SpECTRE Documentation Coverage Report
Current view: top level - Evolution/Systems/ScalarWave - Tags.hpp Hit Total Coverage
Commit: aabde07399ba7837e5db64eedfd0a21f31f96922 Lines: 9 31 29.0 %
Date: 2024-04-26 02:38:13
Legend: Lines: hit not hit

          Line data    Source code
       1           1 : // Distributed under the MIT License.
       2             : // See LICENSE.txt for details.
       3             : 
       4             : /// \file
       5             : /// Defines DataBox tags for scalar wave system
       6             : 
       7             : #pragma once
       8             : 
       9             : #include <cstddef>
      10             : #include <string>
      11             : 
      12             : #include "DataStructures/DataBox/Prefixes.hpp"
      13             : #include "DataStructures/DataBox/Tag.hpp"
      14             : #include "DataStructures/Tensor/TypeAliases.hpp"
      15             : #include "Evolution/Systems/ScalarWave/TagsDeclarations.hpp"
      16             : 
      17             : class DataVector;
      18             : 
      19             : namespace ScalarWave::Tags {
      20             : /*!
      21             :  * \brief The scalar field.
      22             :  */
      23           1 : struct Psi : db::SimpleTag {
      24           0 :   using type = Scalar<DataVector>;
      25             : };
      26             : 
      27             : /*!
      28             :  * \brief Auxiliary variable which is analytically the negative time derivative
      29             :  * of the scalar field.
      30             :  * \details If \f$\Psi\f$ is the scalar field then we define
      31             :  * \f$\Pi = -\partial_t \Psi\f$
      32             :  */
      33           1 : struct Pi : db::SimpleTag {
      34           0 :   using type = Scalar<DataVector>;
      35             : };
      36             : 
      37             : /*!
      38             :  * \brief Auxiliary variable which is analytically the spatial derivative of the
      39             :  * scalar field.
      40             :  * \details If \f$\Psi\f$ is the scalar field then we define
      41             :  * \f$\Phi_{i} = \partial_i \Psi\f$
      42             :  */
      43             : template <size_t Dim>
      44           1 : struct Phi : db::SimpleTag {
      45           0 :   using type = tnsr::i<DataVector, Dim, Frame::Inertial>;
      46             : };
      47             : 
      48           0 : struct ConstraintGamma2 : db::SimpleTag {
      49           0 :   using type = Scalar<DataVector>;
      50             : };
      51             : 
      52             : /*!
      53             :  * \brief Tag for the one-index constraint of the ScalarWave system
      54             :  *
      55             :  * For details on how this is defined and computed, see
      56             :  * `OneIndexConstraintCompute`.
      57             :  */
      58             : template <size_t Dim>
      59           1 : struct OneIndexConstraint : db::SimpleTag {
      60           0 :   using type = tnsr::i<DataVector, Dim, Frame::Inertial>;
      61             : };
      62             : /*!
      63             :  * \brief Tag for the two-index constraint of the ScalarWave system
      64             :  *
      65             :  * For details on how this is defined and computed, see
      66             :  * `TwoIndexConstraintCompute`.
      67             :  */
      68             : template <size_t Dim>
      69           1 : struct TwoIndexConstraint : db::SimpleTag {
      70           0 :   using type = tnsr::ij<DataVector, Dim, Frame::Inertial>;
      71             : };
      72             : 
      73             : /// @{
      74             : /// \brief Tags corresponding to the characteristic fields of the flat-spacetime
      75             : /// scalar-wave system.
      76             : ///
      77             : /// \details For details on how these are defined and computed, \see
      78             : /// CharacteristicSpeedsCompute
      79           1 : struct VPsi : db::SimpleTag {
      80           0 :   using type = Scalar<DataVector>;
      81             : };
      82             : template <size_t Dim>
      83           0 : struct VZero : db::SimpleTag {
      84           0 :   using type = tnsr::i<DataVector, Dim, Frame::Inertial>;
      85             : };
      86           0 : struct VPlus : db::SimpleTag {
      87           0 :   using type = Scalar<DataVector>;
      88             : };
      89           0 : struct VMinus : db::SimpleTag {
      90           0 :   using type = Scalar<DataVector>;
      91             : };
      92             : /// @}
      93             : 
      94             : template <size_t Dim>
      95           0 : struct CharacteristicSpeeds : db::SimpleTag {
      96           0 :   using type = std::array<DataVector, 4>;
      97             : };
      98             : 
      99             : template <size_t Dim>
     100           0 : struct CharacteristicFields : db::SimpleTag {
     101           0 :   using type = Variables<tmpl::list<VPsi, VZero<Dim>, VPlus, VMinus>>;
     102             : };
     103             : 
     104             : template <size_t Dim>
     105           0 : struct EvolvedFieldsFromCharacteristicFields : db::SimpleTag {
     106           0 :   using type = Variables<tmpl::list<Psi, Pi, Phi<Dim>>>;
     107             : };
     108             : 
     109             : /// The energy density of the scalar wave
     110             : template <size_t Dim>
     111           1 : struct EnergyDensity : db::SimpleTag {
     112           0 :   using type = Scalar<DataVector>;
     113             : };
     114             : 
     115             : /// The momentum density of the scalar wave
     116             : template <size_t Dim>
     117           1 : struct MomentumDensity : db::SimpleTag {
     118           0 :   using type = tnsr::i<DataVector, Dim, Frame::Inertial>;
     119             : };
     120             : 
     121             : }  // namespace ScalarWave::Tags

Generated by: LCOV version 1.14