common/pdesolver.hh

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#ifndef DUMUX_COMMON_PDESOLVER_HH
#define DUMUX_COMMON_PDESOLVER_HH
 
#include <memory>
#include <utility>
 
#include <dune/common/hybridutilities.hh>
 
#include <dumux/common/timeloop.hh>
 
// forward declare
namespace Dune {
template <class FirstRow, class ... Args>
class MultiTypeBlockMatrix;
}
 
namespace Dumux {
 
template<class Assembler, class LinearSolver>
class PDESolver
{
    using SolutionVector = typename Assembler::ResidualType;
    using Scalar = typename Assembler::Scalar;
    using TimeLoop = TimeLoopBase<Scalar>;
 
public:
    PDESolver(std::shared_ptr<Assembler> assembler,
              std::shared_ptr<LinearSolver> linearSolver)
    : assembler_(assembler)
    , linearSolver_(linearSolver)
    {}
 
    virtual ~PDESolver() = default;
 
    virtual void solve(SolutionVector& sol) = 0;
 
    virtual void solve(SolutionVector& sol, TimeLoop& timeLoop)
    {
        // per default we just forward to the method without time step control
        solve(sol);
    }
 
protected:
    const Assembler& assembler() const
    { return *assembler_; }
 
    Assembler& assembler()
    { return *assembler_; }
 
    const LinearSolver& linearSolver() const
    { return *linearSolver_; }
 
    LinearSolver& linearSolver()
    { return *linearSolver_; }
 
    template <class FirstRow, class ... Args>
    bool checkSizesOfSubMatrices(const Dune::MultiTypeBlockMatrix<FirstRow, Args...>& matrix) const
    {
        bool matrixHasCorrectSize = true;
        using namespace Dune::Hybrid;
        forEach(std::make_index_sequence<Dune::MultiTypeBlockMatrix<FirstRow, Args...>::N()>(), [&](const auto i)
        {
            const auto& row = matrix[i];
            const auto numRowsLeftMostBlock = row[Dune::index_constant<0>{}].N();
            forEach(row, [&](const auto& subBlock)
            {
                if (subBlock.N() != numRowsLeftMostBlock)
                    matrixHasCorrectSize = false;
            });
        });
        return matrixHasCorrectSize;
    }
 
private:
    std::shared_ptr<Assembler> assembler_;
    std::shared_ptr<LinearSolver> linearSolver_;
};
 
} // namespace Dumux
 
#endif