[fluidmatrixinteraction] add porosityreactivebed.hh

considers the porosity change due to the chemical reaction of
the solid material.

dumux/material/fluidmatrixinteractions/porosityreactivebed.hh

+// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+// vi: set et ts=4 sw=4 sts=4:
+/*****************************************************************************
+ *   See the file COPYING for full copying permissions.                      *
+ *                                                                           *
+ *   This program 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.                                     *
+ *                                                                           *
+ *   This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.   *
+ *****************************************************************************/
+/*!
+ * \file
+ *
+ * \brief Class for the evaluation of the porosity subject to precipitation.
+ */
+#ifndef DUMUX_POROSITY_REACTIVE_BED_HH
+#define DUMUX_POROSITY_REACTIVE_BED_HH
+
+#include <dumux/discretization/scvoperator.hh>
+
+namespace Dumux
+{
+
+/*!
+ * \ingroup fluidmatrixinteractionslaws
+ */
+
+/**
+ * \brief Calculates the porosity depeding on the volume fractions of different solid species.
+ */
+template<class TypeTag>
+class PorosityReactiveBed
+{
+    using Scalar = typename GET_PROP_TYPE(TypeTag, Scalar);
+    using Problem = typename GET_PROP_TYPE(TypeTag, Problem);
+    using GridView = typename GET_PROP_TYPE(TypeTag, GridView);
+    using SpatialParams = typename GET_PROP_TYPE(TypeTag, SpatialParams);
+    using ElementSolution = typename GET_PROP_TYPE(TypeTag, ElementSolutionVector);
+    using SubControlVolume = typename GET_PROP_TYPE(TypeTag, SubControlVolume);
+    using ScvOperator = SubControlVolumeOperator<TypeTag>;
+
+    static const int dim = GridView::dimension;
+    static const int dimWorld = GridView::dimensionworld;
+    static const int numComponents = GET_PROP_VALUE(TypeTag, NumComponents);
+    static const int numSolidPhases = GET_PROP_VALUE(TypeTag, NumSPhases);
+
+    using Element = typename GridView::template Codim<0>:: Entity;
+
+public:
+    void init(const SpatialParams& spatialParams)
+    {
+        spatialParamsPtr_ = &spatialParams;
+    }
+
+    // calculates the porosity in a sub-control volume
+    Scalar evaluatePorosity(const Element& element,
+                            const SubControlVolume& scv,
+                            const ElementSolution& elemSol) const
+    {
+        auto priVars = ScvOperator::evaluateSolution(element, scv, elemSol);
+
+        Scalar sumPrecipitates = 0.0;
+        for (unsigned int solidPhaseIdx = 0; solidPhaseIdx < numSolidPhases; ++solidPhaseIdx)
+            sumPrecipitates += priVars[numComponents + solidPhaseIdx];
+
+        return (1 - sumPrecipitates);
+    }
+
+private:
+    const SpatialParams& spatialParams_() const
+    { return *spatialParamsPtr_; }
+
+    const SpatialParams* spatialParamsPtr_;
+};
+
+} // namespace Dumux
+
+#endif