Nektar::AdjointAdvection Class Reference

Advection for the adjoint form of the linearised Navier-Stokes equations. More...

#include <AdjointAdvection.h>

Inheritance diagram for Nektar::AdjointAdvection:

Collaboration diagram for Nektar::AdjointAdvection:

Static Public Member Functions
static SolverUtils::AdvectionSharedPtr	create (std::string)
	Creates an instance of this class. More...
Static Public Member Functions inherited from Nektar::LinearisedAdvection
static SolverUtils::AdvectionSharedPtr	create (std::string)
	Creates an instance of this class. More...

Static Public Attributes
static std::string	className
	Name of class. More...
Static Public Attributes inherited from Nektar::LinearisedAdvection
static std::string	className
	Name of class. More...

Protected Member Functions
	AdjointAdvection ()
virtual	~AdjointAdvection ()
virtual void	v_Advect (const int nConvectiveFields, const Array< OneD, MultiRegions::ExpListSharedPtr > &fields, const Array< OneD, Array< OneD, NekDouble > > &advVel, const Array< OneD, Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &outarray, const NekDouble &time, const Array< OneD, Array< OneD, NekDouble > > &pFwd=NullNekDoubleArrayofArray, const Array< OneD, Array< OneD, NekDouble > > &pBwd=NullNekDoubleArrayofArray)
	Advects a vector field. More...
Protected Member Functions inherited from Nektar::LinearisedAdvection
DNekBlkMatSharedPtr	GetFloquetBlockMatrix (FloquetMatType mattype, bool UseContCoeffs=false) const
DNekBlkMatSharedPtr	GenFloquetBlockMatrix (FloquetMatType mattype, bool UseContCoeffs=false) const
	LinearisedAdvection ()
virtual	~LinearisedAdvection ()
virtual void	v_InitObject (LibUtilities::SessionReaderSharedPtr pSession, Array< OneD, MultiRegions::ExpListSharedPtr > pFields)
	Initialises the advection object. More...
virtual void	v_SetBaseFlow (const Array< OneD, Array< OneD, NekDouble > > &inarray, const Array< OneD, MultiRegions::ExpListSharedPtr > &fields)
	Overrides the base flow used during linearised advection. More...
void	UpdateBase (const NekDouble m_slices, const Array< OneD, const NekDouble > &inarray, Array< OneD, NekDouble > &outarray, const NekDouble m_time, const NekDouble m_period)
void	UpdateGradBase (const int var, const MultiRegions::ExpListSharedPtr &field)
void	DFT (const std::string file, Array< OneD, MultiRegions::ExpListSharedPtr > &pFields, const NekDouble m_slices)
void	ImportFldBase (std::string pInfile, Array< OneD, MultiRegions::ExpListSharedPtr > &pFields, int slice)
	Import Base flow. More...

Friends
class	MemoryManager< AdjointAdvection >

Additional Inherited Members
Public Member Functions inherited from Nektar::SolverUtils::Advection
SOLVER_UTILS_EXPORT void	InitObject (LibUtilities::SessionReaderSharedPtr pSession, Array< OneD, MultiRegions::ExpListSharedPtr > pFields)
	Interface function to initialise the advection object. More...
SOLVER_UTILS_EXPORT void	Advect (const int nConvectiveFields, const Array< OneD, MultiRegions::ExpListSharedPtr > &fields, const Array< OneD, Array< OneD, NekDouble > > &advVel, const Array< OneD, Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &outarray, const NekDouble &time, const Array< OneD, Array< OneD, NekDouble > > &pFwd=NullNekDoubleArrayofArray, const Array< OneD, Array< OneD, NekDouble > > &pBwd=NullNekDoubleArrayofArray)
	Interface function to advect the vector field. More...
template<typename FuncPointerT , typename ObjectPointerT >
void	SetFluxVector (FuncPointerT func, ObjectPointerT obj)
	Set the flux vector callback function. More...
void	SetRiemannSolver (RiemannSolverSharedPtr riemann)
	Set a Riemann solver object for this advection object. More...
void	SetFluxVector (AdvectionFluxVecCB fluxVector)
	Set the flux vector callback function. More...
void	SetBaseFlow (const Array< OneD, Array< OneD, NekDouble > > &inarray, const Array< OneD, MultiRegions::ExpListSharedPtr > &fields)
	Set the base flow used for linearised advection objects. More...
Protected Attributes inherited from Nektar::LinearisedAdvection
LibUtilities::SessionReaderSharedPtr	m_session
int	m_spacedim
int	m_expdim
Array< OneD, Array< OneD, NekDouble > >	m_baseflow
	Storage for base flow. More...
Array< OneD, Array< OneD, NekDouble > >	m_gradBase
int	m_slices
	number of slices More...
NekDouble	m_period
	period length More...
Array< OneD, Array< OneD, NekDouble > >	m_interp
	interpolation vector More...
LibUtilities::NektarFFTSharedPtr	m_FFT
	auxiliary variables More...
Array< OneD, NekDouble >	m_tmpIN
Array< OneD, NekDouble >	m_tmpOUT
bool	m_useFFTW
bool	m_singleMode
	flag to determine if use single mode or not More...
bool	m_halfMode
	flag to determine if use half mode or not More...
bool	m_multipleModes
	flag to determine if use multiple mode or not More...
FloquetBlockMatrixMapShPtr	m_FloquetBlockMat
Protected Attributes inherited from Nektar::SolverUtils::Advection
AdvectionFluxVecCB	m_fluxVector
	Callback function to the flux vector (set when advection is in conservative form). More...
RiemannSolverSharedPtr	m_riemann
	Riemann solver for DG-type schemes. More...
int	m_spaceDim
	Storage for space dimension. Used for homogeneous extension. More...

Detailed Description

Advection for the adjoint form of the linearised Navier-Stokes equations.

Definition at line 46 of file AdjointAdvection.h.

Constructor & Destructor Documentation

Nektar::AdjointAdvection::AdjointAdvection ( )

protected

Definition at line 50 of file AdjointAdvection.cpp.

                                  :
    LinearisedAdvection()
{
}

Nektar::AdjointAdvection::~AdjointAdvection ( )

protectedvirtual

Definition at line 55 of file AdjointAdvection.cpp.

{
}

Member Function Documentation

static SolverUtils::AdvectionSharedPtr Nektar::AdjointAdvection::create ( std::string  )

inlinestatic

Creates an instance of this class.

Definition at line 52 of file AdjointAdvection.h.

References Nektar::MemoryManager< DataType >::AllocateSharedPtr().

    {
        return MemoryManager<AdjointAdvection>::AllocateSharedPtr();
    }

void Nektar::AdjointAdvection::v_Advect ( const int  nConvectiveFields, const Array< OneD, MultiRegions::ExpListSharedPtr > &  fields, const Array< OneD, Array< OneD, NekDouble > > &  advVel, const Array< OneD, Array< OneD, NekDouble > > &  inarray, Array< OneD, Array< OneD, NekDouble > > &  outarray, const NekDouble &  time, const Array< OneD, Array< OneD, NekDouble > > &  pFwd = NullNekDoubleArrayofArray, const Array< OneD, Array< OneD, NekDouble > > &  pBwd = NullNekDoubleArrayofArray  )

protectedvirtual

Advects a vector field.

Reimplemented from Nektar::LinearisedAdvection.

Definition at line 59 of file AdjointAdvection.cpp.

References ASSERTL1, Nektar::LinearisedAdvection::m_baseflow, Nektar::LinearisedAdvection::m_gradBase, Nektar::LinearisedAdvection::m_halfMode, Nektar::LinearisedAdvection::m_interp, Nektar::LinearisedAdvection::m_multipleModes, Nektar::LinearisedAdvection::m_period, Nektar::LinearisedAdvection::m_singleMode, Nektar::LinearisedAdvection::m_slices, Nektar::LinearisedAdvection::m_spacedim, Vmath::Neg(), Nektar::LinearisedAdvection::UpdateBase(), Nektar::LinearisedAdvection::UpdateGradBase(), Vmath::Vmul(), and Vmath::Vvtvp().

{
    ASSERTL1(nConvectiveFields == inarray.num_elements(),
             "Number of convective fields and Inarray are not compatible");

    int nPointsTot  = fields[0]->GetNpoints();
    int ndim        = advVel.num_elements();
    int nBaseDerivs = (m_halfMode || m_singleMode) ? 2 : m_spacedim;
    int nDerivs     = (m_halfMode) ? 2 : m_spacedim;

    Array<OneD, Array<OneD, NekDouble> > velocity(ndim);
    for(int i = 0; i < ndim; ++i)
    {
        if(fields[i]->GetWaveSpace() && !m_singleMode && !m_halfMode)
        {
            velocity[i] = Array<OneD, NekDouble>(nPointsTot,0.0);
            fields[i]->HomogeneousBwdTrans(advVel[i],velocity[i]);
        }
        else
        {
            velocity[i] = advVel[i];
        }
    }

    Array<OneD, Array<OneD, NekDouble> > grad (nDerivs);
    for( int i = 0; i < nDerivs; ++i)
    {
        grad[i] = Array<OneD, NekDouble> (nPointsTot);
    }

    // Evaluation of the base flow for periodic cases
    if (m_slices > 1)
    {
        for (int i = 0; i < ndim; ++i)
        {
            UpdateBase(m_slices, m_interp[i], m_baseflow[i],
                       time, m_period);
            UpdateGradBase(i, fields[i]);
        }
    }

    //Evaluate the linearised advection term
    for( int i = 0; i < ndim; ++i)
    {
        // Calculate gradient
        switch(nDerivs)
        {
            case 1:
            {
                fields[i]->PhysDeriv(inarray[i], grad[0]);
            }
            break;
            case 2:
            {
                fields[i]->PhysDeriv(inarray[i], grad[0], grad[1]);
            }
            break;
            case 3:
            {
                fields[i]->PhysDeriv(inarray[i], grad[0], grad[1], grad[2]);
                if(m_multipleModes)
                {
                    // transform gradients into physical Fourier space
                    fields[i]->HomogeneousBwdTrans(grad[0], grad[0]);
                    fields[i]->HomogeneousBwdTrans(grad[1], grad[1]);
                    fields[i]->HomogeneousBwdTrans(grad[2], grad[2]);
                }
            }
            break;
        }

        // Calculate -U_j du'_i/dx_j
        Vmath::Vmul(nPointsTot,grad[0], 1, m_baseflow[0], 1, outarray[i], 1);
        for( int j = 1; j < nDerivs; ++j)
        {
            Vmath::Vvtvp(nPointsTot,grad[j], 1,
                                    m_baseflow[j], 1,
                                    outarray[i], 1,
                                    outarray[i], 1);
        }
        Vmath::Neg(nPointsTot,outarray[i],1);

        // Add u'_j U_j/ dx_i
        int lim = (m_halfMode) ? 2 : ndim;
        if ( (m_halfMode || m_singleMode) && i==2)
        {
            lim = 0;
        }
        for( int j = 0; j < lim; ++j)
        {
            Vmath::Vvtvp(nPointsTot,m_gradBase[j*nBaseDerivs + i], 1,
                                    velocity[j], 1,
                                    outarray[i], 1,
                                    outarray[i], 1);
        }

        if(m_multipleModes)
        {
            fields[i]->HomogeneousFwdTrans(outarray[i],outarray[i]);
        }
        Vmath::Neg(nPointsTot,outarray[i],1);
    }
}

Friends And Related Function Documentation

friend class MemoryManager< AdjointAdvection >

friend

Definition at line 49 of file AdjointAdvection.h.

Member Data Documentation

string Nektar::AdjointAdvection::className

static

Initial value:

= SolverUtils
        ::GetAdvectionFactory().RegisterCreatorFunction("Adjoint",
                                                    AdjointAdvection::create)

Name of class.

Definition at line 58 of file AdjointAdvection.h.