Nektar::ForcingAxiSymmetric Class Reference

#include <ForcingAxiSymmetric.h>

Inheritance diagram for Nektar::ForcingAxiSymmetric:

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

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

Protected Member Functions
virtual void	v_InitObject (const Array< OneD, MultiRegions::ExpListSharedPtr > &pFields, const unsigned int &pNumForcingFields, const TiXmlElement *pForce)
virtual 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 &pSession, const std::weak_ptr< EquationSystem > &pEquation)
	Constructor. More...
SOLVER_UTILS_EXPORT SessionFunctionSharedPtr	GetFunction (const Array< OneD, MultiRegions::ExpListSharedPtr > &pFields, const LibUtilities::SessionReaderSharedPtr &pSession, std::string pName, bool pCache=false)
	Get a SessionFunction by name. More...
SOLVER_UTILS_EXPORT void	EvaluateTimeFunction (LibUtilities::SessionReaderSharedPtr pSession, std::string pFieldName, Array< OneD, NekDouble > &pArray, const std::string &pFunctionName, NekDouble pTime=NekDouble(0))
SOLVER_UTILS_EXPORT void	EvaluateTimeFunction (const NekDouble pTime, const LibUtilities::EquationSharedPtr &pEqn, Array< OneD, NekDouble > &pArray)

Private Member Functions
	ForcingAxiSymmetric (const LibUtilities::SessionReaderSharedPtr &pSession, const std::weak_ptr< SolverUtils::EquationSystem > &pEquation)

Private Attributes
Array< OneD, NekDouble >	m_geomFactor
VariableConverterSharedPtr	m_varConv

Friends
class	MemoryManager< ForcingAxiSymmetric >

Additional Inherited Members
Public Member Functions inherited from Nektar::SolverUtils::Forcing
virtual SOLVER_UTILS_EXPORT	~Forcing ()
SOLVER_UTILS_EXPORT void	InitObject (const Array< OneD, MultiRegions::ExpListSharedPtr > &pFields, const unsigned int &pNumForcingFields, const TiXmlElement *pForce)
	Initialise the forcing object. More...
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. More...
SOLVER_UTILS_EXPORT const Array< OneD, const Array< OneD, NekDouble > > &	GetForces ()
SOLVER_UTILS_EXPORT Array< OneD, Array< OneD, NekDouble > > &	UpdateForces ()
Protected Attributes inherited from Nektar::SolverUtils::Forcing
LibUtilities::SessionReaderSharedPtr	m_session
	Session reader. More...
const std::weak_ptr< EquationSystem >	m_equ
	Weak pointer to equation system using this forcing. More...
Array< OneD, Array< OneD, NekDouble > >	m_Forcing
	Evaluated forcing function. More...
int	m_NumVariable
	Number of variables. More...
std::map< std::string, SolverUtils::SessionFunctionSharedPtr >	m_sessionFunctions
	Map of known SessionFunctions. More...

Detailed Description

Definition at line 44 of file ForcingAxiSymmetric.h.

Constructor & Destructor Documentation

ForcingAxiSymmetric()

Nektar::ForcingAxiSymmetric::ForcingAxiSymmetric ( const LibUtilities::SessionReaderSharedPtr &  pSession, const std::weak_ptr< SolverUtils::EquationSystem > &  pEquation  )

private

Definition at line 48 of file ForcingAxiSymmetric.cpp.

    : Forcing(pSession, pEquation)
{
}

Member Function Documentation

create()

static SolverUtils::ForcingSharedPtr Nektar::ForcingAxiSymmetric::create ( const LibUtilities::SessionReaderSharedPtr &  pSession, const std::weak_ptr< SolverUtils::EquationSystem > &  pEquation, const Array< OneD, MultiRegions::ExpListSharedPtr > &  pFields, const unsigned int &  pNumForcingFields, const TiXmlElement *  pForce  )

inlinestatic

Creates an instance of this class.

Definition at line 51 of file ForcingAxiSymmetric.h.

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

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

v_Apply()

void Nektar::ForcingAxiSymmetric::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 103 of file ForcingAxiSymmetric.cpp.

References Nektar::SolverUtils::Forcing::m_Forcing, m_geomFactor, Nektar::SolverUtils::Forcing::m_NumVariable, m_varConv, Vmath::Smul(), Vmath::Vadd(), Vmath::Vdiv(), Vmath::Vmul(), and Vmath::Vsub().

{
    boost::ignore_unused(time);

    int nPoints = pFields[0]->GetTotPoints();

    // Get (E+p)
    Array<OneD, NekDouble> tmp (nPoints, 0.0);
    m_varConv->GetPressure(inarray, tmp);
    Vmath::Vadd(nPoints, tmp, 1,
                    inarray[m_NumVariable-1], 1, tmp, 1);

    // F-rho = -1/r *rhou
    Vmath::Vmul(nPoints, m_geomFactor, 1,
                         inarray[1], 1, m_Forcing[0], 1);

    // F-rhou_r = -1/r *rhou_r * u_r and F-rhou_y = -1/r *rhou_y * u_r
    for (int i = 1; i < 3; ++i)
    {
        Vmath::Vmul(nPoints, inarray[1], 1,
                             inarray[i], 1, m_Forcing[i], 1);
        Vmath::Vdiv(nPoints, m_Forcing[i], 1,
                             inarray[0], 1, m_Forcing[i], 1);
        Vmath::Vmul(nPoints, m_Forcing[i], 1,
                             m_geomFactor, 1, m_Forcing[i], 1);
    }

    // F-E = -1/r *(E+p)*u
    Vmath::Vmul(nPoints, inarray[1], 1,
                         tmp, 1, m_Forcing[m_NumVariable-1], 1);
    Vmath::Vdiv(nPoints, m_Forcing[m_NumVariable-1], 1,
                         inarray[0], 1, m_Forcing[m_NumVariable-1], 1);
    Vmath::Vmul(nPoints, m_Forcing[m_NumVariable-1], 1,
                         m_geomFactor, 1, m_Forcing[m_NumVariable-1], 1);

    // Swirl
    if (m_NumVariable == 5)
    {
        // F-rhou_r -= (-1/r) * rho * u_theta * u_theta
        Vmath::Vmul(nPoints, inarray[3], 1,
                             inarray[3], 1, tmp, 1);
        Vmath::Vdiv(nPoints, tmp, 1,
                             inarray[0], 1, tmp, 1);
        Vmath::Vmul(nPoints, tmp, 1,
                             m_geomFactor, 1, tmp, 1);
        Vmath::Vsub(nPoints, m_Forcing[1], 1,
                             tmp, 1, m_Forcing[1], 1);

        // F-rhou_theta = 2 * (-1/r *rhou_theta * u_r)
        Vmath::Vmul(nPoints, inarray[1], 1,
                             inarray[3], 1, m_Forcing[3], 1);
        Vmath::Vdiv(nPoints, m_Forcing[3], 1,
                             inarray[0], 1, m_Forcing[3], 1);
        Vmath::Vmul(nPoints, m_Forcing[3], 1,
                             m_geomFactor, 1, m_Forcing[3], 1);
        Vmath::Smul(nPoints, 2.0,
                             m_Forcing[3], 1, m_Forcing[3], 1);
    }

    // Apply forcing
    for (int i = 0; i < m_NumVariable; i++)
    {
        Vmath::Vadd(nPoints, outarray[i], 1,
                    m_Forcing[i], 1, outarray[i], 1);
    }
}

v_InitObject()

void Nektar::ForcingAxiSymmetric::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 ForcingAxiSymmetric.cpp.

References Nektar::MemoryManager< DataType >::AllocateSharedPtr(), Nektar::NekConstants::kNekZeroTol, Nektar::SolverUtils::Forcing::m_Forcing, m_geomFactor, Nektar::SolverUtils::Forcing::m_NumVariable, Nektar::SolverUtils::Forcing::m_session, and m_varConv.

{
    boost::ignore_unused(pForce);

    int spacedim = pFields[0]->GetGraph()->GetSpaceDimension();
    int nPoints  = pFields[0]->GetTotPoints();

    m_NumVariable = pNumForcingFields;
    m_varConv     = MemoryManager<VariableConverter>::AllocateSharedPtr(
                    m_session, spacedim);

    // Get coordinates
    Array<OneD, Array<OneD, NekDouble> > coords(3);
    for (int i = 0; i < 3; i++)
    {
        coords[i]      = Array<OneD, NekDouble> (nPoints);
    }
    pFields[0]->GetCoords(coords[0], coords[1], coords[2]);

    // Calculate fac = -1/r if r!=0, fac = 0 if r == 0
    m_geomFactor = Array<OneD, NekDouble> (nPoints);
    for (int i = 0; i < nPoints; ++i)
    {
        if (coords[0][i] < NekConstants::kNekZeroTol)
        {
            m_geomFactor[i] = 0;
        }
        else
        {
            m_geomFactor[i] = -1.0/coords[0][i];
        }
    }

    // Project m_geomFactor to solution space
    Array<OneD, NekDouble> tmpCoeff (pFields[0]->GetNcoeffs(), 0.0);
    pFields[0]->FwdTrans_IterPerExp(m_geomFactor, tmpCoeff);
    pFields[0]->BwdTrans(tmpCoeff, m_geomFactor);

    m_Forcing = Array<OneD, Array<OneD, NekDouble> > (m_NumVariable);
    for (int i = 0; i < m_NumVariable; ++i)
    {
        m_Forcing[i] = Array<OneD, NekDouble> (pFields[0]->GetTotPoints(), 0.0);
    }
}

Friends And Related Function Documentation

MemoryManager< ForcingAxiSymmetric >

friend class MemoryManager< ForcingAxiSymmetric >

friend

Definition at line 48 of file ForcingAxiSymmetric.h.

Member Data Documentation

className

std::string Nektar::ForcingAxiSymmetric::className

static

Initial value:

= SolverUtils::GetForcingFactory().
            RegisterCreatorFunction("AxiSymmetric",
                                ForcingAxiSymmetric::create,
                                "Forcing for axi-symmetric flow (around x=0)")

Name of the class.

Definition at line 66 of file ForcingAxiSymmetric.h.

m_geomFactor

Array<OneD, NekDouble> Nektar::ForcingAxiSymmetric::m_geomFactor

private

Definition at line 86 of file ForcingAxiSymmetric.h.

Referenced by v_Apply(), and v_InitObject().

m_varConv

VariableConverterSharedPtr Nektar::ForcingAxiSymmetric::m_varConv

private

Definition at line 87 of file ForcingAxiSymmetric.h.

Referenced by v_Apply(), and v_InitObject().