VariableFixing::RadiallyFallingFloor< Dim > Class Template Reference

Applies a pressure and density floor dependent on the distance to the origin. More...

#include <RadiallyFallingFloor.hpp>

Classes
struct	MinimumRadius
	The minimum radius at which to begin applying the floors on the density and pressure. More...
struct	PowerDensityFloor
	The power of the radius of the floor of the rest mass density. More...
struct	PowerPressureFloor
	The power of the radius of the floor of the pressure. More...
struct	ScaleDensityFloor
	The scale of the floor of the rest mass density. More...
struct	ScalePressureFloor
	The scale of the floor of the pressure. More...

Public Types
using	options = tmpl::list< MinimumRadius, ScaleDensityFloor, PowerDensityFloor, ScalePressureFloor, PowerPressureFloor >
using	return_tags = tmpl::list< hydro::Tags::RestMassDensity< DataVector >, hydro::Tags::Pressure< DataVector > >
using	argument_tags = tmpl::list< domain::Tags::Coordinates< Dim, Frame::Inertial > >

Public Member Functions
	RadiallyFallingFloor (double minimum_radius_at_which_to_apply_floor, double rest_mass_density_scale, double rest_mass_density_power, double pressure_scale, double pressure_power) noexcept
	RadiallyFallingFloor (const RadiallyFallingFloor &)=default
RadiallyFallingFloor &	operator= (const RadiallyFallingFloor &)=default
	RadiallyFallingFloor (RadiallyFallingFloor &&) noexcept=default
RadiallyFallingFloor &	operator= (RadiallyFallingFloor &&) noexcept=default
void	pup (PUP::er &p) noexcept
void	operator() (gsl::not_null< Scalar< DataVector > * > density, gsl::not_null< Scalar< DataVector > * > pressure, const tnsr::I< DataVector, Dim, Frame::Inertial > &coords) const noexcept

Static Public Attributes
static constexpr Options::String	help

Friends
template<size_t LocalDim>
bool	operator== (const RadiallyFallingFloor< LocalDim > &lhs, const RadiallyFallingFloor< LocalDim > &rhs) noexcept

Detailed Description

template<size_t Dim>
class VariableFixing::RadiallyFallingFloor< Dim >

Applies a pressure and density floor dependent on the distance to the origin.

Applies the floors: \(\rho(r) \geq \rho_{\mathrm{fl}}(r) = C_\rho r^{k_\rho}\) and \(P(r) \geq P_{\mathrm{fl}}(r) = C_p r^{k_p}\) when \( r > r_{min}\), where \(C_\rho\) is given by the option ScaleDensityFloor, \(k_\rho\) is given by the option PowerDensityFloor, \(C_p\) is given by the option ScalePressureFloor, \(k_p\) is given by the option PowerPressureFloor, and \(r_{min}\) is given by the option MinimumRadius.

Note

In [89], the following floors are applied: \(\rho(r) \geq \rho_{\mathrm{fl}}(r) = 10^{-5}r^{-3/2}\) and \(P(r) \geq P_{\mathrm{fl}}(r) = \frac{1}{3} \times 10^{-7}r^{-5/2}\)

Member Data Documentation

help

template<size_t Dim>

constexpr Options::String VariableFixing::RadiallyFallingFloor< Dim >::help

staticconstexpr

Initial value:

= {
      "Applies a pressure and density floor dependent on the distance to the "
      "origin."}