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 <string>
       8              : 
       9              : #include "DataStructures/DataBox/Tag.hpp"
      10              : #include "DataStructures/Tensor/IndexType.hpp"
      11              : #include "DataStructures/Tensor/TypeAliases.hpp"
      12              : #include "PointwiseFunctions/GeneralRelativity/TagsDeclarations.hpp"
      13              : #include "PointwiseFunctions/Hydro/Tags.hpp"
      14              : #include "PointwiseFunctions/Hydro/TagsDeclarations.hpp"
      15              : #include "Utilities/Gsl.hpp"
      16              : 
      17              : namespace hydro::Tags {
      18              : 
      19              : /*!
      20              :  * \brief Computes $u_i=W \gamma_{ij} v^j$, where $W$ is the Lorentz factor,
      21              :  * $\gamma_{ij}$ is the spatial metric, and $v^j$ is the spatial velocity.
      22              :  *
      23              :  */
      24            1 : struct LowerSpatialFourVelocityCompute
      25              :     : LowerSpatialFourVelocity<DataVector, 3, Frame::Inertial>,
      26              :       db::ComputeTag {
      27            0 :   using base = LowerSpatialFourVelocity<DataVector, 3, Frame::Inertial>;
      28            0 :   using argument_tags =
      29              :       tmpl::list<SpatialVelocity<DataVector, 3, Frame::Inertial>,
      30              :                  gr::Tags::SpatialMetric<DataVector, 3>,
      31              :                  LorentzFactor<DataVector>>;
      32            0 :   static void function(const gsl::not_null<tnsr::i<DataVector, 3>*> result,
      33              :                        const tnsr::I<DataVector, 3>& spatial_velocity,
      34              :                        const tnsr::ii<DataVector, 3>& spatial_metric,
      35              :                        const Scalar<DataVector>& lorentz_factor);
      36              : };
      37              : 
      38              : }  // namespace hydro::Tags