RadiationTransport::M1Grey::AnalyticData::HomogeneousSphere Class Reference

Construct a homogeneous sphere of neutrino radiation. More...

#include <HomogeneousSphere.hpp>

Classes
struct	BoundaryRoundness
	BoundaryRoundness. More...
struct	EmissivityAndOpacity
	The emissivity and absorption opacity. More...
struct	OuterOpacity
	The absorption opacity of the exterior. More...
struct	Radius
	The sphere radius. More...

Public Types
using	options = tmpl::list< Radius, EmissivityAndOpacity, OuterOpacity, BoundaryRoundness >

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

Static Public Attributes
static constexpr Options::String	help

Friends
bool	operator== (const HomogeneousSphere &lhs, const HomogeneousSphere &rhs)
template<typename NeutrinoSpecies >
auto	variables (const tnsr::I< DataVector, 3 > &x, tmpl::list< RadiationTransport::M1Grey::Tags::TildeE< Frame::Inertial, NeutrinoSpecies > >) const -> tuples::TaggedTuple< RadiationTransport::M1Grey::Tags::TildeE< Frame::Inertial, NeutrinoSpecies > >
	Retrieve fluid and neutrino variables.
template<typename NeutrinoSpecies >
auto	variables (const tnsr::I< DataVector, 3 > &x, tmpl::list< RadiationTransport::M1Grey::Tags::TildeS< Frame::Inertial, NeutrinoSpecies > >) const -> tuples::TaggedTuple< RadiationTransport::M1Grey::Tags::TildeS< Frame::Inertial, NeutrinoSpecies > >
	Retrieve fluid and neutrino variables.
template<typename NeutrinoSpecies >
auto	variables (const tnsr::I< DataVector, 3 > &x, tmpl::list< RadiationTransport::M1Grey::Tags::GreyEmissivity< NeutrinoSpecies > >) const -> tuples::TaggedTuple< RadiationTransport::M1Grey::Tags::GreyEmissivity< NeutrinoSpecies > >
	Retrieve fluid and neutrino variables.
template<typename NeutrinoSpecies >
auto	variables (const tnsr::I< DataVector, 3 > &x, tmpl::list< RadiationTransport::M1Grey::Tags::GreyAbsorptionOpacity< NeutrinoSpecies > >) const -> tuples::TaggedTuple< RadiationTransport::M1Grey::Tags::GreyAbsorptionOpacity< NeutrinoSpecies > >
	Retrieve fluid and neutrino variables.
template<typename NeutrinoSpecies >
auto	variables (const tnsr::I< DataVector, 3 > &x, tmpl::list< RadiationTransport::M1Grey::Tags::GreyScatteringOpacity< NeutrinoSpecies > >) const -> tuples::TaggedTuple< RadiationTransport::M1Grey::Tags::GreyScatteringOpacity< NeutrinoSpecies > >
	Retrieve fluid and neutrino variables.
static auto	variables (const tnsr::I< DataVector, 3 > &x, tmpl::list< hydro::Tags::LorentzFactor< DataVector > >) -> tuples::TaggedTuple< hydro::Tags::LorentzFactor< DataVector > >
	Retrieve fluid and neutrino variables.
static auto	variables (const tnsr::I< DataVector, 3 > &x, tmpl::list< hydro::Tags::SpatialVelocity< DataVector, 3 > >) -> tuples::TaggedTuple< hydro::Tags::SpatialVelocity< DataVector, 3 > >
	Retrieve fluid and neutrino variables.

Detailed Description

Construct a homogeneous sphere of neutrino radiation.

We follow the homogeneous sphere test problem in Section 4.5 of [173]. The initial data has radius = 1, with equal emissivity and absorption \(\eta = \kappa_a = 10\) inside the uniform sphere. Outside of the sphere the absorption is much lower, allowing the neutrinos to stream out. Initially the neutrino energy density is distributed uniformly inside the sphere. The momentum density is initialized to 0.

Note: To avoid sharp discontinuities, we round the edges of the energy profile with an arctangent function, instead of the step function, which has sharper features.

Member Function Documentation

get_clone()

auto RadiationTransport::M1Grey::AnalyticData::HomogeneousSphere::get_clone ( ) const -> std::unique_ptr< evolution::initial_data::InitialData >

overridevirtual

Implements evolution::initial_data::InitialData.

Member Data Documentation

help

constexpr Options::String RadiationTransport::M1Grey::AnalyticData::HomogeneousSphere::help

staticconstexpr

Initial value:

= {
      "A homogeneous sphere emitting and absorbing neutrinos."}

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

• src/PointwiseFunctions/AnalyticData/RadiationTransport/M1Grey/HomogeneousSphere.hpp