Nektar::SymmetryBC Class Reference

Symmetry boundary conditions for compressible flow problems. More...

#include <SymmetryBC.h>

Inheritance diagram for Nektar::SymmetryBC:

Static Public Member Functions
static CFSBndCondSharedPtr	create (const LibUtilities::SessionReaderSharedPtr &pSession, const Array< OneD, MultiRegions::ExpListSharedPtr > &pFields, const Array< OneD, Array< OneD, NekDouble >> &pTraceNormals, const int pSpaceDim, const int bcRegion, const int cnt)
	Creates an instance of this class. More...

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

Protected Member Functions
virtual void	v_Apply (Array< OneD, Array< OneD, NekDouble >> &Fwd, Array< OneD, Array< OneD, NekDouble >> &physarray, const NekDouble &time) override
Protected Member Functions inherited from Nektar::CFSBndCond
	CFSBndCond (const LibUtilities::SessionReaderSharedPtr &pSession, const Array< OneD, MultiRegions::ExpListSharedPtr > &pFields, const Array< OneD, Array< OneD, NekDouble >> &pTraceNormals, const int pSpaceDim, const int bcRegion, const int cnt)
	Constructor. More...
virtual void	v_ApplyBwdWeight ()

Private Member Functions
	SymmetryBC (const LibUtilities::SessionReaderSharedPtr &pSession, const Array< OneD, MultiRegions::ExpListSharedPtr > &pFields, const Array< OneD, Array< OneD, NekDouble >> &pTraceNormals, const int pSpaceDim, const int bcRegion, const int cnt)
virtual	~SymmetryBC (void)

Friends
class	MemoryManager< SymmetryBC >

Additional Inherited Members
Public Member Functions inherited from Nektar::CFSBndCond
virtual	~CFSBndCond ()
void	Apply (Array< OneD, Array< OneD, NekDouble >> &Fwd, Array< OneD, Array< OneD, NekDouble >> &physarray, const NekDouble &time=0)
	Apply the boundary condition. More...
void	ApplyBwdWeight ()
	Apply the Weight of boundary condition. More...
Protected Attributes inherited from Nektar::CFSBndCond
LibUtilities::SessionReaderSharedPtr	m_session
	Session reader. More...
Array< OneD, MultiRegions::ExpListSharedPtr >	m_fields
	Array of fields. More...
Array< OneD, Array< OneD, NekDouble > >	m_traceNormals
	Trace normals. More...
int	m_spacedim
	Space dimension. More...
VariableConverterSharedPtr	m_varConv
	Auxiliary object to convert variables. More...
NekDouble	m_diffusionAveWeight
	Weight for average calculation of diffusion term. More...
NekDouble	m_gamma
	Parameters of the flow. More...
NekDouble	m_rhoInf
NekDouble	m_pInf
NekDouble	m_pOut
Array< OneD, NekDouble >	m_velInf
int	m_bcRegion
	Id of the boundary region. More...
int	m_offset
	Offset. More...

Detailed Description

Symmetry boundary conditions for compressible flow problems.

Definition at line 46 of file SymmetryBC.h.

Constructor & Destructor Documentation

SymmetryBC()

Nektar::SymmetryBC::SymmetryBC ( const LibUtilities::SessionReaderSharedPtr &  pSession, const Array< OneD, MultiRegions::ExpListSharedPtr > &  pFields, const Array< OneD, Array< OneD, NekDouble >> &  pTraceNormals, const int  pSpaceDim, const int  bcRegion, const int  cnt  )

private

Definition at line 48 of file SymmetryBC.cpp.

    : CFSBndCond(pSession, pFields, pTraceNormals, pSpaceDim, bcRegion, cnt)
{
    m_diffusionAveWeight = 0.5;
}

References Nektar::CFSBndCond::m_diffusionAveWeight.

~SymmetryBC()

virtual Nektar::SymmetryBC::~SymmetryBC ( void  )

inlineprivatevirtual

Definition at line 77 of file SymmetryBC.h.

{};

Member Function Documentation

create()

static CFSBndCondSharedPtr Nektar::SymmetryBC::create ( const LibUtilities::SessionReaderSharedPtr &  pSession, const Array< OneD, MultiRegions::ExpListSharedPtr > &  pFields, const Array< OneD, Array< OneD, NekDouble >> &  pTraceNormals, const int  pSpaceDim, const int  bcRegion, const int  cnt  )

inlinestatic

Creates an instance of this class.

Definition at line 52 of file SymmetryBC.h.

    {
        CFSBndCondSharedPtr p = MemoryManager<SymmetryBC>::AllocateSharedPtr(
            pSession, pFields, pTraceNormals, pSpaceDim, bcRegion, cnt);
        return p;
    }

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

v_Apply()

void Nektar::SymmetryBC::v_Apply ( Array< OneD, Array< OneD, NekDouble >> &  Fwd, Array< OneD, Array< OneD, NekDouble >> &  physarray, const NekDouble &  time  )

overrideprotectedvirtual

Implements Nektar::CFSBndCond.

Definition at line 58 of file SymmetryBC.cpp.

{
    boost::ignore_unused(time);
 
    int i;
    int nVariables = physarray.size();
 
    const Array<OneD, const int> &traceBndMap = m_fields[0]->GetTraceBndMap();
 
    // Take into account that for PDE based shock capturing, eps = 0 at the
    // wall.
    int e, id1, id2, nBCEdgePts, eMax;
 
    eMax = m_fields[0]->GetBndCondExpansions()[m_bcRegion]->GetExpSize();
 
    for (e = 0; e < eMax; ++e)
    {
        nBCEdgePts = m_fields[0]
                         ->GetBndCondExpansions()[m_bcRegion]
                         ->GetExp(e)
                         ->GetTotPoints();
        id1 =
            m_fields[0]->GetBndCondExpansions()[m_bcRegion]->GetPhys_Offset(e);
        id2 =
            m_fields[0]->GetTrace()->GetPhys_Offset(traceBndMap[m_offset + e]);
 
        // For 2D/3D, define: v* = v - 2(v.n)n
        Array<OneD, NekDouble> tmp(nBCEdgePts, 0.0);
 
        // Calculate (v.n)
        for (i = 0; i < m_spacedim; ++i)
        {
            Vmath::Vvtvp(nBCEdgePts, &Fwd[1 + i][id2], 1,
                         &m_traceNormals[i][id2], 1, &tmp[0], 1, &tmp[0], 1);
        }
 
        // Calculate 2.0(v.n)
        Vmath::Smul(nBCEdgePts, -2.0, &tmp[0], 1, &tmp[0], 1);
 
        // Calculate v* = v - 2.0(v.n)n
        for (i = 0; i < m_spacedim; ++i)
        {
            Vmath::Vvtvp(nBCEdgePts, &tmp[0], 1, &m_traceNormals[i][id2], 1,
                         &Fwd[1 + i][id2], 1, &Fwd[1 + i][id2], 1);
        }
 
        // Copy boundary adjusted values into the boundary expansion
        for (i = 0; i < nVariables; ++i)
        {
            Vmath::Vcopy(nBCEdgePts, &Fwd[i][id2], 1,
                         &(m_fields[i]
                               ->GetBndCondExpansions()[m_bcRegion]
                               ->UpdatePhys())[id1],
                         1);
        }
    }
}

References Nektar::CFSBndCond::m_bcRegion, Nektar::CFSBndCond::m_fields, Nektar::CFSBndCond::m_offset, Nektar::CFSBndCond::m_spacedim, Nektar::CFSBndCond::m_traceNormals, Vmath::Smul(), Vmath::Vcopy(), and Vmath::Vvtvp().

Friends And Related Function Documentation

MemoryManager< SymmetryBC >

friend class MemoryManager< SymmetryBC >

friend

Definition at line 1 of file SymmetryBC.h.

Member Data Documentation

className

std::string Nektar::SymmetryBC::className

static

Initial value:

=
    GetCFSBndCondFactory().RegisterCreatorFunction(
        "Symmetry", SymmetryBC::create, "Symmetry boundary condition.")

Name of the class.

Definition at line 64 of file SymmetryBC.h.