test/freeflow/navierstokes/channel/2d/problem.hh

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#ifndef DUMUX_CHANNEL_TEST_PROBLEM_HH
#define DUMUX_CHANNEL_TEST_PROBLEM_HH
 
#include <dune/grid/yaspgrid.hh>
 
#include <dumux/material/fluidsystems/1pliquid.hh>
#include <dumux/material/components/simpleh2o.hh>
#include <dumux/material/components/constant.hh>
 
#include <dumux/freeflow/navierstokes/problem.hh>
#include <dumux/discretization/staggered/freeflow/properties.hh>
#include <dumux/freeflow/navierstokes/model.hh>
 
namespace Dumux {
template <class TypeTag>
class ChannelTestProblem;
 
namespace Properties {
// Create new type tags
namespace TTag {
#if !NONISOTHERMAL
struct ChannelTest { using InheritsFrom = std::tuple<NavierStokes, StaggeredFreeFlowModel>; };
#else
struct ChannelTest { using InheritsFrom = std::tuple<NavierStokesNI, StaggeredFreeFlowModel>; };
#endif
} // end namespace TTag
 
// the fluid system
template<class TypeTag>
struct FluidSystem<TypeTag, TTag::ChannelTest>
{
    using Scalar = GetPropType<TypeTag, Properties::Scalar>;
#if NONISOTHERMAL
    using type = FluidSystems::OnePLiquid<Scalar, Components::SimpleH2O<Scalar> >;
#else
    using type = FluidSystems::OnePLiquid<Scalar, Components::Constant<1, Scalar> >;
#endif
};
 
// Set the grid type
template<class TypeTag>
struct Grid<TypeTag, TTag::ChannelTest> { using type = Dune::YaspGrid<2>; };
 
// Set the problem property
template<class TypeTag>
struct Problem<TypeTag, TTag::ChannelTest> { using type = Dumux::ChannelTestProblem<TypeTag> ; };
 
template<class TypeTag>
struct EnableGridGeometryCache<TypeTag, TTag::ChannelTest> { static constexpr bool value = true; };
 
template<class TypeTag>
struct EnableGridFluxVariablesCache<TypeTag, TTag::ChannelTest> { static constexpr bool value = true; };
template<class TypeTag>
struct EnableGridVolumeVariablesCache<TypeTag, TTag::ChannelTest> { static constexpr bool value = true; };
} // end namespace Properties
 
template <class TypeTag>
class ChannelTestProblem : public NavierStokesProblem<TypeTag>
{
    using ParentType = NavierStokesProblem<TypeTag>;
 
    using BoundaryTypes = GetPropType<TypeTag, Properties::BoundaryTypes>;
    using GridGeometry = GetPropType<TypeTag, Properties::GridGeometry>;
    using FVElementGeometry = typename GridGeometry::LocalView;
    using SubControlVolumeFace = typename GridGeometry::SubControlVolumeFace;
    using Indices = typename GetPropType<TypeTag, Properties::ModelTraits>::Indices;
    using NumEqVector = GetPropType<TypeTag, Properties::NumEqVector>;
    using PrimaryVariables = GetPropType<TypeTag, Properties::PrimaryVariables>;
    using Scalar = GetPropType<TypeTag, Properties::Scalar>;
 
    using Element = typename GridGeometry::GridView::template Codim<0>::Entity;
    using GlobalPosition = typename Element::Geometry::GlobalCoordinate;
 
    using TimeLoopPtr = std::shared_ptr<CheckPointTimeLoop<Scalar>>;
 
    // the types of outlet boundary conditions
    enum class OutletCondition
    {
        outflow, doNothing, neumannXdirichletY, neumannXneumannY
    };
 
public:
    ChannelTestProblem(std::shared_ptr<const GridGeometry> gridGeometry)
    : ParentType(gridGeometry), eps_(1e-6)
    {
        inletVelocity_ = getParam<Scalar>("Problem.InletVelocity");
        const auto tmp = getParam<std::string>("Problem.OutletCondition", "Outflow");
        if (tmp == "Outflow")
            outletCondition_ = OutletCondition::outflow;
        else if (tmp == "DoNothing")
            outletCondition_ = OutletCondition::doNothing;
        else if (tmp == "NeumannX_DirichletY")
            outletCondition_ = OutletCondition::neumannXdirichletY;
        else if (tmp == "NeumannX_NeumannY")
            outletCondition_ = OutletCondition::neumannXneumannY;
        else
            DUNE_THROW(Dune::InvalidStateException, tmp + " is not a valid outlet boundary condition");
 
        useVelocityProfile_ = getParam<bool>("Problem.UseVelocityProfile", false);
        outletPressure_ = getParam<Scalar>("Problem.OutletPressure", 1.1e5);
    }
 
    // \{
 
    Scalar temperature() const
    { return 273.15 + 10; } // 10C
 
    NumEqVector sourceAtPos(const GlobalPosition &globalPos) const
    {
        return NumEqVector(0.0);
    }
    // \}
    // \{
 
    BoundaryTypes boundaryTypesAtPos(const GlobalPosition &globalPos) const
    {
        BoundaryTypes values;
 
        if(isInlet_(globalPos))
        {
            values.setDirichlet(Indices::velocityXIdx);
            values.setDirichlet(Indices::velocityYIdx);
#if NONISOTHERMAL
            values.setDirichlet(Indices::temperatureIdx);
#endif
        }
        else if(isOutlet_(globalPos))
        {
            if (outletCondition_ == OutletCondition::outflow)
                values.setDirichlet(Indices::pressureIdx);
            else if (outletCondition_ == OutletCondition::doNothing ||
                     outletCondition_ == OutletCondition::neumannXneumannY)
            {
                values.setNeumann(Indices::momentumXBalanceIdx);
                values.setNeumann(Indices::momentumYBalanceIdx);
            }
            else // (outletCondition_ == OutletCondition::neumannXdirichletY)
            {
                values.setDirichlet(Indices::velocityYIdx);
                values.setNeumann(Indices::momentumXBalanceIdx);
            }
#if NONISOTHERMAL
            values.setOutflow(Indices::energyEqIdx);
#endif
        }
        else
        {
            values.setDirichlet(Indices::velocityXIdx);
            values.setDirichlet(Indices::velocityYIdx);
#if NONISOTHERMAL
            values.setNeumann(Indices::energyEqIdx);
#endif
        }
 
        return values;
    }
 
    PrimaryVariables dirichletAtPos(const GlobalPosition &globalPos) const
    {
        PrimaryVariables values = initialAtPos(globalPos);
 
        if(isInlet_(globalPos))
        {
#if NONISOTHERMAL
            // give the system some time so that the pressure can equilibrate, then start the injection of the hot liquid
            if(time() >= 200.0)
                values[Indices::temperatureIdx] = 293.15;
#endif
        }
        else
            values[Indices::velocityXIdx] = 0.0;
 
        return values;
    }
 
    template<class ElementVolumeVariables, class ElementFaceVariables>
    NumEqVector neumann(const Element& element,
                        const FVElementGeometry& fvGeometry,
                        const ElementVolumeVariables& elemVolVars,
                        const ElementFaceVariables& elemFaceVars,
                        const SubControlVolumeFace& scvf) const
    {
        NumEqVector values(0.0);
 
        values[scvf.directionIndex()] = initialAtPos(scvf.center())[Indices::pressureIdx];
 
        // make sure to normalize the pressure if the property is set true
        if (getPropValue<TypeTag, Properties::NormalizePressure>())
            values[scvf.directionIndex()] -= initialAtPos(scvf.center())[Indices::pressureIdx];
 
        if (outletCondition_ != OutletCondition::doNothing)
            values[1] = -dudy(scvf.center()[1], inletVelocity_) * elemVolVars[scvf.insideScvIdx()].viscosity();
 
        return values;
    }
 
    Scalar parabolicProfile(const Scalar y, const Scalar vMax) const
    {
        const Scalar yMin = this->gridGeometry().bBoxMin()[1];
        const Scalar yMax = this->gridGeometry().bBoxMax()[1];
        return  vMax * (y - yMin)*(yMax - y) / (0.25*(yMax - yMin)*(yMax - yMin));
    }
 
    Scalar dudy(const Scalar y, const Scalar vMax) const
    {
        const Scalar yMin = this->gridGeometry().bBoxMin()[1];
        const Scalar yMax = this->gridGeometry().bBoxMax()[1];
        return vMax * (4.0*yMin + 4*yMax - 8.0*y) / ((yMin-yMax)*(yMin-yMax));
    }
 
    // \}
 
    // \{
 
    PrimaryVariables initialAtPos(const GlobalPosition &globalPos) const
    {
        PrimaryVariables values;
        values[Indices::pressureIdx] = outletPressure_;
        values[Indices::velocityYIdx] = 0.0;
 
#if NONISOTHERMAL
        values[Indices::temperatureIdx] = 283.15;
#endif
 
        if (useVelocityProfile_)
            values[Indices::velocityXIdx] = parabolicProfile(globalPos[1], inletVelocity_);
        else
            values[Indices::velocityXIdx] = inletVelocity_;
 
        return values;
    }
 
    // \}
    void setTimeLoop(TimeLoopPtr timeLoop)
    {
        timeLoop_ = timeLoop;
        if(inletVelocity_ > eps_)
            timeLoop_->setCheckPoint({200.0, 210.0});
    }
 
    Scalar time() const
    {
        return timeLoop_->time();
    }
 
private:
 
    bool isInlet_(const GlobalPosition& globalPos) const
    {
        return globalPos[0] < eps_;
    }
 
    bool isOutlet_(const GlobalPosition& globalPos) const
    {
        return globalPos[0] > this->gridGeometry().bBoxMax()[0] - eps_;
    }
 
    Scalar eps_;
    Scalar inletVelocity_;
    Scalar outletPressure_;
    OutletCondition outletCondition_;
    bool useVelocityProfile_;
    TimeLoopPtr timeLoop_;
};
} // end namespace Dumux
 
#endif