Nektar::IsentropicVortexBC Class Reference

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

#include <IsentropicVortexBC.h>

Inheritance diagram for Nektar::IsentropicVortexBC:

Collaboration diagram for Nektar::IsentropicVortexBC:

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)
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...

Private Member Functions
	IsentropicVortexBC (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)
void	EvaluateIsentropicVortex (const Array< OneD, NekDouble > &x, const Array< OneD, NekDouble > &y, const Array< OneD, NekDouble > &z, Array< OneD, Array< OneD, NekDouble > > &u, NekDouble time, const int o=0)
virtual	~IsentropicVortexBC (void)

Friends
class	MemoryManager< IsentropicVortexBC >

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...
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_gamma
	Parameters of the flow. More...
NekDouble	m_rhoInf
NekDouble	m_pInf
Array< OneD, NekDouble >	m_velInf
int	m_bcRegion
	Id of the boundary region. More...
int	m_offset
	Offset. More...

Detailed Description

Wall boundary conditions for compressible flow problems.

Definition at line 48 of file IsentropicVortexBC.h.

Constructor & Destructor Documentation

Nektar::IsentropicVortexBC::IsentropicVortexBC ( 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 IsentropicVortexBC.cpp.

    : CFSBndCond(pSession, pFields, pTraceNormals, pSpaceDim, bcRegion, cnt)
{
}

virtual Nektar::IsentropicVortexBC::~IsentropicVortexBC ( void  )

inlineprivatevirtual

Definition at line 93 of file IsentropicVortexBC.h.

{};

Member Function Documentation

static CFSBndCondSharedPtr Nektar::IsentropicVortexBC::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 55 of file IsentropicVortexBC.h.

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

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

void Nektar::IsentropicVortexBC::EvaluateIsentropicVortex ( const Array< OneD, NekDouble > &  x, const Array< OneD, NekDouble > &  y, const Array< OneD, NekDouble > &  z, Array< OneD, Array< OneD, NekDouble > > &  u, NekDouble  time, const int  o = 0  )

private

Definition at line 97 of file IsentropicVortexBC.cpp.

References Nektar::CFSBndCond::m_gamma, Nektar::CFSBndCond::m_spacedim, and Vmath::Zero().

Referenced by v_Apply().

{
    int nq = x.num_elements();

    // Flow parameters
    const NekDouble x0    = 5.0;
    const NekDouble y0    = 0.0;
    const NekDouble beta  = 5.0;
    const NekDouble u0    = 1.0;
    const NekDouble v0    = 0.5;
    const NekDouble gamma = m_gamma;
    NekDouble r, xbar, ybar, tmp;
    NekDouble fac = 1.0/(16.0*gamma*M_PI*M_PI);

    // In 3D zero rhow field.
    if (m_spacedim == 3)
    {
        Vmath::Zero(nq, &u[3][o], 1);
    }

    // Fill storage
    for (int i = 0; i < nq; ++i)
    {
        xbar      = x[i] - u0*time - x0;
        ybar      = y[i] - v0*time - y0;
        r         = sqrt(xbar*xbar + ybar*ybar);
        tmp       = beta*exp(1-r*r);
        u[0][i+o] = pow(1.0 - (gamma-1.0)*tmp*tmp*fac, 1.0/(gamma-1.0));
        u[1][i+o] = u[0][i+o]*(u0 - tmp*ybar/(2*M_PI));
        u[2][i+o] = u[0][i+o]*(v0 + tmp*xbar/(2*M_PI));
        u[m_spacedim+1][i+o] = pow(u[0][i+o], gamma)/(gamma-1.0) +
        0.5*(u[1][i+o]*u[1][i+o] + u[2][i+o]*u[2][i+o]) / u[0][i+o];
    }
}

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

protectedvirtual

Implements Nektar::CFSBndCond.

Definition at line 58 of file IsentropicVortexBC.cpp.

References EvaluateIsentropicVortex(), Nektar::CFSBndCond::m_bcRegion, Nektar::CFSBndCond::m_fields, Nektar::CFSBndCond::m_offset, and Vmath::Vcopy().

{
    int nvariables = physarray.num_elements();

    const Array<OneD, const int> &bndTraceMap = m_fields[0]->GetTraceBndMap();
    // loop over Boundary Regions
    int npoints, id1, id2, e_max;

    e_max = m_fields[0]->GetBndCondExpansions()[m_bcRegion]->GetExpSize();

    for(int e = 0; e < e_max; ++e)
    {
        npoints = 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(bndTraceMap[m_offset+e]);

        Array<OneD,NekDouble> x(npoints, 0.0);
        Array<OneD,NekDouble> y(npoints, 0.0);
        Array<OneD,NekDouble> z(npoints, 0.0);

        m_fields[0]->GetBndCondExpansions()[m_bcRegion]->
        GetExp(e)->GetCoords(x, y, z);

        EvaluateIsentropicVortex(x, y, z, Fwd, time, id2);

        for (int i = 0; i < nvariables; ++i)
        {
            Vmath::Vcopy(npoints, &Fwd[i][id2], 1, 
                         &(m_fields[i]->GetBndCondExpansions()[m_bcRegion]->
                         UpdatePhys())[id1], 1);
        }
    }
}

Friends And Related Function Documentation

friend class MemoryManager< IsentropicVortexBC >

friend

Definition at line 52 of file IsentropicVortexBC.h.

Member Data Documentation

std::string Nektar::IsentropicVortexBC::className

static

Initial value:

= GetCFSBndCondFactory().
    RegisterCreatorFunction("IsentropicVortex",
                            IsentropicVortexBC::create,
                            "Isentropic vortex boundary condition.")

Name of the class.

Definition at line 68 of file IsentropicVortexBC.h.