SpECTRE  v2024.04.12
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EquationsOfState::HybridEos< ColdEquationOfState > Class Template Reference
Equations of State

Hybrid equation of state combining a barotropic EOS for cold (zero-temperature) part with a simple thermal part. More...

#include <HybridEos.hpp>

Classes

struct  ColdEos
 
struct  ThermalAdiabaticIndex
 

Public Types

using options = tmpl::list< ColdEos, ThermalAdiabaticIndex >
 

Public Member Functions

 HybridEos (const HybridEos &)=default
 
HybridEos & operator= (const HybridEos &)=default
 
 HybridEos (HybridEos &&)=default
 
HybridEos & operator= (HybridEos &&)=default
 
 HybridEos (ColdEquationOfState cold_eos, double thermal_adiabatic_index)
 
 WRAPPED_PUPable_decl_base_template (SINGLE_ARG(EquationOfState< is_relativistic, 2 >), HybridEos)
 
std::unique_ptr< EquationOfState< is_relativistic, 2 > > get_clone () const override
 
std::unique_ptr< EquationOfState< is_relativistic, 3 > > promote_to_3d_eos () const override
 
bool is_barotropic () const override
 Returns true if the EOS is barotropic.
 
bool operator== (const HybridEos< ColdEquationOfState > &rhs) const
 
bool operator!= (const HybridEos< ColdEquationOfState > &rhs) const
 
bool is_equal (const EquationOfState< is_relativistic, 2 > &rhs) const override
 
double rest_mass_density_lower_bound () const override
 The lower bound of the rest mass density that is valid for this EOS.
 
double rest_mass_density_upper_bound () const override
 The upper bound of the rest mass density that is valid for this EOS.
 
double specific_internal_energy_lower_bound (const double rest_mass_density) const override
 The lower bound of the specific internal energy that is valid for this EOS at the given rest mass density \(\rho\).
 
double specific_internal_energy_upper_bound (const double) const override
 The upper bound of the specific internal energy that is valid for this EOS at the given rest mass density \(\rho\).
 
double specific_enthalpy_lower_bound () const override
 The lower bound of the specific enthalpy that is valid for this EOS.
 
double baryon_mass () const override
 The vacuum baryon mass for this EoS.
 

Static Public Member Functions

static std::string name ()
 

Static Public Attributes

static constexpr size_t thermodynamic_dim = 2
 
static constexpr bool is_relativistic = ColdEquationOfState::is_relativistic
 
static constexpr Options::String help
 

Detailed Description

template<typename ColdEquationOfState>
class EquationsOfState::HybridEos< ColdEquationOfState >

Hybrid equation of state combining a barotropic EOS for cold (zero-temperature) part with a simple thermal part.

The hybrid equation of state:

\[ p = p_{cold}(\rho) + \rho (\Gamma_{th}-1) (\epsilon - \epsilon_{cold}(\rho)) \]

where \(p\) is the pressure, \(\rho\) is the rest mass density, \(\epsilon\) is the specific internal energy, \(p_{cold}\) and \(\epsilon_{cold}\) are the pressure and specific internal energy evaluated using the cold EOS, and \(\Gamma_{th}\) is the adiabatic index for the thermal part.

The temperature \(T\) is defined as

\[ T = (\Gamma_{th} - 1) (\epsilon - \epsilon_{cold}) \]

Member Data Documentation

◆ help

template<typename ColdEquationOfState >
constexpr Options::String EquationsOfState::HybridEos< ColdEquationOfState >::help
staticconstexpr
Initial value:
= {
"A hybrid equation of state combining a cold EOS with a simple thermal "
"part. The pressure is related to the rest mass density by "
" p = p_cold(rho) + rho * (Gamma_th - 1) * (epsilon - "
"epsilon_cold(rho)), where p is the pressure, rho is the rest mass "
"density, epsilon is the specific internal energy, p_cold and "
"epsilon_cold are the pressure and specific internal energy evaluated "
"using the cold EOS and Gamma_th is the adiabatic index for the thermal "
"part."}
The documentation for this class was generated from the following file: