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 = tmpl::list<>

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 [105]. We use the initial data with a linear transition layer as [62].

\begin{align*} B^x & = 1.0 , \\ B^y & = B^z = \left\{\begin{array}{ll} 1.0 & \text{if } x < -0.1 \\ -10x & \text{if } -0.1 \leq x \leq 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{align*}

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.

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

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