedPtr > &pFields, const unsigned int &pNumForcingFields=0)

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

Protected Member Functions
virtual SOLVER_UTILS_EXPORT void	v_InitObject (const Array< OneD, MultiRegions::ExpListSharedPtr > &pFields, const unsigned int &pNumForcingFields, const TiXmlElement *pForce)
virtual SOLVER_UTILS_EXPORT void	v_Apply (const Array< OneD, MultiRegions::ExpListSharedPtr > &fields, const Array< OneD, Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &outarray, const NekDouble &time)
Protected Member Functions inherited from Nektar::SolverUtils::Forcing
SOLVER_UTILS_EXPORT	Forcing (const LibUtilities::SessionReaderSharedPtr &)
	Constructor.
void	EvaluateFunction (Array< OneD, MultiRegions::ExpListSharedPtr > pFields, LibUtilities::SessionReaderSharedPtr pSession, std::string pFieldName, Array< OneD, NekDouble > &pArray, const std::string &pFunctionName, NekDouble pTime=NekDouble(0))
void	EvaluateTimeFunction (LibUtilities::SessionReaderSharedPtr pSession, std::string pFieldName, Array< OneD, NekDouble > &pArray, const std::string &pFunctionName, NekDouble pTime=NekDouble(0))

Private Member Functions
	ForcingBody (const LibUtilities::SessionReaderSharedPtr &pSession)

Friends
class	MemoryManager< ForcingBody >

Additional Inherited Members
Public Member Functions inherited from Nektar::SolverUtils::Forcing
SOLVER_UTILS_EXPORT void	InitObject (const Array< OneD, MultiRegions::ExpListSharedPtr > &pFields, const unsigned int &pNumForcingFields, const TiXmlElement *pForce)
	Initialise the forcing object.
SOLVER_UTILS_EXPORT void	Apply (const Array< OneD, MultiRegions::ExpListSharedPtr > &fields, const Array< OneD, Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &outarray, const NekDouble &time)
	Apply the forcing.
Protected Attributes inherited from Nektar::SolverUtils::Forcing
LibUtilities::SessionReaderSharedPtr	m_session
	Session reader.
Array< OneD, Array< OneD, NekDouble > >	m_Forcing
	Evaluated forcing function.
int	m_NumVariable
	Number of variables.

Detailed Description

Definition at line 51 of file ForcingBody.h.

Constructor & Destructor Documentation

Nektar::SolverUtils::ForcingBody::ForcingBody ( const LibUtilities::SessionReaderSharedPtr &  pSession )

private

Definition at line 49 of file ForcingBody.cpp.

        : Forcing(pSession)
    {
    }

Member Function Documentation

static SOLVER_UTILS_EXPORT ForcingSharedPtr Nektar::SolverUtils::ForcingBody::create ( const LibUtilities::SessionReaderSharedPtr &  pSession, const Array< OneD, MultiRegions::ExpListSharedPtr > &  pFields, const unsigned int &  pNumForcingFields, const TiXmlElement *  pForce  )

inlinestatic

Creates an instance of this class.

Definition at line 58 of file ForcingBody.h.

References Nektar::SolverUtils::ForcingSharedPtr.

            {
                ForcingSharedPtr p = MemoryManager<ForcingBody>::
                                                AllocateSharedPtr(pSession);
                p->InitObject(pFields, pNumForcingFields, pForce);
                return p;
            }

void Nektar::SolverUtils::ForcingBody::v_Apply ( const Array< OneD, MultiRegions::ExpListSharedPtr > &  fields, const Array< OneD, Array< OneD, NekDouble > > &  inarray, Array< OneD, Array< OneD, NekDouble > > &  outarray, const NekDouble &  time  )

protectedvirtual

Implements Nektar::SolverUtils::Forcing.

Definition at line 110 of file ForcingBody.cpp.

References Nektar::SolverUtils::Forcing::m_Forcing, Nektar::SolverUtils::Forcing::m_NumVariable, and Vmath::Vadd().

    {
        for (int i = 0; i < m_NumVariable; i++)
        {
            Vmath::Vadd(outarray[i].num_elements(), outarray[i], 1,
                        m_Forcing[i], 1, outarray[i], 1);
        }
    }

void Nektar::SolverUtils::ForcingBody::v_InitObject ( const Array< OneD, MultiRegions::ExpListSharedPtr > &  pFields, const unsigned int &  pNumForcingFields, const TiXmlElement *  pForce  )

protectedvirtual

Implements Nektar::SolverUtils::Forcing.

Definition at line 55 of file ForcingBody.cpp.

References ASSERTL0, Nektar::SolverUtils::Forcing::EvaluateFunction(), Nektar::SolverUtils::Forcing::m_Forcing, Nektar::SolverUtils::Forcing::m_NumVariable, and Nektar::SolverUtils::Forcing::m_session.

    {
        m_NumVariable = pNumForcingFields;
        int nq         = pFields[0]->GetTotPoints();

        const TiXmlElement* funcNameElmt = pForce->FirstChildElement("BODYFORCE");
        ASSERTL0(funcNameElmt, "Requires BODYFORCE tag specifying function "
                               "name which prescribes body force.");

        string funcName = funcNameElmt->GetText();
        ASSERTL0(m_session->DefinesFunction(funcName),
                 "Function '" + funcName + "' not defined.");

        bool singleMode, halfMode;
        m_session->MatchSolverInfo("ModeType", "SingleMode", singleMode, false);
        m_session->MatchSolverInfo("ModeType", "HalfMode", halfMode, false);

        m_Forcing = Array<OneD, Array<OneD, NekDouble> > (m_NumVariable);
        std::string s_FieldStr;
        for (int i = 0; i < m_NumVariable; ++i)
        {
            m_Forcing[i] = Array<OneD, NekDouble> (nq, 0.0);
            s_FieldStr   = m_session->GetVariable(i);
            ASSERTL0(m_session->DefinesFunction(funcName, s_FieldStr),
                     "Variable '" + s_FieldStr + "' not defined.");
            EvaluateFunction(pFields, m_session, s_FieldStr,
                             m_Forcing[i], funcName);
        }

        // If singleMode or halfMode, transform the forcing term to be in
        // physical space in the plane, but Fourier space in the homogeneous
        // direction
        if (singleMode || halfMode)
        {
            // Temporary array
            Array<OneD, NekDouble> forcingCoeff(pFields[0]->GetNcoeffs(), 0.0);

            bool w = pFields[0]->GetWaveSpace();
            for (int i = 0; i < m_NumVariable; ++i)
            {
                // FwdTrans in SEM and Fourier
                pFields[0]->SetWaveSpace(false);
                pFields[0]->FwdTrans_IterPerExp(m_Forcing[i], forcingCoeff);
                // BwdTrans in SEM only
                pFields[0]->SetWaveSpace(true);
                pFields[0]->BwdTrans(forcingCoeff, m_Forcing[i]);
            }
            pFields[0]->SetWaveSpace(w);
        }

    }

Friends And Related Function Documentation

friend class MemoryManager< ForcingBody >

friend

Definition at line 55 of file ForcingBody.h.

Member Data Documentation

std::string Nektar::SolverUtils::ForcingBody::className

static

Initial value:

 GetForcingFactory().
                                RegisterCreatorFunction("Body",
                                                        ForcingBody::create,
                                                        "Body Forcing")

Name of the class.

Definition at line 71 of file ForcingBody.h.