opm-simulators/opm/models/richards/richardslocalresidual.hh
2020-06-10 13:49:42 +02:00

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4.1 KiB
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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:
/*
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/>.
Consult the COPYING file in the top-level source directory of this
module for the precise wording of the license and the list of
copyright holders.
*/
/*!
* \file
*
* \copydoc Opm::RichardsLocalResidual
*/
#ifndef EWOMS_RICHARDS_LOCAL_RESIDUAL_HH
#define EWOMS_RICHARDS_LOCAL_RESIDUAL_HH
#include "richardsintensivequantities.hh"
#include "richardsextensivequantities.hh"
namespace Opm {
/*!
* \ingroup RichardsModel
* \brief Element-wise calculation of the residual for the Richards model.
*/
template <class TypeTag>
class RichardsLocalResidual : public GetPropType<TypeTag, Properties::DiscLocalResidual>
{
using EqVector = GetPropType<TypeTag, Properties::EqVector>;
using Evaluation = GetPropType<TypeTag, Properties::Evaluation>;
using RateVector = GetPropType<TypeTag, Properties::RateVector>;
using IntensiveQuantities = GetPropType<TypeTag, Properties::IntensiveQuantities>;
using ElementContext = GetPropType<TypeTag, Properties::ElementContext>;
using Indices = GetPropType<TypeTag, Properties::Indices>;
enum { contiEqIdx = Indices::contiEqIdx };
enum { liquidPhaseIdx = getPropValue<TypeTag, Properties::LiquidPhaseIndex>() };
enum { numEq = getPropValue<TypeTag, Properties::NumEq>() };
using Toolbox = Opm::MathToolbox<Evaluation>;
public:
/*!
* \copydoc ImmiscibleLocalResidual::computeStorage
*/
template <class LhsEval>
void computeStorage(Dune::FieldVector<LhsEval, numEq>& storage,
const ElementContext& elemCtx,
unsigned dofIdx,
unsigned timeIdx) const
{
const IntensiveQuantities& intQuants = elemCtx.intensiveQuantities(dofIdx, timeIdx);
// partial time derivative of the wetting phase mass
storage[contiEqIdx] =
Toolbox::template decay<LhsEval>(intQuants.fluidState().density(liquidPhaseIdx))
*Toolbox::template decay<LhsEval>(intQuants.fluidState().saturation(liquidPhaseIdx))
*Toolbox::template decay<LhsEval>(intQuants.porosity());
}
/*!
* \copydoc ImmiscibleLocalResidual::computeFlux
*/
void computeFlux(RateVector& flux,
const ElementContext& elemCtx,
unsigned scvfIdx,
unsigned timeIdx) const
{
const auto& extQuants = elemCtx.extensiveQuantities(scvfIdx, timeIdx);
unsigned focusDofIdx = elemCtx.focusDofIndex();
unsigned upIdx = static_cast<unsigned>(extQuants.upstreamIndex(liquidPhaseIdx));
const IntensiveQuantities& up = elemCtx.intensiveQuantities(upIdx, timeIdx);
// compute advective mass flux of the liquid phase. This is slightly hacky
// because it is specific to the element-centered finite volume method.
const Evaluation& rho = up.fluidState().density(liquidPhaseIdx);
if (focusDofIdx == upIdx)
flux[contiEqIdx] = extQuants.volumeFlux(liquidPhaseIdx)*rho;
else
flux[contiEqIdx] = extQuants.volumeFlux(liquidPhaseIdx)*Toolbox::value(rho);
}
/*!
* \copydoc ImmiscibleLocalResidual::computeSource
*/
void computeSource(RateVector& source,
const ElementContext& elemCtx,
unsigned dofIdx,
unsigned timeIdx) const
{ elemCtx.problem().source(source, elemCtx, dofIdx, timeIdx); }
};
} // namespace Opm
#endif