perfect_gas/MusclHancockPrimMethod.hpp

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// Copyright (c) 2020 Maikel Nadolski
//
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// furnished to do so, subject to the following conditions:
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#ifndef FUB_EQUATIONS_PERFECT_GAS_MUSCL_PRIM_HPP
#define FUB_EQUATIONS_PERFECT_GAS_MUSCL_PRIM_HPP
 
#include "fub/equations/PerfectGas.hpp"
#include "fub/flux_method/FluxMethod.hpp"
 
namespace fub::perfect_gas {
 
/// \ingroup FluxMethod
template <int Dim> struct MusclHancockPrim {
  using Conservative = ::fub::Conservative<PerfectGas<Dim>>;
  using Complete = ::fub::Complete<PerfectGas<Dim>>;
  using ConservativeArray = ::fub::ConservativeArray<PerfectGas<Dim>>;
  using CompleteArray = ::fub::CompleteArray<PerfectGas<Dim>>;
 
  MusclHancockPrim(const PerfectGas<Dim>& equation) : equation_{equation} {}
 
  const PerfectGas<Dim>& GetEquation() const noexcept { return equation_; }
 
  static constexpr int GetStencilWidth() noexcept { return 2; }
 
  void ComputeNumericFlux(Conservative& flux, span<const Complete, 4> stencil,
                          Duration dt, double dx, Direction dir);
 
  void ComputeNumericFlux(ConservativeArray& flux, Array1d face_fractions,
                          span<const CompleteArray, 4> stencil,
                          span<const Array1d, 4> volume_fractions, Duration dt,
                          double dx, Direction dir);
 
  void ComputeNumericFlux(ConservativeArray& flux,
                          span<const CompleteArray, 4> stencil, Duration dt,
                          double dx, Direction dir);
 
  double ComputeStableDt(span<const Complete, 4> states, double dx,
                         Direction dir);
 
  Array1d ComputeStableDt(span<const CompleteArray, 4> states, double dx,
                          Direction dir);
 
  Array1d ComputeStableDt(span<const CompleteArray, 4> states,
                          Array1d face_fraction, span<const Array1d, 4>,
                          double dx, Direction dir);
 
  PerfectGas<Dim> equation_;
};
 
extern template struct MusclHancockPrim<1>;
extern template struct MusclHancockPrim<2>;
extern template struct MusclHancockPrim<3>;
 
} // namespace fub::perfect_gas
 
namespace fub {
 
extern template class FluxMethod<perfect_gas::MusclHancockPrim<1>>;
extern template class FluxMethod<perfect_gas::MusclHancockPrim<2>>;
extern template class FluxMethod<perfect_gas::MusclHancockPrim<3>>;
 
}
 
#endif