All available evolution systems and information on how to implement evolution systems. More...

Namespaces
namespace	Burgers
	Items related to evolving the Burgers equation \(0 = \partial_t U + \partial_x\left(U^2/2\right)\).

namespace	Cce
	The set of utilities for performing Cauchy characteristic evolution and Cauchy characteristic matching.

namespace	Ccz4
	Items related to evolving the first-order CCZ4 system.

namespace	CurvedScalarWave
	Items related to evolving a scalar wave on a curved background.

namespace	ForceFree
	Items related to evolving the GRFFE system with divergence cleaning.

namespace	gh
	Items related to evolving the first-order generalized harmonic system.

namespace	grmhd
	Items related to general relativistic magnetohydrodynamics (GRMHD)

namespace	NewtonianEuler
	Items related to evolving the Newtonian Euler system.

namespace	RadiationTransport
	Items related to general relativistic radiation transport.

namespace	RadiationTransport::NoNeutrinos
	Items related to general relativistic radiation transport.

namespace	ScalarAdvection
	Items related to evolving the scalar advection equation.

namespace	ScalarTensor
	Items related to evolving the first-order scalar tensor system.

namespace	ScalarWave
	Items related to evolving the scalar wave equation.

namespace	hydro
	Items related to hydrodynamic systems.

Detailed Description

All available evolution systems and information on how to implement evolution systems.

Actions and parallel components may require an evolution system to expose the following types:

volume_dim: The number of spatial dimensions
variables_tag: The evolved variables to compute DG volume contributions and fluxes for.
compute_time_derivative: A struct that computes the bulk contribution to the DG discretization of the time derivative. Must expose a tmpl::list of argument_tags and a static apply function that takes the following arguments in this order:
- First, the types of the tensors in db::add_tag_prefix<Metavariables::temporal_id::step_prefix, variables_tag> (which represent the time derivatives of the variables) as not-null pointers.
- The types of the argument_tags as constant references.

Actions and parallel components may also require the Metavariables to expose the following types:

system: See above.
temporal_id: A DataBox tag that identifies steps in the algorithm. Generally use Tags::TimeStepId.

Namespaces