ForceFree::AnalyticData::FfeBreakdown Class Reference

A test problem designed to show that the system initially satisfying the force-free conditions may violate those in a later time. More...

#include <FfeBreakdown.hpp>

Public Types
using	options = implementation defined

Public Member Functions
	FfeBreakdown (const FfeBreakdown &)=default
FfeBreakdown &	operator= (const FfeBreakdown &)=default
	FfeBreakdown (FfeBreakdown &&)=default
FfeBreakdown &	operator= (FfeBreakdown &&)=default
auto	get_clone () const -> std::unique_ptr< evolution::initial_data::InitialData > override
void	pup (PUP::er &p) override
template<typename... Tags>
tuples::TaggedTuple< Tags... >	variables (const tnsr::I< DataVector, 3 > &x, tmpl::list< Tags... >) const
	Retrieve a collection of EM variables at position x.
template<typename Tag >
tuples::TaggedTuple< Tag >	variables (const tnsr::I< DataVector, 3 > &x, tmpl::list< Tag >) const
	Retrieve the metric variables.
virtual auto	get_clone () const -> std::unique_ptr< InitialData >=0

Static Public Member Functions
static auto	variables (const tnsr::I< DataVector, 3 > &coords, tmpl::list< Tags::TildeE >) -> tuples::TaggedTuple< Tags::TildeE >
	Retrieve the EM variables at (x,t).
static auto	variables (const tnsr::I< DataVector, 3 > &coords, tmpl::list< Tags::TildeB >) -> tuples::TaggedTuple< Tags::TildeB >
	Retrieve the EM variables at (x,t).
static auto	variables (const tnsr::I< DataVector, 3 > &coords, tmpl::list< Tags::TildePsi >) -> tuples::TaggedTuple< Tags::TildePsi >
	Retrieve the EM variables at (x,t).
static auto	variables (const tnsr::I< DataVector, 3 > &coords, tmpl::list< Tags::TildePhi >) -> tuples::TaggedTuple< Tags::TildePhi >
	Retrieve the EM variables at (x,t).
static auto	variables (const tnsr::I< DataVector, 3 > &coords, tmpl::list< Tags::TildeQ >) -> tuples::TaggedTuple< Tags::TildeQ >
	Retrieve the EM variables at (x,t).

Static Public Attributes
static constexpr Options::String	help {"A FFE breakdown problem"}

Friends
bool	operator== (const FfeBreakdown &lhs, const FfeBreakdown &rhs)
bool	operator!= (const FfeBreakdown &lhs, const FfeBreakdown &rhs)

Detailed Description

A test problem designed to show that the system initially satisfying the force-free conditions may violate those in a later time.

This test was originally performed by [113]. We use the initial data with a linear transition layer as [68].

$$\begin{array}{rl}{B}^x& =1.0,\\ B^y& =B^z=\left\{\begin{array}{ll}1.0& \text{if }x<-0.1\\ -10x& \text{if }-0.1\le x\le 0.1\\ -1.0& \text{if }x>0.1\end{array}\right\},\\ E^x& =0.0,\\ E^y& =0.5,\\ E^z& =-0.5.\end{array}$$

As time progresses, $B^2-E^2$ approaches to zero.

Member Function Documentation

get_clone()

auto ForceFree::AnalyticData::FfeBreakdown::get_clone ( ) const -> std::unique_ptr< evolution::initial_data::InitialData >

overridevirtual

Implements evolution::initial_data::InitialData.

---

The documentation for this class was generated from the following file:

• src/PointwiseFunctions/AnalyticData/ForceFree/FfeBreakdown.hpp