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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/BoundaryCorrections/BoundaryCorrection.hpp" 11 : #include "Evolution/Systems/ScalarAdvection/Characteristics.hpp" 12 : #include "Evolution/Systems/ScalarAdvection/Tags.hpp" 13 : #include "Evolution/Systems/ScalarAdvection/TimeDerivativeTerms.hpp" 14 : #include "Utilities/TMPL.hpp" 15 : 16 : /*! 17 : * \ingroup EvolutionSystemsGroup 18 : * \brief Items related to evolving the scalar advection equation. 19 : * 20 : * \f{align*} 21 : * \partial_t U + \nabla \cdot (v U) = 0 22 : * \f} 23 : * 24 : * Since the ScalarAdvection system is only used for testing limiters in the 25 : * current implementation, the velocity field \f$v\f$ is fixed throughout time. 26 : */ 27 : namespace ScalarAdvection { 28 : template <size_t Dim> 29 0 : struct System { 30 0 : static constexpr bool is_in_flux_conservative_form = true; 31 0 : static constexpr bool has_primitive_and_conservative_vars = false; 32 0 : static constexpr size_t volume_dim = Dim; 33 : 34 0 : using boundary_conditions_base = BoundaryConditions::BoundaryCondition<Dim>; 35 0 : using boundary_correction_base = BoundaryCorrections::BoundaryCorrection<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