freeflow/rans/twoeq/kepsilon/volumevariables.hh

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#ifndef DUMUX_KEPSILON_VOLUME_VARIABLES_HH
#define DUMUX_KEPSILON_VOLUME_VARIABLES_HH
 
#include <dumux/common/parameters.hh>
#include <dumux/freeflow/rans/volumevariables.hh>
 
namespace Dumux {
 
template <class Traits, class NSVolumeVariables>
class KEpsilonVolumeVariables
:  public RANSVolumeVariables<Traits, NSVolumeVariables>
{
    using RANSParentType = RANSVolumeVariables<Traits, NSVolumeVariables>;
 
    using Scalar = typename Traits::PrimaryVariables::value_type;
 
public:
    using Indices = typename Traits::ModelTraits::Indices;
 
    template<class ElementSolution, class Problem, class Element, class SubControlVolume>
    void update(const ElementSolution &elemSol,
                const Problem &problem,
                const Element &element,
                const SubControlVolume& scv)
    {
        RANSParentType::updateNavierStokesVolVars(elemSol, problem, element, scv);
        updateRANSProperties(elemSol, problem, element, scv);
    }
 
    template<class ElementSolution, class Problem, class Element, class SubControlVolume>
    void updateRANSProperties(const ElementSolution &elemSol,
                              const Problem &problem,
                              const Element &element,
                              const SubControlVolume& scv)
    {
        RANSParentType::updateRANSProperties(elemSol, problem, element, scv);
        isMatchingPoint_ = problem.isMatchingPoint(RANSParentType::elementIdx());
        inNearWallRegion_ = problem.inNearWallRegion(RANSParentType::elementIdx());
        turbulentKineticEnergy_ = elemSol[0][Indices::turbulentKineticEnergyIdx];
        dissipation_ = elemSol[0][Indices::dissipationIdx];
        storedDissipation_ = problem.storedDissipation(RANSParentType::elementIdx());
        storedTurbulentKineticEnergy_ = problem.storedTurbulentKineticEnergy(RANSParentType::elementIdx());
        stressTensorScalarProduct_ = problem.stressTensorScalarProduct(RANSParentType::elementIdx());
        const Scalar uStarNominal = problem.uStarNominal(RANSParentType::elementIdx());
        const auto flowDirectionAxis = problem.flowDirectionAxis(RANSParentType::elementIdx());
        yPlusNominal_ = RANSParentType::wallDistance() * uStarNominal / problem.kinematicViscosity(RANSParentType::elementIdx());
        uPlusNominal_ = RANSParentType::ccVelocityVector()[flowDirectionAxis] / uStarNominal;
        cMu_ = problem.cMu();
        if (problem.useStoredEddyViscosity())
            RANSParentType::setDynamicEddyViscosity_(problem.storedDynamicEddyViscosity(RANSParentType::elementIdx()));
        else
            RANSParentType::setDynamicEddyViscosity_(calculateEddyViscosity());
        if (inNearWallRegion_)
        {
            RANSParentType::setDynamicEddyViscosity_(problem.zeroEqDynamicEddyViscosity(RANSParentType::elementIdx()));
        }
        RANSParentType::calculateEddyDiffusivity(problem);
        RANSParentType::calculateEddyThermalConductivity(problem);
    }
 
    Scalar calculateEddyViscosity()
    {
        return cMu() * turbulentKineticEnergy() * turbulentKineticEnergy()
               / dissipation() *  RANSParentType::density();
    }
 
    Scalar turbulentKineticEnergy() const
    { return turbulentKineticEnergy_; }
 
    Scalar dissipation() const
    { return dissipation_; }
 
    Scalar storedTurbulentKineticEnergy() const
    { return storedTurbulentKineticEnergy_; }
 
    Scalar storedDissipation() const
    { return storedDissipation_; }
 
    Scalar stressTensorScalarProduct() const
    { return stressTensorScalarProduct_; }
 
    /*
     * \brief Returns if an element is located in the near-wall region
     */
    bool inNearWallRegion() const
    { return inNearWallRegion_; }
 
    bool isMatchingPoint() const
    { return isMatchingPoint_; }
 
    const Scalar cMu() const
    { return cMu_; }
 
    const Scalar sigmaK() const
    { return 1.0; }
 
    const Scalar sigmaEpsilon() const
    { return 1.3; }
 
    const Scalar cOneEpsilon() const
    { return 1.44; }
 
    const Scalar cTwoEpsilon() const
    { return 1.92; }
 
    Scalar yPlusNominal() const
    { return yPlusNominal_; }
 
    Scalar uPlusNominal() const
    { return uPlusNominal_; }
 
protected:
    Scalar turbulentKineticEnergy_ = 0.0;
    Scalar dissipation_ = 0.0;
    Scalar storedTurbulentKineticEnergy_ = 0.0;
    Scalar storedDissipation_ = 0.0;
    Scalar stressTensorScalarProduct_ = 0.0;
    Scalar yPlusNominal_ = 0.0;
    Scalar uPlusNominal_ = 0.0;
    Scalar cMu_ = 0.0;
    bool inNearWallRegion_ = false;
    bool isMatchingPoint_ = false;
};
 
} // end namespace Dumux
 
#endif