Nektar::CompressibleSolver Class Reference

#include <CompressibleSolver.h>

Inheritance diagram for Nektar::CompressibleSolver:

Protected Member Functions
	CompressibleSolver (const LibUtilities::SessionReaderSharedPtr &pSession)
virtual void	v_Solve (const int nDim, const Array< OneD, const Array< OneD, NekDouble > > &Fwd, const Array< OneD, const Array< OneD, NekDouble > > &Bwd, Array< OneD, Array< OneD, NekDouble > > &flux)
virtual void	v_ArraySolve (const Array< OneD, const Array< OneD, NekDouble > > &Fwd, const Array< OneD, const Array< OneD, NekDouble > > &Bwd, Array< OneD, Array< OneD, NekDouble > > &flux)
virtual void	v_PointSolve (NekDouble rhoL, NekDouble rhouL, NekDouble rhovL, NekDouble rhowL, NekDouble EL, NekDouble rhoR, NekDouble rhouR, NekDouble rhovR, NekDouble rhowR, NekDouble ER, NekDouble &rhof, NekDouble &rhouf, NekDouble &rhovf, NekDouble &rhowf, NekDouble &Ef)
virtual void	v_PointSolveVisc (NekDouble rhoL, NekDouble rhouL, NekDouble rhovL, NekDouble rhowL, NekDouble EL, NekDouble EpsL, NekDouble rhoR, NekDouble rhouR, NekDouble rhovR, NekDouble rhowR, NekDouble ER, NekDouble EpsR, NekDouble &rhof, NekDouble &rhouf, NekDouble &rhovf, NekDouble &rhowf, NekDouble &Ef, NekDouble &Epsf)
NekDouble	GetRoeSoundSpeed (NekDouble rhoL, NekDouble pL, NekDouble eL, NekDouble HL, NekDouble srL, NekDouble rhoR, NekDouble pR, NekDouble eR, NekDouble HR, NekDouble srR, NekDouble HRoe, NekDouble URoe2, NekDouble srLR)
Protected Member Functions inherited from Nektar::SolverUtils::RiemannSolver
SOLVER_UTILS_EXPORT	RiemannSolver (const LibUtilities::SessionReaderSharedPtr &pSession)
virtual SOLVER_UTILS_EXPORT	~RiemannSolver ()
void	GenerateRotationMatrices (const Array< OneD, const Array< OneD, NekDouble > > &normals)
	Generate rotation matrices for 3D expansions. More...
void	FromToRotation (Array< OneD, const NekDouble > &from, Array< OneD, const NekDouble > &to, NekDouble *mat)
	A function for creating a rotation matrix that rotates a vector from into another vector to. More...
SOLVER_UTILS_EXPORT void	rotateToNormal (const Array< OneD, const Array< OneD, NekDouble > > &inarray, const Array< OneD, const Array< OneD, NekDouble > > &normals, const Array< OneD, const Array< OneD, NekDouble > > &vecLocs, Array< OneD, Array< OneD, NekDouble > > &outarray)
	Rotate a vector field to trace normal. More...
SOLVER_UTILS_EXPORT void	rotateFromNormal (const Array< OneD, const Array< OneD, NekDouble > > &inarray, const Array< OneD, const Array< OneD, NekDouble > > &normals, const Array< OneD, const Array< OneD, NekDouble > > &vecLocs, Array< OneD, Array< OneD, NekDouble > > &outarray)
	Rotate a vector field from trace normal. More...
SOLVER_UTILS_EXPORT bool	CheckScalars (std::string name)
	Determine whether a scalar has been defined in m_scalars. More...
SOLVER_UTILS_EXPORT bool	CheckVectors (std::string name)
	Determine whether a vector has been defined in m_vectors. More...
SOLVER_UTILS_EXPORT bool	CheckParams (std::string name)
	Determine whether a parameter has been defined in m_params. More...
SOLVER_UTILS_EXPORT bool	CheckAuxScal (std::string name)
	Determine whether a scalar has been defined in m_auxScal. More...
SOLVER_UTILS_EXPORT bool	CheckAuxVec (std::string name)
	Determine whether a vector has been defined in m_auxVec. More...

Protected Attributes
bool	m_pointSolve
EquationOfStateSharedPtr	m_eos
bool	m_idealGas
Protected Attributes inherited from Nektar::SolverUtils::RiemannSolver
bool	m_requiresRotation
	Indicates whether the Riemann solver requires a rotation to be applied to the velocity fields. More...
std::map< std::string, RSScalarFuncType >	m_scalars
	Map of scalar function types. More...
std::map< std::string, RSVecFuncType >	m_vectors
	Map of vector function types. More...
std::map< std::string, RSParamFuncType >	m_params
	Map of parameter function types. More...
std::map< std::string, RSScalarFuncType >	m_auxScal
	Map of auxiliary scalar function types. More...
std::map< std::string, RSVecFuncType >	m_auxVec
	Map of auxiliary vector function types. More...
Array< OneD, Array< OneD, NekDouble > >	m_rotMat
	Rotation matrices for each trace quadrature point. More...
Array< OneD, Array< OneD, Array< OneD, NekDouble > > >	m_rotStorage
	Rotation storage. More...

Additional Inherited Members
Public Member Functions inherited from Nektar::SolverUtils::RiemannSolver
SOLVER_UTILS_EXPORT void	Solve (const int nDim, const Array< OneD, const Array< OneD, NekDouble > > &Fwd, const Array< OneD, const Array< OneD, NekDouble > > &Bwd, Array< OneD, Array< OneD, NekDouble > > &flux)
	Perform the Riemann solve given the forwards and backwards spaces. More...
template<typename FuncPointerT , typename ObjectPointerT >
void	SetScalar (std::string name, FuncPointerT func, ObjectPointerT obj)
void	SetScalar (std::string name, RSScalarFuncType fp)
template<typename FuncPointerT , typename ObjectPointerT >
void	SetVector (std::string name, FuncPointerT func, ObjectPointerT obj)
void	SetVector (std::string name, RSVecFuncType fp)
template<typename FuncPointerT , typename ObjectPointerT >
void	SetParam (std::string name, FuncPointerT func, ObjectPointerT obj)
void	SetParam (std::string name, RSParamFuncType fp)
template<typename FuncPointerT , typename ObjectPointerT >
void	SetAuxScal (std::string name, FuncPointerT func, ObjectPointerT obj)
template<typename FuncPointerT , typename ObjectPointerT >
void	SetAuxVec (std::string name, FuncPointerT func, ObjectPointerT obj)
std::map< std::string, RSScalarFuncType > &	GetScalars ()
std::map< std::string, RSVecFuncType > &	GetVectors ()
std::map< std::string, RSParamFuncType > &	GetParams ()
Public Attributes inherited from Nektar::SolverUtils::RiemannSolver
int	m_spacedim

Detailed Description

Definition at line 47 of file CompressibleSolver.h.

Constructor & Destructor Documentation

CompressibleSolver()

Nektar::CompressibleSolver::CompressibleSolver ( const LibUtilities::SessionReaderSharedPtr &  pSession )

protected

Definition at line 41 of file CompressibleSolver.cpp.

        : RiemannSolver(pSession), m_pointSolve(true)
    {
        m_requiresRotation = true;
 
        // Create equation of state object
        std::string eosType;
        pSession->LoadSolverInfo("EquationOfState",
                                  eosType, "IdealGas");
        m_eos = GetEquationOfStateFactory()
                                .CreateInstance(eosType, pSession);
        // Check if using ideal gas
        m_idealGas = boost::iequals(eosType,"IdealGas");
    }

References Nektar::LibUtilities::NekFactory< tKey, tBase, tParam >::CreateInstance(), Nektar::GetEquationOfStateFactory(), m_eos, m_idealGas, and Nektar::SolverUtils::RiemannSolver::m_requiresRotation.

Member Function Documentation

GetRoeSoundSpeed()

NekDouble Nektar::CompressibleSolver::GetRoeSoundSpeed ( NekDouble  rhoL, NekDouble  pL, NekDouble  eL, NekDouble  HL, NekDouble  srL, NekDouble  rhoR, NekDouble  pR, NekDouble  eR, NekDouble  HR, NekDouble  srR, NekDouble  HRoe, NekDouble  URoe2, NekDouble  srLR  )

protected

Definition at line 133 of file CompressibleSolver.cpp.

    {
        boost::ignore_unused(HL, srL, HR, srR, srLR);
 
        static NekDouble gamma = m_params["gamma"]();
        NekDouble cRoe;
        if(m_idealGas)
        {
            cRoe = sqrt((gamma - 1.0)*(HRoe - 0.5 * URoe2));
        }
        else
        {
            // Calculate static enthalpy of left and right states
            NekDouble hL = eL + pL/rhoL;
            NekDouble hR = eR + pR/rhoR;
 
            // Get partial derivatives of P(rho,e)
            NekDouble dpdeL   = m_eos->GetDPDe_rho(rhoL,eL);
            NekDouble dpdeR   = m_eos->GetDPDe_rho(rhoR,eR);
            NekDouble dpdrhoL = m_eos->GetDPDrho_e(rhoL,eL);
            NekDouble dpdrhoR = m_eos->GetDPDrho_e(rhoR,eR);
 
            // Evaluate chi and kappa parameters
            NekDouble chiL    = dpdrhoL - eL / rhoL * dpdeL;
            NekDouble kappaL  = dpdeL / rhoL;
            NekDouble chiR    = dpdrhoR - eR / rhoR * dpdeR;
            NekDouble kappaR  = dpdeR / rhoR;
 
            //
            // Calculate interface speed of sound using procedure from
            //    Vinokur, M.; Montagné, J.-L. "Generalized Flux-Vector
            //    Splitting and Roe Average for an Equilibrium Real Gas",
            //    JCP (1990).
            //
 
            // Calculate averages
            NekDouble avgChi    = 0.5 * (chiL      + chiR);
            NekDouble avgKappa  = 0.5 * (kappaL    + kappaR);
            NekDouble avgKappaH = 0.5 * (kappaL*hL + kappaR*hR);
 
            // Calculate jumps
            NekDouble deltaP    = pR      - pL;
            NekDouble deltaRho  = rhoR    - rhoL;
            NekDouble deltaRhoe = rhoR*eR - rhoL*eL;
 
            // Evaluate dP: equation (64) from Vinokur-Montagné
            NekDouble dP = deltaP - avgChi * deltaRho - avgKappa * deltaRhoe;
            // s (eq 66)
            NekDouble s  = avgChi + avgKappaH;
            // D (eq 65)
            NekDouble D  = (s*deltaRho)*(s*deltaRho) + deltaP*deltaP;
            // chiRoe and kappaRoe (eq 66)
            NekDouble chiRoe, kappaRoe;
            NekDouble fac = D - deltaP*deltaRho;
            if( std::abs(fac) > NekConstants::kNekZeroTol)
            {
                chiRoe   = (D*avgChi + s*s*deltaRho*dP) / fac;
                kappaRoe = D*avgKappa / fac;
            }
            else
            {
                chiRoe = avgChi;
                kappaRoe = avgKappa;
            }
            // Speed of sound (eq 53)
            cRoe = sqrt( chiRoe + kappaRoe*(HRoe - 0.5 * URoe2));
        }
        return cRoe;
    }

References Nektar::NekConstants::kNekZeroTol, m_eos, m_idealGas, and Nektar::SolverUtils::RiemannSolver::m_params.

Referenced by Nektar::HLLSolver::v_PointSolve(), Nektar::LaxFriedrichsSolver::v_PointSolve(), Nektar::HLLCSolver::v_PointSolve(), and Nektar::HLLCSolver::v_PointSolveVisc().

v_ArraySolve()

virtual void Nektar::CompressibleSolver::v_ArraySolve ( const Array< OneD, const Array< OneD, NekDouble > > &  Fwd, const Array< OneD, const Array< OneD, NekDouble > > &  Bwd, Array< OneD, Array< OneD, NekDouble > > &  flux  )

inlineprotectedvirtual

Reimplemented in Nektar::AverageSolver.

Definition at line 63 of file CompressibleSolver.h.

        {
            boost::ignore_unused(Fwd, Bwd, flux);
            NEKERROR(ErrorUtil::efatal,
                     "This function should be defined by subclasses.");
        }

References Nektar::ErrorUtil::efatal, and NEKERROR.

Referenced by v_Solve().

v_PointSolve()

virtual void Nektar::CompressibleSolver::v_PointSolve ( NekDouble  rhoL, NekDouble  rhouL, NekDouble  rhovL, NekDouble  rhowL, NekDouble  EL, NekDouble  rhoR, NekDouble  rhouR, NekDouble  rhovR, NekDouble  rhowR, NekDouble  ER, NekDouble &  rhof, NekDouble &  rhouf, NekDouble &  rhovf, NekDouble &  rhowf, NekDouble &  Ef  )

inlineprotectedvirtual

Reimplemented in Nektar::HLLCSolver, Nektar::ExactSolverToro, Nektar::RoeSolver, Nektar::LaxFriedrichsSolver, Nektar::HLLSolver, Nektar::AUSM3Solver, Nektar::AUSM2Solver, Nektar::AUSM1Solver, and Nektar::AUSM0Solver.

Definition at line 73 of file CompressibleSolver.h.

        {
            boost::ignore_unused(rhoL, rhouL, rhovL, rhowL, EL,
                                 rhoR, rhouR, rhovR, rhowR, ER,
                                 rhof, rhouf, rhovf, rhowf, Ef);
            NEKERROR(ErrorUtil::efatal,
                     "This function should be defined by subclasses.");
        }

References Nektar::ErrorUtil::efatal, and NEKERROR.

Referenced by v_Solve().

v_PointSolveVisc()

virtual void Nektar::CompressibleSolver::v_PointSolveVisc ( NekDouble  rhoL, NekDouble  rhouL, NekDouble  rhovL, NekDouble  rhowL, NekDouble  EL, NekDouble  EpsL, NekDouble  rhoR, NekDouble  rhouR, NekDouble  rhovR, NekDouble  rhowR, NekDouble  ER, NekDouble  EpsR, NekDouble &  rhof, NekDouble &  rhouf, NekDouble &  rhovf, NekDouble &  rhowf, NekDouble &  Ef, NekDouble &  Epsf  )

inlineprotectedvirtual

Reimplemented in Nektar::HLLCSolver.

Definition at line 85 of file CompressibleSolver.h.

        {
            boost::ignore_unused(rhoL, rhouL, rhovL, rhowL, EL, EpsL,
                                 rhoR, rhouR, rhovR, rhowR, ER, EpsR,
                                 rhof, rhouf, rhovf, rhowf, Ef, Epsf);
            NEKERROR(ErrorUtil::efatal,
                     "This function should be defined by subclasses.");
        }

References Nektar::ErrorUtil::efatal, and NEKERROR.

Referenced by v_Solve().

v_Solve()

void Nektar::CompressibleSolver::v_Solve ( const int  nDim, const Array< OneD, const Array< OneD, NekDouble > > &  Fwd, const Array< OneD, const Array< OneD, NekDouble > > &  Bwd, Array< OneD, Array< OneD, NekDouble > > &  flux  )

protectedvirtual

Implements Nektar::SolverUtils::RiemannSolver.

Definition at line 57 of file CompressibleSolver.cpp.

    {
        if (m_pointSolve)
        {
            int expDim      = nDim;
            int nvariables  = Fwd.num_elements();
            
            NekDouble rhouf, rhovf;
            
            // Check if PDE-based SC is used
            if (expDim == 1)
            {
                for (int i = 0; i < Fwd[0].num_elements(); ++i)
                {
                    v_PointSolve(
                        Fwd [0][i], Fwd [1][i], 0.0,   0.0,   Fwd [2][i],
                        Bwd [0][i], Bwd [1][i], 0.0,   0.0,   Bwd [2][i],
                        flux[0][i], flux[1][i], rhouf, rhovf, flux[2][i]);
                }
            }
            else if (expDim == 2)
            {
                if (nvariables == expDim+2)
                {
                    for (int i = 0; i < Fwd[0].num_elements(); ++i)
                    {
                        v_PointSolve(
                            Fwd [0][i], Fwd [1][i], Fwd [2][i], 0.0,   Fwd [3][i],
                            Bwd [0][i], Bwd [1][i], Bwd [2][i], 0.0,   Bwd [3][i],
                            flux[0][i], flux[1][i], flux[2][i], rhovf, flux[3][i]);
                    }
                }
                
                if (nvariables > expDim+2)
                {
                    for (int i = 0; i < Fwd[0].num_elements(); ++i)
                    {
                        v_PointSolveVisc(
                            Fwd [0][i], Fwd [1][i], Fwd [2][i], 0.0, Fwd [3][i], Fwd [4][i],
                            Bwd [0][i], Bwd [1][i], Bwd [2][i], 0.0, Bwd [3][i], Bwd [4][i],
                            flux[0][i], flux[1][i], flux[2][i], rhovf, flux[3][i], flux[4][i]);
                    }
                }
                
            }
            else if (expDim == 3)
            {
                for (int i = 0; i < Fwd[0].num_elements(); ++i)
                {
                    v_PointSolve(
                        Fwd [0][i], Fwd [1][i], Fwd [2][i], Fwd [3][i], Fwd [4][i],
                        Bwd [0][i], Bwd [1][i], Bwd [2][i], Bwd [3][i], Bwd [4][i],
                        flux[0][i], flux[1][i], flux[2][i], flux[3][i], flux[4][i]);
                }
                if (nvariables > expDim+2)
                {
                    for (int i = 0; i < Fwd[0].num_elements(); ++i)
                    {
                        v_PointSolveVisc(
                            Fwd [0][i], Fwd [1][i], Fwd [2][i], Fwd [3][i], Fwd [4][i], Fwd [5][i],
                            Bwd [0][i], Bwd [1][i], Bwd [2][i], Bwd [3][i], Bwd [4][i], Bwd [5][i],
                            flux[0][i], flux[1][i], flux[2][i], flux[3][i], flux[4][i], flux[5][i]);
                    }
                }
            }
        }
        else
        {
            v_ArraySolve(Fwd, Bwd, flux);
        }
    }

References m_pointSolve, v_ArraySolve(), v_PointSolve(), and v_PointSolveVisc().

Member Data Documentation

m_eos

EquationOfStateSharedPtr Nektar::CompressibleSolver::m_eos

protected

Definition at line 51 of file CompressibleSolver.h.

Referenced by CompressibleSolver(), GetRoeSoundSpeed(), Nektar::AverageSolver::v_ArraySolve(), Nektar::AUSM0Solver::v_PointSolve(), Nektar::AUSM1Solver::v_PointSolve(), Nektar::AUSM2Solver::v_PointSolve(), Nektar::AUSM3Solver::v_PointSolve(), Nektar::HLLSolver::v_PointSolve(), Nektar::LaxFriedrichsSolver::v_PointSolve(), Nektar::HLLCSolver::v_PointSolve(), and Nektar::HLLCSolver::v_PointSolveVisc().

m_idealGas

bool Nektar::CompressibleSolver::m_idealGas

protected

Definition at line 52 of file CompressibleSolver.h.

Referenced by CompressibleSolver(), and GetRoeSoundSpeed().

m_pointSolve

bool Nektar::CompressibleSolver::m_pointSolve

protected

Definition at line 50 of file CompressibleSolver.h.

Referenced by Nektar::AverageSolver::AverageSolver(), and v_Solve().