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 <pup.h>
       9             : #include <string>
      10             : 
      11             : #include "DataStructures/Tensor/TypeAliases.hpp"
      12             : #include "Evolution/Systems/GeneralizedHarmonic/GaugeSourceFunctions/Gauges.hpp"
      13             : #include "Options/String.hpp"
      14             : #include "PointwiseFunctions/InitialDataUtilities/InitialData.hpp"
      15             : #include "Utilities/TMPL.hpp"
      16             : 
      17             : /// \cond
      18             : class DataVector;
      19             : namespace gsl {
      20             : template <class T>
      21             : class not_null;
      22             : }  // namespace gsl
      23             : template <size_t Dim>
      24             : class Mesh;
      25             : /// \endcond
      26             : 
      27           1 : namespace gh::gauges {
      28             : /*!
      29             :  * \brief Imposes the analytic gauge condition,
      30             :  * \f$H_a=\Gamma_a^{\mathrm{analytic}}\f$ from an analytic solution or analytic
      31             :  * data.
      32             :  *
      33             :  * \warning Assumes \f$\partial_t \Gamma_a=0\f$ i.e. the solution is static or
      34             :  * in harmonic gauge.
      35             :  */
      36           1 : class AnalyticChristoffel final : public GaugeCondition {
      37             :  public:
      38             :   /// \brief What analytic solution/data to prescribe.
      39           1 :   struct AnalyticPrescription {
      40           0 :     static constexpr Options::String help =
      41             :         "What analytic solution/data to prescribe.";
      42           0 :     using type = std::unique_ptr<evolution::initial_data::InitialData>;
      43             :   };
      44             : 
      45           0 :   using options = tmpl::list<AnalyticPrescription>;
      46             : 
      47           0 :   static constexpr Options::String help{
      48             :       "Apply the analytic gauge condition H_a = Gamma_a, where Gamma_a comes "
      49             :       "from the AnalyticPrescription."};
      50             : 
      51           0 :   AnalyticChristoffel() = default;
      52           0 :   AnalyticChristoffel(const AnalyticChristoffel&);
      53           0 :   AnalyticChristoffel& operator=(const AnalyticChristoffel&);
      54           0 :   AnalyticChristoffel(AnalyticChristoffel&&) = default;
      55           0 :   AnalyticChristoffel& operator=(AnalyticChristoffel&&) = default;
      56           0 :   ~AnalyticChristoffel() override = default;
      57             : 
      58           0 :   explicit AnalyticChristoffel(
      59             :       std::unique_ptr<evolution::initial_data::InitialData>
      60             :           analytic_prescription);
      61             : 
      62             :   /// \cond
      63             :   explicit AnalyticChristoffel(CkMigrateMessage* msg);
      64             :   using PUP::able::register_constructor;
      65             :   WRAPPED_PUPable_decl_template(AnalyticChristoffel);  // NOLINT
      66             :   /// \endcond
      67             : 
      68             :   template <size_t SpatialDim>
      69           0 :   void gauge_and_spacetime_derivative(
      70             :       gsl::not_null<tnsr::a<DataVector, SpatialDim, Frame::Inertial>*> gauge_h,
      71             :       gsl::not_null<tnsr::ab<DataVector, SpatialDim, Frame::Inertial>*>
      72             :           d4_gauge_h,
      73             :       const Mesh<SpatialDim>& mesh, const double time,
      74             :       const tnsr::I<DataVector, SpatialDim, Frame::Inertial>& inertial_coords,
      75             :       const InverseJacobian<DataVector, SpatialDim, Frame::ElementLogical,
      76             :                             Frame::Inertial>& inverse_jacobian) const;
      77             : 
      78             :   // NOLINTNEXTLINE(google-runtime-references)
      79           0 :   void pup(PUP::er& p) override;
      80             : 
      81           0 :   std::unique_ptr<GaugeCondition> get_clone() const override;
      82             : 
      83             :  private:
      84           0 :   std::unique_ptr<evolution::initial_data::InitialData> analytic_prescription_;
      85             : };
      86             : }  // namespace gh::gauges