riemann_solver.h

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//
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// Copyright (C) 2023 - 2024 by the ryujin authors
//
 
#pragma once
 
#include <compile_time_options.h>
 
#include "hyperbolic_system.h"
 
#include <simd.h>
 
#include <deal.II/base/point.h>
#include <deal.II/base/tensor.h>
 
namespace ryujin
{
  namespace Skeleton
  {
    template <typename ScalarNumber = double>
    class RiemannSolverParameters : public dealii::ParameterAcceptor
    {
    public:
      RiemannSolverParameters(const std::string &subsection = "/RiemannSolver")
          : ParameterAcceptor(subsection)
      {
      }
    };
 
 
    template <int dim, typename Number = double>
    class RiemannSolver
    {
    public:
 
      using View = HyperbolicSystemView<dim, Number>;
 
      using ScalarNumber = typename View::ScalarNumber;
 
      using state_type = typename View::state_type;
 
      using PrecomputedVector = typename View::PrecomputedVector;
 
      using Parameters = RiemannSolverParameters<ScalarNumber>;
 
 
 
      RiemannSolver(const HyperbolicSystem &hyperbolic_system,
                    const Parameters &parameters,
                    const PrecomputedVector &precomputed_values)
          : hyperbolic_system(hyperbolic_system)
          , parameters(parameters)
          , precomputed_values(precomputed_values)
      {
      }
 
      Number compute(const state_type & /*U_i*/,
                     const state_type & /*U_j*/,
                     const unsigned int /*i*/,
                     const unsigned int * /*js*/,
                     const dealii::Tensor<1, dim, Number> & /*n_ij*/) const
      {
        return Number(1.);
      }
 
    private:
      const HyperbolicSystem &hyperbolic_system;
      const Parameters &parameters;
      const PrecomputedVector &precomputed_values;
    };
  } // namespace Skeleton
} // namespace ryujin