blackoillocalresidual.hh

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// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
// vi: set et ts=4 sw=4 sts=4:
/*
  Copyright (C) 2011-2013 by Andreas Lauser

  This file is part of the Open Porous Media project (OPM).

  OPM is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 2 of the License, or
  (at your option) any later version.

  OPM is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with OPM.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef EWOMS_BLACK_OIL_LOCAL_RESIDUAL_HH
#define EWOMS_BLACK_OIL_LOCAL_RESIDUAL_HH

#include "blackoilproperties.hh"

namespace Ewoms {
template <class TypeTag>
class BlackOilLocalResidual : public GET_PROP_TYPE(TypeTag, DiscLocalResidual)
{
    typedef typename GET_PROP_TYPE(TypeTag, IntensiveQuantities) IntensiveQuantities;
    typedef typename GET_PROP_TYPE(TypeTag, ExtensiveQuantities) ExtensiveQuantities;
    typedef typename GET_PROP_TYPE(TypeTag, ElementContext) ElementContext;
    typedef typename GET_PROP_TYPE(TypeTag, Indices) Indices;
    typedef typename GET_PROP_TYPE(TypeTag, Evaluation) Evaluation;
    typedef typename GET_PROP_TYPE(TypeTag, EqVector) EqVector;
    typedef typename GET_PROP_TYPE(TypeTag, RateVector) RateVector;

    enum { conti0EqIdx = Indices::conti0EqIdx };
    enum { numEq = GET_PROP_VALUE(TypeTag, NumEq) };
    enum { numPhases = GET_PROP_VALUE(TypeTag, NumPhases) };
    enum { numComponents = GET_PROP_VALUE(TypeTag, NumComponents) };

    typedef Opm::MathToolbox<Evaluation> Toolbox;

public:
    template <class LhsEval>
    void computeStorage(Dune::FieldVector<LhsEval, numEq> &storage,
                        const ElementContext &elemCtx,
                        int dofIdx,
                        int timeIdx) const
    {
#ifndef NDEBUG
        typedef Opm::MathToolbox<LhsEval> LhsToolbox;
#endif

        // retrieve the intensive quantities for the SCV at the specified point in time
        const IntensiveQuantities &intQuants = elemCtx.intensiveQuantities(dofIdx, timeIdx);

        for (int eqIdx = 0; eqIdx < numEq; ++eqIdx)
            storage[eqIdx] = 0.0;

        for (int phaseIdx = 0; phaseIdx < numPhases; ++phaseIdx) {
            for (int compIdx = 0; compIdx < numComponents; ++compIdx) {
                storage[conti0EqIdx + compIdx] +=
                    Toolbox::template toLhs<LhsEval>(intQuants.porosity())
                    * Toolbox::template toLhs<LhsEval>(intQuants.fluidState().saturation(phaseIdx))
                    * Toolbox::template toLhs<LhsEval>(intQuants.fluidState().molarity(phaseIdx, compIdx));
                assert(std::isfinite(LhsToolbox::value(storage[conti0EqIdx + compIdx])));
            }
        }
    }

    void computeFlux(RateVector &flux,
                     const ElementContext &elemCtx,
                     int scvfIdx,
                     int timeIdx) const
    {
        assert(timeIdx == 0);

        const ExtensiveQuantities &extQuants = elemCtx.extensiveQuantities(scvfIdx, timeIdx);

        for (int eqIdx=0; eqIdx < numEq; eqIdx++)
            flux[eqIdx] = 0;

        int interiorIdx = extQuants.interiorIndex();
        for (int phaseIdx = 0; phaseIdx < numPhases; ++phaseIdx) {
            int upIdx = extQuants.upstreamIndex(phaseIdx);
            const IntensiveQuantities &up = elemCtx.intensiveQuantities(upIdx, /*timeIdx=*/0);

            // this is a bit hacky because it is specific to the element-centered
            // finite volume scheme. (N.B. that if finite differences are used to
            // linearize the system of equations, it does not matter.)
            if (upIdx == interiorIdx) {
                Evaluation tmp =
                    up.fluidState().molarDensity(phaseIdx)
                    * extQuants.volumeFlux(phaseIdx);

                for (int compIdx = 0; compIdx < numComponents; ++compIdx) {
                    flux[conti0EqIdx + compIdx] +=
                        tmp*up.fluidState().moleFraction(phaseIdx, compIdx);
                }
            }
            else {
                Evaluation tmp =
                    Toolbox::value(up.fluidState().molarDensity(phaseIdx))
                    * extQuants.volumeFlux(phaseIdx);

                for (int compIdx = 0; compIdx < numComponents; ++compIdx) {
                    flux[conti0EqIdx + compIdx] +=
                        tmp*Toolbox::value(up.fluidState().moleFraction(phaseIdx, compIdx));
                }
            }
        }
    }

    void computeSource(RateVector &source,
                       const ElementContext &elemCtx,
                       int dofIdx,
                       int timeIdx) const
    {
        // retrieve the source term intrinsic to the problem
        elemCtx.problem().source(source, elemCtx, dofIdx, timeIdx);
    }
};

} // namespace Ewoms

#endif