Line data    Source code

       1            0 : // Distributed under the MIT License.
       2              : // See LICENSE.txt for details.
       3              : 
       4              : #pragma once
       5              : 
       6              : #include <cstddef>
       7              : 
       8              : #include "DataStructures/VariablesTag.hpp"
       9              : #include "Evolution/Systems/ScalarAdvection/BoundaryConditions/BoundaryCondition.hpp"
      10              : #include "Evolution/Systems/ScalarAdvection/Characteristics.hpp"
      11              : #include "Evolution/Systems/ScalarAdvection/Tags.hpp"
      12              : #include "Evolution/Systems/ScalarAdvection/TimeDerivativeTerms.hpp"
      13              : #include "Utilities/TMPL.hpp"
      14              : 
      15              : /*!
      16              :  * \ingroup EvolutionSystemsGroup
      17              :  * \brief Items related to evolving the scalar advection equation.
      18              :  *
      19              :  * \f{align*}
      20              :  * \partial_t U + \nabla \cdot (v U) = 0
      21              :  * \f}
      22              :  *
      23              :  * Since the ScalarAdvection system is only used for testing limiters in the
      24              :  * current implementation, the velocity field \f$v\f$ is fixed throughout time.
      25              :  */
      26              : namespace ScalarAdvection {
      27              : template <size_t Dim>
      28            0 : struct System {
      29            0 :   static std::string name() { return "ScalarAdvection"; }
      30              : 
      31            0 :   static constexpr bool is_in_flux_conservative_form = true;
      32            0 :   static constexpr bool has_primitive_and_conservative_vars = false;
      33            0 :   static constexpr size_t volume_dim = Dim;
      34              : 
      35            0 :   using boundary_conditions_base = BoundaryConditions::BoundaryCondition<Dim>;
      36              : 
      37            0 :   using variables_tag = ::Tags::Variables<tmpl::list<Tags::U>>;
      38            0 :   using flux_variables = tmpl::list<Tags::U>;
      39            0 :   using gradient_variables = tmpl::list<>;
      40              : 
      41            0 :   using compute_volume_time_derivative_terms = TimeDerivativeTerms<Dim>;
      42              : 
      43            0 :   using compute_largest_characteristic_speed =
      44              :       Tags::LargestCharacteristicSpeedCompute<Dim>;
      45              : };
      46              : }  // namespace ScalarAdvection