Line data    Source code

       1           0 : // Distributed under the MIT License.
       2             : // See LICENSE.txt for details.
       3             : 
       4             : #pragma once
       5             : 
       6             : #include <limits>
       7             : #include <memory>
       8             : #include <optional>
       9             : #include <string>
      10             : 
      11             : #include "DataStructures/DataBox/Prefixes.hpp"
      12             : #include "DataStructures/Tensor/TypeAliases.hpp"
      13             : #include "Domain/BoundaryConditions/BoundaryCondition.hpp"
      14             : #include "Evolution/BoundaryConditions/Type.hpp"
      15             : #include "Evolution/Systems/Burgers/BoundaryConditions/BoundaryCondition.hpp"
      16             : #include "Evolution/Systems/Burgers/Tags.hpp"
      17             : #include "Options/String.hpp"
      18             : #include "Utilities/Gsl.hpp"
      19             : #include "Utilities/Serialization/CharmPupable.hpp"
      20             : #include "Utilities/TMPL.hpp"
      21             : 
      22             : /// \cond
      23             : class DataVector;
      24             : template <size_t Dim>
      25             : class Direction;
      26             : namespace PUP {
      27             : class er;
      28             : }  // namespace PUP
      29             : template <typename>
      30             : class Variables;
      31             : /// \endcond
      32             : 
      33             : namespace Burgers::BoundaryConditions {
      34             : /*
      35             :  * \brief Dirichlet boundary condition setting the value of U to a
      36             :  * time-independent constant.
      37             :  */
      38           0 : class Dirichlet final : public BoundaryCondition {
      39             :  private:
      40           0 :   using flux_tag =
      41             :       ::Tags::Flux<Burgers::Tags::U, tmpl::size_t<1>, Frame::Inertial>;
      42             : 
      43             :  public:
      44           0 :   struct U {
      45           0 :     using type = double;
      46           0 :     static constexpr Options::String help{"The value for U on the boundary"};
      47             :   };
      48             : 
      49           0 :   using options = tmpl::list<U>;
      50           0 :   static constexpr Options::String help{
      51             :       "Dirichlet boundary condition setting the value of U to "
      52             :       "a time-independent constant."};
      53             : 
      54           0 :   Dirichlet(double u_value);
      55             : 
      56           0 :   Dirichlet() = default;
      57           0 :   Dirichlet(Dirichlet&&) = default;
      58           0 :   Dirichlet& operator=(Dirichlet&&) = default;
      59           0 :   Dirichlet(const Dirichlet&) = default;
      60           0 :   Dirichlet& operator=(const Dirichlet&) = default;
      61           0 :   ~Dirichlet() override = default;
      62             : 
      63           0 :   explicit Dirichlet(CkMigrateMessage* msg);
      64             : 
      65           0 :   WRAPPED_PUPable_decl_base_template(BoundaryCondition, Dirichlet);
      66             : 
      67           0 :   auto get_clone() const -> std::unique_ptr<
      68             :       domain::BoundaryConditions::BoundaryCondition> override;
      69             : 
      70           0 :   static constexpr evolution::BoundaryConditions::Type bc_type =
      71             :       evolution::BoundaryConditions::Type::Ghost;
      72             : 
      73           0 :   void pup(PUP::er& p) override;
      74             : 
      75           0 :   using dg_interior_evolved_variables_tags = tmpl::list<>;
      76           0 :   using dg_interior_temporary_tags = tmpl::list<>;
      77           0 :   using dg_gridless_tags = tmpl::list<>;
      78             : 
      79           0 :   std::optional<std::string> dg_ghost(
      80             :       gsl::not_null<Scalar<DataVector>*> u,
      81             :       gsl::not_null<tnsr::I<DataVector, 1, Frame::Inertial>*> flux_u,
      82             :       const std::optional<
      83             :           tnsr::I<DataVector, 1, Frame::Inertial>>& /*face_mesh_velocity*/,
      84             :       const tnsr::i<DataVector, 1, Frame::Inertial>& /*normal_covector*/) const;
      85             : 
      86           0 :   using fd_interior_evolved_variables_tags = tmpl::list<>;
      87           0 :   using fd_interior_temporary_tags = tmpl::list<>;
      88           0 :   using fd_gridless_tags = tmpl::list<>;
      89             : 
      90           0 :   void fd_ghost(gsl::not_null<Scalar<DataVector>*> u,
      91             :                 const Direction<1>& /*direction*/) const;
      92             : 
      93             :  private:
      94           0 :   void dg_ghost_impl(
      95             :       gsl::not_null<tnsr::I<DataVector, 1, Frame::Inertial>*> flux,
      96             :       gsl::not_null<Scalar<DataVector>*> u) const;
      97             : 
      98           0 :   double u_value_ = std::numeric_limits<double>::signaling_NaN();
      99             : };
     100             : }  // namespace Burgers::BoundaryConditions