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             : #include <memory>
       8             : #include <optional>
       9             : #include <string>
      10             : #include <tuple>
      11             : #include <unordered_map>
      12             : 
      13             : #include "DataStructures/DataBox/Tag.hpp"
      14             : #include "DataStructures/DataVector.hpp"
      15             : #include "DataStructures/Tensor/EagerMath/Magnitude.hpp"  // For Tags::Normalized
      16             : #include "DataStructures/Tensor/Tensor.hpp"
      17             : #include "Domain/CoordinateMaps/CoordinateMap.hpp"
      18             : #include "Domain/FaceNormal.hpp"
      19             : #include "Domain/FunctionsOfTime/FunctionOfTime.hpp"
      20             : #include "Domain/FunctionsOfTime/Tags.hpp"
      21             : #include "Domain/Tags.hpp"
      22             : #include "Utilities/Gsl.hpp"
      23             : #include "Utilities/TMPL.hpp"
      24             : 
      25             : /// \cond
      26             : namespace Tags {
      27             : struct Time;
      28             : }  // namespace Tags
      29             : /// \endcond
      30             : 
      31             : namespace domain {
      32             : /// \ingroup ComputationalDomainGroup
      33             : /// \brief %Tags for the domain.
      34             : namespace Tags {
      35             : /// The Inertial coordinates, the inverse Jacobian from the Grid to the Inertial
      36             : /// frame, the Jacobian from the Grid to the Inertial frame, and the Inertial
      37             : /// mesh velocity.
      38             : ///
      39             : /// The type is a `std::optional`, which, when is not valid, signals that the
      40             : /// mesh is not moving. Thus,
      41             : /// `coordinates_velocity_and_jacobian.has_value()` can be used to check
      42             : /// if the mesh is moving.
      43             : template <size_t Dim>
      44           1 : struct CoordinatesMeshVelocityAndJacobians : db::SimpleTag {
      45           0 :   using type = std::optional<std::tuple<
      46             :       tnsr::I<DataVector, Dim, Frame::Inertial>,
      47             :       ::InverseJacobian<DataVector, Dim, Frame::Grid, Frame::Inertial>,
      48             :       ::Jacobian<DataVector, Dim, Frame::Grid, Frame::Inertial>,
      49             :       tnsr::I<DataVector, Dim, Frame::Inertial>>>;
      50             : };
      51             : 
      52             : /// Computes the Inertial coordinates, the inverse Jacobian from the Grid to the
      53             : /// Inertial frame, the Jacobian from the Grid to the Inertial frame, and the
      54             : /// Inertial mesh velocity.
      55             : template <typename MapTagGridToInertial>
      56           1 : struct CoordinatesMeshVelocityAndJacobiansCompute
      57             :     : CoordinatesMeshVelocityAndJacobians<MapTagGridToInertial::dim>,
      58             :       db::ComputeTag {
      59           0 :   static constexpr size_t dim = MapTagGridToInertial::dim;
      60           0 :   using base = CoordinatesMeshVelocityAndJacobians<dim>;
      61             : 
      62           0 :   using return_type = typename base::type;
      63             : 
      64           0 :   static void function(
      65             :       const gsl::not_null<return_type*> result,
      66             :       const domain::CoordinateMapBase<Frame::Grid, Frame::Inertial, dim>&
      67             :           grid_to_inertial_map,
      68             :       const tnsr::I<DataVector, dim, Frame::Grid>& source_coords,
      69             :       const double time,
      70             :       const std::unordered_map<
      71             :           std::string,
      72             :           std::unique_ptr<domain::FunctionsOfTime::FunctionOfTime>>&
      73             :           functions_of_time) {
      74             :     // Use identity to signal time-independent
      75             :     if (not grid_to_inertial_map.is_identity()) {
      76             :       *result = grid_to_inertial_map.coords_frame_velocity_jacobians(
      77             :           source_coords, time, functions_of_time);
      78             :     } else {
      79             :       *result = std::nullopt;
      80             :     }
      81             :   }
      82             : 
      83           0 :   using argument_tags =
      84             :       tmpl::list<MapTagGridToInertial, Tags::Coordinates<dim, Frame::Grid>,
      85             :                  ::Tags::Time, Tags::FunctionsOfTime>;
      86             : };
      87             : 
      88             : /// Computes the Inertial coordinates from
      89             : /// `CoordinatesVelocityAndJacobians`
      90             : template <size_t Dim>
      91           1 : struct InertialFromGridCoordinatesCompute
      92             :     : Tags::Coordinates<Dim, Frame::Inertial>,
      93             :       db::ComputeTag {
      94           0 :   using base = Tags::Coordinates<Dim, Frame::Inertial>;
      95           0 :   using return_type = typename base::type;
      96             : 
      97           0 :   static void function(
      98             :       gsl::not_null<tnsr::I<DataVector, Dim, Frame::Inertial>*> target_coords,
      99             :       const tnsr::I<DataVector, Dim, Frame::Grid>& source_coords,
     100             :       const std::optional<std::tuple<
     101             :           tnsr::I<DataVector, Dim, Frame::Inertial>,
     102             :           ::InverseJacobian<DataVector, Dim, Frame::Grid, Frame::Inertial>,
     103             :           ::Jacobian<DataVector, Dim, Frame::Grid, Frame::Inertial>,
     104             :           tnsr::I<DataVector, Dim, Frame::Inertial>>>&
     105             :           grid_to_inertial_quantities);
     106             : 
     107           0 :   using argument_tags = tmpl::list<Tags::Coordinates<Dim, Frame::Grid>,
     108             :                                    CoordinatesMeshVelocityAndJacobians<Dim>>;
     109             : };
     110             : 
     111             : /// Computes the Grid to Inertial inverse Jacobian from
     112             : /// `CoordinatesVelocityAndJacobians`. If the mesh is not moving, requesting
     113             : /// this tag will throw an error because the Jacobian is just the identity.
     114             : template <size_t Dim>
     115           1 : struct GridToInertialInverseJacobian
     116             :     : Tags::InverseJacobian<Dim, Frame::Grid, Frame::Inertial>,
     117             :       db::ComputeTag {
     118           0 :   using base = Tags::InverseJacobian<Dim, Frame::Grid, Frame::Inertial>;
     119           0 :   using return_type = typename base::type;
     120             : 
     121           0 :   static void function(
     122             :       gsl::not_null<
     123             :           ::InverseJacobian<DataVector, Dim, Frame::Grid, Frame::Inertial>*>
     124             :           inv_jac_grid_to_inertial,
     125             :       const std::optional<std::tuple<
     126             :           tnsr::I<DataVector, Dim, Frame::Inertial>,
     127             :           ::InverseJacobian<DataVector, Dim, Frame::Grid, Frame::Inertial>,
     128             :           ::Jacobian<DataVector, Dim, Frame::Grid, Frame::Inertial>,
     129             :           tnsr::I<DataVector, Dim, Frame::Inertial>>>&
     130             :           grid_to_inertial_quantities);
     131             : 
     132           0 :   using argument_tags = tmpl::list<CoordinatesMeshVelocityAndJacobians<Dim>>;
     133             : };
     134             : 
     135             : /// Computes the Logical to Inertial inverse Jacobian from
     136             : /// `CoordinatesVelocityAndJacobians`
     137             : template <size_t Dim>
     138           1 : struct ElementToInertialInverseJacobian
     139             :     : Tags::InverseJacobian<Dim, Frame::ElementLogical, Frame::Inertial>,
     140             :       db::ComputeTag {
     141           0 :   using base =
     142             :       Tags::InverseJacobian<Dim, Frame::ElementLogical, Frame::Inertial>;
     143           0 :   using return_type = typename base::type;
     144             : 
     145           0 :   static void function(
     146             :       gsl::not_null<::InverseJacobian<DataVector, Dim, Frame::ElementLogical,
     147             :                                       Frame::Inertial>*>
     148             :           inv_jac_logical_to_inertial,
     149             :       const ::InverseJacobian<DataVector, Dim, Frame::ElementLogical,
     150             :                               Frame::Grid>& inv_jac_logical_to_grid,
     151             :       const std::optional<std::tuple<
     152             :           tnsr::I<DataVector, Dim, Frame::Inertial>,
     153             :           ::InverseJacobian<DataVector, Dim, Frame::Grid, Frame::Inertial>,
     154             :           ::Jacobian<DataVector, Dim, Frame::Grid, Frame::Inertial>,
     155             :           tnsr::I<DataVector, Dim, Frame::Inertial>>>&
     156             :           grid_to_inertial_quantities);
     157             : 
     158           0 :   using argument_tags =
     159             :       tmpl::list<Tags::InverseJacobian<Dim, Frame::ElementLogical, Frame::Grid>,
     160             :                  CoordinatesMeshVelocityAndJacobians<Dim>>;
     161             : };
     162             : 
     163             : /// The mesh velocity
     164             : ///
     165             : /// The type is a `std::optional`, which when it is not set indicates that the
     166             : /// mesh is not moving.
     167             : template <size_t Dim, typename Frame = ::Frame::Inertial>
     168           1 : struct MeshVelocity : db::SimpleTag {
     169           0 :   using type = std::optional<tnsr::I<DataVector, Dim, Frame>>;
     170             : };
     171             : 
     172             : /// Computes the Inertial mesh velocity from `CoordinatesVelocityAndJacobians`
     173             : ///
     174             : /// The type is a `std::optional`, which when it is not set indicates that the
     175             : /// mesh is not moving.
     176             : template <size_t Dim>
     177           1 : struct InertialMeshVelocityCompute : MeshVelocity<Dim, Frame::Inertial>,
     178             :                                      db::ComputeTag {
     179           0 :   using base = MeshVelocity<Dim, Frame::Inertial>;
     180           0 :   using return_type = typename base::type;
     181             : 
     182           0 :   static void function(
     183             :       gsl::not_null<return_type*> mesh_velocity,
     184             :       const std::optional<std::tuple<
     185             :           tnsr::I<DataVector, Dim, Frame::Inertial>,
     186             :           ::InverseJacobian<DataVector, Dim, Frame::Grid, Frame::Inertial>,
     187             :           ::Jacobian<DataVector, Dim, Frame::Grid, Frame::Inertial>,
     188             :           tnsr::I<DataVector, Dim, Frame::Inertial>>>&
     189             :           grid_to_inertial_quantities);
     190             : 
     191           0 :   using argument_tags = tmpl::list<CoordinatesMeshVelocityAndJacobians<Dim>>;
     192             : };
     193             : 
     194             : /// The divergence of the mesh velocity
     195           1 : struct DivMeshVelocity : db::SimpleTag {
     196           0 :   using type = std::optional<Scalar<DataVector>>;
     197           0 :   static std::string name() { return "div(MeshVelocity)"; }
     198             : };
     199             : }  // namespace Tags
     200             : }  // namespace domain