Nektar::SolverUtils::Diffusion3DHomogeneous1D Class Reference

#include <Diffusion3DHomogeneous1D.h>

Inheritance diagram for Nektar::SolverUtils::Diffusion3DHomogeneous1D:

Collaboration diagram for Nektar::SolverUtils::Diffusion3DHomogeneous1D:

Static Public Member Functions
static DiffusionSharedPtr	create (std::string diffType)

Static Public Attributes
static std::string	type []

Protected Member Functions
	Diffusion3DHomogeneous1D (std::string diffType)
	Diffusion3DHomogeneous1D uses the 2D WeakDG approach to compute the diffusion term looping on the planes in the z direction and adding the flux in z direction at the end. More...
virtual void	v_InitObject (LibUtilities::SessionReaderSharedPtr pSession, Array< OneD, MultiRegions::ExpListSharedPtr > pFields)
	Initiliase Diffusion3DHomogeneous1D objects and store them before starting the time-stepping. More...
virtual void	v_Diffuse (const int nConvective, const Array< OneD, MultiRegions::ExpListSharedPtr > &fields, const Array< OneD, Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &outarray)
	Calculate WeakDG Diffusion for the linear problems using an LDG interface flux and the the flux in the third direction. More...
Protected Member Functions inherited from Nektar::SolverUtils::Diffusion
virtual void	v_SetHomoDerivs (Array< OneD, Array< OneD, NekDouble > > &deriv)
virtual Array< OneD, Array < OneD, Array< OneD, NekDouble > > > &	v_GetFluxTensor ()

Protected Attributes
LibUtilities::TranspositionSharedPtr	m_trans
std::string	m_diffType
SolverUtils::DiffusionSharedPtr	m_planeDiff
NekDouble	m_homoLen
int	m_numPoints
int	m_numPointsPlane
int	m_numPlanes
int	m_planeCounter
Array< OneD, unsigned int >	m_planes
Array< OneD, unsigned int >	m_planePos
Array< OneD, Array< OneD, NekDouble > >	m_homoDerivStore
Array< OneD, Array< OneD, Array< OneD, NekDouble > > >	m_homoDerivPlane
Array< OneD, Array< OneD, NekDouble > >	m_inarrayPlane
Array< OneD, Array< OneD, NekDouble > >	m_outarrayPlane
Array< OneD, MultiRegions::ExpListSharedPtr >	m_fieldsPlane
Array< OneD, Array< OneD, NekDouble > >	m_advVelPlane
Protected Attributes inherited from Nektar::SolverUtils::Diffusion
DiffusionFluxVecCB	m_fluxVector
DiffusionFluxVecCBNS	m_fluxVectorNS
RiemannSolverSharedPtr	m_riemann
DiffusionArtificialDiffusion	m_ArtificialDiffusionVector

Additional Inherited Members
Public Member Functions inherited from Nektar::SolverUtils::Diffusion
SOLVER_UTILS_EXPORT void	InitObject (LibUtilities::SessionReaderSharedPtr pSession, Array< OneD, MultiRegions::ExpListSharedPtr > pFields)
SOLVER_UTILS_EXPORT void	Diffuse (const int nConvectiveFields, const Array< OneD, MultiRegions::ExpListSharedPtr > &fields, const Array< OneD, Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &outarray)
SOLVER_UTILS_EXPORT void	FluxVec (Array< OneD, Array< OneD, Array< OneD, NekDouble > > > &fluxvector)
template<typename FuncPointerT , typename ObjectPointerT >
void	SetFluxVector (FuncPointerT func, ObjectPointerT obj)
void	SetFluxVectorVec (DiffusionFluxVecCB fluxVector)
template<typename FuncPointerT , typename ObjectPointerT >
void	SetFluxVectorNS (FuncPointerT func, ObjectPointerT obj)
template<typename FuncPointerT , typename ObjectPointerT >
void	SetArtificialDiffusionVector (FuncPointerT func, ObjectPointerT obj)
void	SetFluxVectorNS (DiffusionFluxVecCBNS fluxVector)
void	SetRiemannSolver (RiemannSolverSharedPtr riemann)
void	SetHomoDerivs (Array< OneD, Array< OneD, NekDouble > > &deriv)
virtual Array< OneD, Array < OneD, Array< OneD, NekDouble > > > &	GetFluxTensor ()

Detailed Description

Definition at line 46 of file Diffusion3DHomogeneous1D.h.

Constructor & Destructor Documentation

Nektar::SolverUtils::Diffusion3DHomogeneous1D::Diffusion3DHomogeneous1D ( std::string  diffType )

protected

Diffusion3DHomogeneous1D uses the 2D WeakDG approach to compute the diffusion term looping on the planes in the z direction and adding the flux in z direction at the end.

Definition at line 78 of file Diffusion3DHomogeneous1D.cpp.

References Nektar::LibUtilities::NekFactory< tKey, tBase, >::CreateInstance(), and Nektar::SolverUtils::GetDiffusionFactory().

Referenced by create().

        {
            // Strip trailing string "3DHomogeneous1D" to determine 2D diffusion
            // type, and create a diffusion object for the plane.
            string name = diffType.substr(0, diffType.length()-15);
            m_planeDiff = GetDiffusionFactory().CreateInstance(name, name);
        }

Member Function Documentation

static DiffusionSharedPtr Nektar::SolverUtils::Diffusion3DHomogeneous1D::create ( std::string  diffType )

inlinestatic

Definition at line 49 of file Diffusion3DHomogeneous1D.h.

References Diffusion3DHomogeneous1D().

            {
                return DiffusionSharedPtr(
                    new Diffusion3DHomogeneous1D(diffType));
            }

void Nektar::SolverUtils::Diffusion3DHomogeneous1D::v_Diffuse ( const int  nConvective, const Array< OneD, MultiRegions::ExpListSharedPtr > &  fields, const Array< OneD, Array< OneD, NekDouble > > &  inarray, Array< OneD, Array< OneD, NekDouble > > &  outarray  )

protectedvirtual

Calculate WeakDG Diffusion for the linear problems using an LDG interface flux and the the flux in the third direction.

Implements Nektar::SolverUtils::Diffusion.

Definition at line 189 of file Diffusion3DHomogeneous1D.cpp.

References Vmath::Smul(), Vmath::Vadd(), Vmath::Vcopy(), and Vmath::Vsub().

        {
            
            Array<OneD, NekDouble> tmp(m_numPoints), tmp2;
            Array<OneD, Array<OneD, NekDouble> > viscHComp;
            const int nPointsTot = fields[0]->GetNpoints();
            int i, j;
            NekDouble beta;
            

            if (m_fluxVectorNS)
            {
                viscHComp = Array<OneD, Array<OneD, NekDouble> >(nConvectiveFields);
                for (i = 0; i < nConvectiveFields - 1; ++i)
                {
                    fields[0]->PhysDeriv(2, inarray[i], m_homoDerivStore[i]);
                    viscHComp[i] = Array<OneD, NekDouble>(m_numPoints);
                }
            }
            

            for (i = 0; i < m_numPlanes; ++i)
            {
                // Set up memory references for fields, inarray and outarray for
                // this plane.
                for (int j = 0; j < inarray.num_elements(); ++j)
                {
                    m_inarrayPlane [j] = Array<OneD, NekDouble>(
                        m_numPointsPlane, tmp2 = inarray [j] + m_planePos[i]);
                }

                for (int j = 0; j < nConvectiveFields; ++j)
                {
                    m_fieldsPlane  [j] = fields[j]->GetPlane(i);
                    m_outarrayPlane[j] = Array<OneD, NekDouble>(
                        m_numPointsPlane, tmp2 = outarray[j] + m_planePos[i]);
                }
                

                if (m_fluxVectorNS)
                {
                    m_planeDiff->SetHomoDerivs(m_homoDerivPlane[i]);
                }


                
                m_planeDiff->Diffuse(nConvectiveFields,
                                     m_fieldsPlane,
                                     m_inarrayPlane,
                                     m_outarrayPlane);
                
                if (m_fluxVectorNS)
                {
                    Array<OneD, Array<OneD, Array<OneD, NekDouble> > > &viscTensor = m_planeDiff->GetFluxTensor();

                    // Extract H (viscTensor[2])
                    for (int j = 0; j < nConvectiveFields - 1; ++j)
                    {
                        Vmath::Vcopy(m_numPointsPlane,
                                     viscTensor[2][j+1], 1,
                                     tmp2 = viscHComp[j] + m_planePos[i], 1);
                    }
                }
            }
            


            if (m_fluxVectorNS)
            {
                for (j = 0; j < nConvectiveFields - 1; ++j)
                {
                    fields[j+1]->PhysDeriv(2, viscHComp[j], tmp);
                    Vmath::Vadd(nPointsTot, outarray[j+1], 1, tmp, 1, outarray[j+1], 1);
                }
            }
            else
            {
                for (j = 0; j < nConvectiveFields; ++j)
                {
                    fields[j]->HomogeneousFwdTrans(inarray[j], tmp);

                    for (i = 0; i < m_numPlanes; ++i)
                    {
                        beta  = 2*M_PI*m_trans->GetK(i)/m_homoLen;
                        beta *= beta;

                        Vmath::Smul(m_numPointsPlane,
                                    beta,
                                    &tmp[0] + i*m_numPointsPlane, 1,
                                    &tmp[0] + i*m_numPointsPlane, 1);
                    }

                    fields[0]->HomogeneousBwdTrans(tmp, tmp);

                    Vmath::Vsub(nPointsTot, outarray[j], 1, tmp, 1,
                                outarray[j], 1);
                }
            }
        }

void Nektar::SolverUtils::Diffusion3DHomogeneous1D::v_InitObject ( LibUtilities::SessionReaderSharedPtr  pSession, Array< OneD, MultiRegions::ExpListSharedPtr >  pFields  )

protectedvirtual

Initiliase Diffusion3DHomogeneous1D objects and store them before starting the time-stepping.

Parameters

pSession	Pointer to session reader.
pFields	Pointer to fields.

Reimplemented from Nektar::SolverUtils::Diffusion.

Definition at line 93 of file Diffusion3DHomogeneous1D.cpp.

References Nektar::iterator.

        {
            int nConvectiveFields = pFields.num_elements();

            Array<OneD, MultiRegions::ExpListSharedPtr> pFields_plane0(
                nConvectiveFields);

            // Initialise the plane advection object.
            for (int i = 0; i < nConvectiveFields; ++i)
            {
                pFields_plane0[i] = pFields[i]->GetPlane(0);
            }
            m_planeDiff->InitObject(pSession, pFields_plane0);

            m_numPoints      = pFields[0]->GetTotPoints();
            m_planes         = pFields[0]->GetZIDs();
            m_numPlanes      = m_planes.num_elements();
            m_numPointsPlane = m_numPoints/m_numPlanes;
            m_homoLen        = pFields[0]->GetHomoLen();
            m_trans          = pFields[0]->GetTransposition();
            m_planeCounter = 0;
            m_planeDiff->SetFluxVectorNS(m_fluxVectorNS);

            if (m_riemann)
            {
                // Set Riemann solver and flux vector callback for this plane.
                m_planeDiff->SetRiemannSolver(m_riemann);

                // Override Riemann solver scalar and vector callbacks.
                map<string, RSScalarFuncType>::iterator it1;
                map<string, RSScalarFuncType> scalars = m_riemann->GetScalars();

                for (it1 = scalars.begin(); it1 != scalars.end(); ++it1)
                {
                    boost::shared_ptr<HomoRSScalar> tmp =
                        MemoryManager<HomoRSScalar>
                            ::AllocateSharedPtr(it1->second, m_numPlanes);
                    m_riemann->SetScalar(it1->first, &HomoRSScalar::Exec, tmp);
                }
            }

            m_fieldsPlane   = Array<OneD, MultiRegions::ExpListSharedPtr>
                                                            (nConvectiveFields);
            
            
            if (m_fluxVectorNS)
            {
                m_inarrayPlane  = Array<OneD, Array<OneD, NekDouble> >
                                                        (nConvectiveFields - 1);
            }
            else
            {
                m_inarrayPlane  = Array<OneD, Array<OneD, NekDouble> >
                                                            (nConvectiveFields);
            }
            m_outarrayPlane = Array<OneD, Array<OneD, NekDouble> >
                                                            (nConvectiveFields);
            m_planePos      = Array<OneD, unsigned int>     (m_numPlanes);

            for (int i = 0; i < m_numPlanes; ++i)
            {
                m_planePos[i] = i * m_numPointsPlane;
            }

            if (m_fluxVectorNS)
            {
                m_homoDerivStore = Array<OneD, Array<OneD, NekDouble> >(
                    nConvectiveFields);
                m_homoDerivPlane = Array<OneD, Array<OneD, Array<OneD, NekDouble> > >(
                    m_numPlanes);

                for (int i = 0; i < nConvectiveFields; ++i)
                {
                    m_homoDerivStore[i] = Array<OneD, NekDouble>(m_numPoints);
                }

                for (int i = 0; i < m_numPlanes; ++i)
                {
                    m_homoDerivPlane[i] = Array<OneD, Array<OneD, NekDouble> >(nConvectiveFields);

                    for (int j = 0; j < nConvectiveFields; ++j)
                    {
                        m_homoDerivPlane[i][j] = Array<OneD, NekDouble>(
                            m_numPointsPlane,
                            m_homoDerivStore[j] + m_planePos[i]);
                    }
                }
            }
        }

Member Data Documentation

Array<OneD, Array<OneD, NekDouble> > Nektar::SolverUtils::Diffusion3DHomogeneous1D::m_advVelPlane

protected

Definition at line 74 of file Diffusion3DHomogeneous1D.h.

std::string Nektar::SolverUtils::Diffusion3DHomogeneous1D::m_diffType

protected

Definition at line 60 of file Diffusion3DHomogeneous1D.h.

Array<OneD, MultiRegions::ExpListSharedPtr> Nektar::SolverUtils::Diffusion3DHomogeneous1D::m_fieldsPlane

protected

Definition at line 73 of file Diffusion3DHomogeneous1D.h.

Array<OneD, Array<OneD, Array<OneD, NekDouble> > > Nektar::SolverUtils::Diffusion3DHomogeneous1D::m_homoDerivPlane

protected

Definition at line 70 of file Diffusion3DHomogeneous1D.h.

Array<OneD, Array<OneD, NekDouble> > Nektar::SolverUtils::Diffusion3DHomogeneous1D::m_homoDerivStore

protected

Definition at line 69 of file Diffusion3DHomogeneous1D.h.

NekDouble Nektar::SolverUtils::Diffusion3DHomogeneous1D::m_homoLen

protected

Definition at line 62 of file Diffusion3DHomogeneous1D.h.

Array<OneD, Array<OneD, NekDouble> > Nektar::SolverUtils::Diffusion3DHomogeneous1D::m_inarrayPlane

protected

Definition at line 71 of file Diffusion3DHomogeneous1D.h.

int Nektar::SolverUtils::Diffusion3DHomogeneous1D::m_numPlanes

protected

Definition at line 65 of file Diffusion3DHomogeneous1D.h.

int Nektar::SolverUtils::Diffusion3DHomogeneous1D::m_numPoints

protected

Definition at line 63 of file Diffusion3DHomogeneous1D.h.

int Nektar::SolverUtils::Diffusion3DHomogeneous1D::m_numPointsPlane

protected

Definition at line 64 of file Diffusion3DHomogeneous1D.h.

Array<OneD, Array<OneD, NekDouble> > Nektar::SolverUtils::Diffusion3DHomogeneous1D::m_outarrayPlane

protected

Definition at line 72 of file Diffusion3DHomogeneous1D.h.

int Nektar::SolverUtils::Diffusion3DHomogeneous1D::m_planeCounter

protected

Definition at line 66 of file Diffusion3DHomogeneous1D.h.

SolverUtils::DiffusionSharedPtr Nektar::SolverUtils::Diffusion3DHomogeneous1D::m_planeDiff

protected

Definition at line 61 of file Diffusion3DHomogeneous1D.h.

Array<OneD, unsigned int> Nektar::SolverUtils::Diffusion3DHomogeneous1D::m_planePos

protected

Definition at line 68 of file Diffusion3DHomogeneous1D.h.

Array<OneD, unsigned int> Nektar::SolverUtils::Diffusion3DHomogeneous1D::m_planes

protected

Definition at line 67 of file Diffusion3DHomogeneous1D.h.

LibUtilities::TranspositionSharedPtr Nektar::SolverUtils::Diffusion3DHomogeneous1D::m_trans

protected

Definition at line 59 of file Diffusion3DHomogeneous1D.h.

std::string Nektar::SolverUtils::Diffusion3DHomogeneous1D::type

static

Initial value:

= {
            GetDiffusionFactory().RegisterCreatorFunction(
                "LDG3DHomogeneous1D",       Diffusion3DHomogeneous1D::create),
            GetDiffusionFactory().RegisterCreatorFunction(
                "LFRDG3DHomogeneous1D",     Diffusion3DHomogeneous1D::create),
            GetDiffusionFactory().RegisterCreatorFunction(
                "LFRSD3DHomogeneous1D",     Diffusion3DHomogeneous1D::create),
            GetDiffusionFactory().RegisterCreatorFunction(
                "LFRHU3DHomogeneous1D",     Diffusion3DHomogeneous1D::create),
            GetDiffusionFactory().RegisterCreatorFunction(
                "LFRcmin3DHomogeneous1D",   Diffusion3DHomogeneous1D::create),
            GetDiffusionFactory().RegisterCreatorFunction(
                "LFRcinf3DHomogeneous1D",   Diffusion3DHomogeneous1D::create),
            GetDiffusionFactory().RegisterCreatorFunction(
                "LDGNS3DHomogeneous1D",     Diffusion3DHomogeneous1D::create),
            GetDiffusionFactory().RegisterCreatorFunction(
                "LFRDGNS3DHomogeneous1D",   Diffusion3DHomogeneous1D::create),
            GetDiffusionFactory().RegisterCreatorFunction(
                "LFRSDNS3DHomogeneous1D",   Diffusion3DHomogeneous1D::create),
            GetDiffusionFactory().RegisterCreatorFunction(
                "LFRHUNS3DHomogeneous1D",   Diffusion3DHomogeneous1D::create),
            GetDiffusionFactory().RegisterCreatorFunction(
                "LFRcminNS3DHomogeneous1D", Diffusion3DHomogeneous1D::create),
            GetDiffusionFactory().RegisterCreatorFunction(
                "LFRcinfNS3DHomogeneous1D", Diffusion3DHomogeneous1D::create)
        }

Definition at line 54 of file Diffusion3DHomogeneous1D.h.