cellcentered/gridvolumevariables.hh

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#ifndef DUMUX_DISCRETIZATION_CC_GRID_VOLUMEVARIABLES_HH
#define DUMUX_DISCRETIZATION_CC_GRID_VOLUMEVARIABLES_HH
 
#include <vector>
#include <type_traits>
 
#include <dumux/parallel/parallel_for.hh>
 
// make the local view function available whenever we use this class
#include <dumux/discretization/localview.hh>
#include <dumux/discretization/cellcentered/elementsolution.hh>
 
namespace Dumux {

template<class Traits, bool cachingEnabled = false>
class CCGridVolumeVariables {};

template<class Traits>
class CCGridVolumeVariables<Traits, /*cachingEnabled*/true>
{
    using ThisType = CCGridVolumeVariables<Traits, true>;
 
public:
    using Problem = typename Traits::Problem;

    using VolumeVariables = typename Traits::VolumeVariables;

    static constexpr bool cachingEnabled = true;

    using LocalView = typename Traits::template LocalView<ThisType, cachingEnabled>;
 
    CCGridVolumeVariables(const Problem& problem) : problemPtr_(&problem) {}
 
    template<class GridGeometry, class SolutionVector>
    void update(const GridGeometry& gridGeometry, const SolutionVector& sol)
    {
        volumeVariables_.resize(gridGeometry.numScv());
        Dumux::parallelFor(gridGeometry.gridView().size(0), [&, &problem = problem()](const std::size_t eIdx)
        {
            const auto element = gridGeometry.element(eIdx);
            const auto fvGeometry = localView(gridGeometry).bindElement(element);
            for (const auto& scv : scvs(fvGeometry))
            {
                const auto elemSol = elementSolution(element, sol, gridGeometry);
                volumeVariables_[scv.dofIndex()].update(elemSol, problem, element, scv);
            }
        });
    }
 
    const VolumeVariables& volVars(const std::size_t scvIdx) const
    { return volumeVariables_[scvIdx]; }
 
    VolumeVariables& volVars(const std::size_t scvIdx)
    { return volumeVariables_[scvIdx]; }
 
    template<class SubControlVolume, typename std::enable_if_t<!std::is_integral<SubControlVolume>::value, int> = 0>
    const VolumeVariables& volVars(const SubControlVolume& scv) const
    { return volumeVariables_[scv.dofIndex()]; }
 
    template<class SubControlVolume, typename std::enable_if_t<!std::is_integral<SubControlVolume>::value, int> = 0>
    VolumeVariables& volVars(const SubControlVolume& scv)
    { return volumeVariables_[scv.dofIndex()]; }
 
    // required for compatibility with the box method
    const VolumeVariables& volVars(const std::size_t scvIdx, const std::size_t localIdx) const
    { return volumeVariables_[scvIdx]; }
 
    // required for compatibility with the box method
    VolumeVariables& volVars(const std::size_t scvIdx, const std::size_t localIdx)
    { return volumeVariables_[scvIdx]; }

    const Problem& problem() const
    { return *problemPtr_; }
 
private:
    const Problem* problemPtr_;
    std::vector<VolumeVariables> volumeVariables_;
};
 

template<class Traits>
class CCGridVolumeVariables<Traits, /*cachingEnabled*/false>
{
    using ThisType = CCGridVolumeVariables<Traits, false>;
 
public:
    using Problem = typename Traits::Problem;

    using VolumeVariables = typename Traits::VolumeVariables;

    static constexpr bool cachingEnabled = false;

    using LocalView = typename Traits::template LocalView<ThisType, cachingEnabled>;
 
    CCGridVolumeVariables(const Problem& problem) : problemPtr_(&problem) {}
 
    template<class GridGeometry, class SolutionVector>
    void update(const GridGeometry& gridGeometry, const SolutionVector& sol) {}

    const Problem& problem() const
    { return *problemPtr_;}
 
private:
    const Problem* problemPtr_;
};
 
} // end namespace Dumux
 
#endif