ExtrapOrder0BC.h

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///////////////////////////////////////////////////////////////////////////////
//
// File: ExtrapOrder0BC.h
//
// For more information, please see: http://www.nektar.info
//
// The MIT License
//
// Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
// Department of Aeronautics, Imperial College London (UK), and Scientific
// Computing and Imaging Institute, University of Utah (USA).
//
// License for the specific language governing rights and limitations under
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
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// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included
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//
// Description: Extrapolation of order 0 boundary condition
//
///////////////////////////////////////////////////////////////////////////////

#ifndef NEKTAR_SOLVERS_COMPRESSIBLEFLOWSOLVER_BNDCOND_EXTRAPORDER0BC
#define NEKTAR_SOLVERS_COMPRESSIBLEFLOWSOLVER_BNDCOND_EXTRAPORDER0BC

#include "CFSBndCond.h"


namespace Nektar
{

/**
 * @brief Extrapolation of order 0 for all the variables such that,
 * at the boundaries, a trivial Riemann problem is solved.
 */
class ExtrapOrder0BC : public CFSBndCond
{
    public:

        friend class MemoryManager<ExtrapOrder0BC>;

        /// Creates an instance of this class
        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)
        {
            CFSBndCondSharedPtr p = MemoryManager<ExtrapOrder0BC>::
                                    AllocateSharedPtr(pSession, pFields,
                                    pTraceNormals, pSpaceDim, bcRegion, cnt);
            return p;
        }

        ///Name of the class
        static std::string className;

    protected:

        virtual void v_Apply(
            Array<OneD, Array<OneD, NekDouble> >               &Fwd,
            Array<OneD, Array<OneD, NekDouble> >               &physarray,
            const NekDouble                                    &time);

    private:
        ExtrapOrder0BC(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 ~ExtrapOrder0BC(void){};
};

}

#endif