NewtonianEuler::ComputeSources< InitialDataType > Struct Template Reference

Compute the source terms for the NewtonianEuler evolution using a problem-specific source. More...

#include <Sources.hpp>

Public Types
using	return_tags = db::wrap_tags_in<::Tags::Source, typename source_term_type::sourced_variables >
using	argument_tags = tmpl::push_front< typename source_term_type::argument_tags, Tags::SourceTerm< InitialDataType > >

Static Public Member Functions
template<class... Args>
static void	apply (const Args &... args) noexcept

Detailed Description

template<typename InitialDataType>
struct NewtonianEuler::ComputeSources< InitialDataType >

Compute the source terms for the NewtonianEuler evolution using a problem-specific source.

Details

The source term type is fetched from the initial data, so any InitialDataType instance must have a type alias source_term_type. In turn, any source term type used by ComputeSources must hold type aliases sourced_variables and argument_tags, which are tmpl::lists of the variables whose equations of motion require a source term, and the arguments required to compute those source terms, respectively. The source term must also hold a public void member function apply whose arguments are gsl::not_null pointers to the variables storing the source terms, followed by the arguments required to compute them. See NewtonianEuler::Sources::UniformAcceleration for an example.

While most of physically relevant source terms for the Newtonian Euler equations do not add a source term for the mass density, this class allows for problems that source any set of conserved variables (at least one variable is required).