Actions::ComputeVolumeFluxes Struct Reference

Compute the volume fluxes of the evolved variables. More...

#include <ComputeVolumeFluxes.hpp>

Static Public Member Functions
template<typename DbTagsList , typename... InboxTags, typename Metavariables , typename ArrayIndex , typename ActionList , typename ParallelComponent , Requires< tmpl::size< DbTagsList >::value !=0 > = nullptr>
static std::tuple< db::DataBox< DbTagsList > && >	apply (db::DataBox< DbTagsList > &box, const tuples::TaggedTuple< InboxTags... > &, const Parallel::GlobalCache< Metavariables > &, const ArrayIndex &, ActionList, const ParallelComponent *const) noexcept

Detailed Description

Compute the volume fluxes of the evolved variables.

The mesh velocity is added to the flux automatically if the mesh is moving. That is,

\begin{align} F^i_{\alpha}\to F^i_{\alpha}-v^i_{g} u_{\alpha} \end{align}

where \(F^i_{\alpha}\) are the fluxes when the mesh isn't moving, \(v^i_g\) is the velocity of the mesh, and \(u_{\alpha}\) are the evolved variables.

Uses:

• DataBox:
  • Items in system::volume_fluxes::argument_tags
  • domain::Tags::MeshVelocity<Metavariables::volume_dim>
  • Metavariables::system::variables_tag

DataBox changes:

• Adds: nothing
• Removes: nothing
• Modifies: db::add_tag_prefix<Tags::Flux, variables_tag, tmpl::size_t<system::volume_dim>, Frame::Inertial>