test/porousmediumflow/2p2c/implicit/waterair/problem.hh

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#ifndef DUMUX_WATER_AIR_PROBLEM_HH
#define DUMUX_WATER_AIR_PROBLEM_HH
 
#include <dune/grid/yaspgrid.hh>
 
#include <dumux/discretization/cctpfa.hh>
#include <dumux/discretization/box.hh>
#include <dumux/discretization/method.hh>
 
#include <dumux/material/components/n2.hh>
#include <dumux/material/fluidsystems/h2on2.hh>
#include <dumux/porousmediumflow/2p2c/model.hh>
#include <dumux/porousmediumflow/problem.hh>
 
#include "spatialparams.hh"
 
namespace Dumux {
 
template <class TypeTag>
class WaterAirProblem;
 
namespace Properties {
// Create new type tags
namespace TTag {
struct WaterAir { using InheritsFrom = std::tuple<TwoPTwoCNI>; };
struct WaterAirBox { using InheritsFrom = std::tuple<WaterAir, BoxModel>; };
struct WaterAirCCTpfa { using InheritsFrom = std::tuple<WaterAir, CCTpfaModel>; };
} // end namespace TTag
 
// Set the grid type
template<class TypeTag>
struct Grid<TypeTag, TTag::WaterAir> { using type = Dune::YaspGrid<2>; };
 
// Set the problem property
template<class TypeTag>
struct Problem<TypeTag, TTag::WaterAir> { using type = WaterAirProblem<TypeTag>; };
 
// Set the wetting phase
template<class TypeTag>
struct FluidSystem<TypeTag, TTag::WaterAir> { using type = FluidSystems::H2ON2<GetPropType<TypeTag, Properties::Scalar>>; };
 
// Set the spatial parameters
template<class TypeTag>
struct SpatialParams<TypeTag, TTag::WaterAir>
{
    using GridGeometry = GetPropType<TypeTag, Properties::GridGeometry>;
    using Scalar = GetPropType<TypeTag, Properties::Scalar>;
    using type = WaterAirSpatialParams<GridGeometry, Scalar>;
};
 
// Define whether mole(true) or mass (false) fractions are used
template<class TypeTag>
struct UseMoles<TypeTag, TTag::WaterAir> { static constexpr bool value = true; };
} // end namespace Dumux

template <class TypeTag >
class WaterAirProblem : public PorousMediumFlowProblem<TypeTag>
{
    using ParentType = PorousMediumFlowProblem<TypeTag>;
 
    using Scalar = GetPropType<TypeTag, Properties::Scalar>;
    using GridView = GetPropType<TypeTag, Properties::GridView>;
    using FluidSystem = GetPropType<TypeTag, Properties::FluidSystem>;
    using ModelTraits = GetPropType<TypeTag, Properties::ModelTraits>;
    using Indices = typename ModelTraits::Indices;
 
    // primary variable indices
    enum
    {
        pressureIdx = Indices::pressureIdx,
        switchIdx = Indices::switchIdx,
        temperatureIdx = Indices::temperatureIdx,
        energyEqIdx = Indices::energyEqIdx
    };
 
    // equation indices
    enum
    {
        contiH2OEqIdx = Indices::conti0EqIdx + FluidSystem::H2OIdx,
        contiN2EqIdx = Indices::conti0EqIdx + FluidSystem::N2Idx
    };
 
    // phase presence
    enum { wPhaseOnly = Indices::firstPhaseOnly };
    // component index
    enum { N2Idx = FluidSystem::N2Idx };
 
    using PrimaryVariables = GetPropType<TypeTag, Properties::PrimaryVariables>;
    using NumEqVector = GetPropType<TypeTag, Properties::NumEqVector>;
    using BoundaryTypes = GetPropType<TypeTag, Properties::BoundaryTypes>;
    using Element = typename GridView::template Codim<0>::Entity;
    using GlobalPosition = typename Element::Geometry::GlobalCoordinate;
    using FVElementGeometry = typename GetPropType<TypeTag, Properties::GridGeometry>::LocalView;
    using GridGeometry = GetPropType<TypeTag, Properties::GridGeometry>;
    using SubControlVolumeFace = typename FVElementGeometry::SubControlVolumeFace;
    using ElementVolumeVariables = typename GetPropType<TypeTag, Properties::GridVolumeVariables>::LocalView;

    static constexpr bool useMoles = ModelTraits::useMoles();
 
public:
    WaterAirProblem(std::shared_ptr<const GridGeometry> gridGeometry)
    : ParentType(gridGeometry)
    {
        maxDepth_ = 1000.0; // [m]
 
        FluidSystem::init();
 
        name_ = getParam<std::string>("Problem.Name");
        useDirichlet_ = name_.find("buoyancy") != std::string::npos;
 
        //stating in the console whether mole or mass fractions are used
        if(useMoles)
            std::cout << "The problem uses mole-fractions" << std::endl;
        else
            std::cout << "The problem uses mass-fractions" << std::endl;
 
        this->spatialParams().plotMaterialLaw();
    }

    // \{

    const std::string& name() const
    { return name_; }
 
    // \}

    // \{

    BoundaryTypes boundaryTypesAtPos(const GlobalPosition &globalPos) const
    {
        BoundaryTypes bcTypes;
        if(globalPos[0] > 40 - eps_ || globalPos[0] < eps_)
            bcTypes.setAllDirichlet();
        else
            bcTypes.setAllNeumann();
 
        if (useDirichlet_)
        {
            if (isInjectionArea_(globalPos))
                bcTypes.setAllDirichlet();
        }
 
        return bcTypes;
    }

    PrimaryVariables dirichletAtPos(const GlobalPosition &globalPos) const
    {
        PrimaryVariables priVars = initial_(globalPos);
 
        if (useDirichlet_)
        {
            if (isInjectionArea_(globalPos))
            {
                priVars.setState(Indices::bothPhases);
                priVars[switchIdx] = 0.2;
                return priVars;
            }
        }
 
        return priVars;
    }

    NumEqVector neumannAtPos(const GlobalPosition &globalPos) const
    {
        NumEqVector values(0.0);
 
        // we inject pure gasious nitrogen at the initial condition temperature and pressure  from the bottom (negative values mean injection)
        if (isInjectionArea_(globalPos))
        {
            values[contiN2EqIdx] = useMoles ? -1e-3/FluidSystem::molarMass(N2Idx) : -1e-3; // kg/(m^2*s) or mole/(m^2*s)
 
            const auto initialValues = initial_(globalPos);
            const auto& mParams = this->spatialParams().materialLawParamsAtPos(globalPos);
            using MaterialLaw = typename ParentType::SpatialParams::MaterialLaw;
            const auto pn = initialValues[pressureIdx] + MaterialLaw::endPointPc(mParams);
            const auto t = initialValues[temperatureIdx];
 
            // note: energy equation is always formulated in terms of mass specific quantities, not per mole
            values[energyEqIdx] = -1e-3*Components::N2<Scalar>::gasEnthalpy(t, pn);
        }
 
        return values;
    }
 
    // \}

    // \{

    PrimaryVariables initialAtPos(const GlobalPosition &globalPos) const
    {
        auto priVars = initial_(globalPos);
        // initially there is a heated lens in the domain
        if (globalPos[0] > 20 - eps_ && globalPos[0] < 30 + eps_ && globalPos[1] < 30 + eps_)
            priVars[temperatureIdx] = 380.0;
 
        return priVars;
    }
 
private:
    // internal method for the initial condition (reused for the
    // dirichlet conditions!)
    PrimaryVariables initial_(const GlobalPosition &globalPos) const
    {
        PrimaryVariables priVars(0.0);
        priVars.setState(wPhaseOnly);
        Scalar densityW = 1000.0;
        priVars[pressureIdx] = 1e5 + (maxDepth_ - globalPos[1])*densityW*9.81;
        priVars[switchIdx] = 0.0;
        priVars[temperatureIdx] = initialTemperatureProfile_(globalPos);
        return priVars;
    }
 
    Scalar initialTemperatureProfile_(const GlobalPosition &globalPos) const
    { return 283.0 + (maxDepth_ - globalPos[1])*0.03; }
 
    bool isInjectionArea_(const GlobalPosition& globalPos) const
    {
        return globalPos[0] > 14.8 - eps_ && globalPos[0] < 25.2 + eps_ && globalPos[1] < eps_;
    }
 
    Scalar maxDepth_;
    static constexpr Scalar eps_ = 1e-2;
    std::string name_;
    bool useDirichlet_;
};
 
} // end namespace Dumux
 
#endif