freeflow/rans/twoeq/komega/staggered/localresidual.hh

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#ifndef DUMUX_STAGGERED_KOMEGA_LOCAL_RESIDUAL_HH
#define DUMUX_STAGGERED_KOMEGA_LOCAL_RESIDUAL_HH
 
#include <dune/common/hybridutilities.hh>
#include <dumux/common/properties.hh>
#include <dumux/discretization/method.hh>
#include <dumux/freeflow/navierstokes/localresidual.hh>
 
namespace Dumux {
 
// forward declaration
template<class TypeTag, class BaseLocalResidual, class DiscretizationMethod>
class KOmegaResidualImpl;
 
template<class TypeTag, class BaseLocalResidual>
class KOmegaResidualImpl<TypeTag, BaseLocalResidual, DiscretizationMethods::Staggered>
: public BaseLocalResidual
{
    using ParentType = BaseLocalResidual;
 
    using GridVariables = GetPropType<TypeTag, Properties::GridVariables>;
 
    using GridVolumeVariables = typename GridVariables::GridVolumeVariables;
    using ElementVolumeVariables = typename GridVolumeVariables::LocalView;
    using VolumeVariables = typename GridVolumeVariables::VolumeVariables;
 
    using GridFluxVariablesCache = typename GridVariables::GridFluxVariablesCache;
    using ElementFluxVariablesCache = typename GridFluxVariablesCache::LocalView;
    using FluxVariables = GetPropType<TypeTag, Properties::FluxVariables>;
 
    using GridFaceVariables = typename GridVariables::GridFaceVariables;
    using ElementFaceVariables = typename GridFaceVariables::LocalView;
 
    using Scalar = GetPropType<TypeTag, Properties::Scalar>;
    using Problem = GetPropType<TypeTag, Properties::Problem>;
    using GridView = typename GetPropType<TypeTag, Properties::GridGeometry>::GridView;
    using Element = typename GridView::template Codim<0>::Entity;
    using FVElementGeometry = typename GetPropType<TypeTag, Properties::GridGeometry>::LocalView;
    using SubControlVolume = typename FVElementGeometry::SubControlVolume;
    using CellCenterPrimaryVariables = GetPropType<TypeTag, Properties::CellCenterPrimaryVariables>;
    using CellCenterResidual = CellCenterPrimaryVariables;
    using Indices = typename GetPropType<TypeTag, Properties::ModelTraits>::Indices;
    using ModelTraits = GetPropType<TypeTag, Properties::ModelTraits>;
 
    static constexpr int turbulentKineticEnergyEqIdx = Indices::turbulentKineticEnergyEqIdx - ModelTraits::dim();
    static constexpr int dissipationEqIdx = Indices::dissipationEqIdx - ModelTraits::dim();
 
public:
    using ParentType::ParentType;
 
    CellCenterPrimaryVariables computeStorageForCellCenter(const Problem& problem,
                                                           const SubControlVolume& scv,
                                                           const VolumeVariables& volVars) const
    {
        CellCenterPrimaryVariables storage = ParentType::computeStorageForCellCenter(problem, scv, volVars);
 
        storage[turbulentKineticEnergyEqIdx] = volVars.turbulentKineticEnergy()*volVars.density();
        storage[dissipationEqIdx] = volVars.dissipation()*volVars.density();
 
        return storage;
    }
 
    CellCenterPrimaryVariables computeSourceForCellCenter(const Problem& problem,
                                                          const Element &element,
                                                          const FVElementGeometry& fvGeometry,
                                                          const ElementVolumeVariables& elemVolVars,
                                                          const ElementFaceVariables& elemFaceVars,
                                                          const SubControlVolume &scv) const
    {
        CellCenterPrimaryVariables source = ParentType::computeSourceForCellCenter(problem, element, fvGeometry,
                                                                                   elemVolVars, elemFaceVars, scv);
 
        using std::min;
        const auto& volVars = elemVolVars[scv];
 
        // production
        static const auto enableKOmegaProductionLimiter
            = getParamFromGroup<bool>(problem.paramGroup(), "KOmega.EnableProductionLimiter", false);
        Scalar productionTerm = 2.0 * volVars.dynamicEddyViscosity() * volVars.stressTensorScalarProduct();
        if (enableKOmegaProductionLimiter)
        {
            Scalar productionAlternative = 20.0 * volVars.density() * volVars.betaK() * volVars.turbulentKineticEnergy() * volVars.dissipation();
            productionTerm = min(productionTerm, productionAlternative);
        }
        source[turbulentKineticEnergyEqIdx] += productionTerm;
        source[dissipationEqIdx] += volVars.alpha() * volVars.dissipation() / volVars.turbulentKineticEnergy() * productionTerm;
 
        // destruction
        source[turbulentKineticEnergyEqIdx] -= volVars.betaK() * volVars.density() * volVars.turbulentKineticEnergy() * volVars.dissipation();
        source[dissipationEqIdx] -= volVars.betaOmega() * volVars.density() * volVars.dissipation() * volVars.dissipation();
 
        // cross-diffusion term
        Scalar gradientProduct = 0.0;
        for (unsigned int i = 0; i < ModelTraits::dim(); ++i)
            gradientProduct += volVars.storedTurbulentKineticEnergyGradient()[i]
                               * volVars.storedDissipationGradient()[i];
        if (gradientProduct > 0.0)
            source[dissipationEqIdx] += 0.125 *volVars.density() / volVars.dissipation() * gradientProduct;
 
        return source;
    }
};
} // end namespace Dumux
 
#endif