Detailed Description

Definition at line 32 of file CubicBackend.h.

#include <CubicBackend.h>

Inheritance diagram for CoolProp::AbstractCubicBackend:

Public Member Functions
void	setup (bool generate_SatL_and_SatV=true)
	Set the pointer to the residual helmholtz class, etc. More...

void	set_alpha_from_components ()
	Set the alpha function based on the alpha function defined in the components vector;. More...

void	set_alpha0_from_components ()
	Set the non-dimensionalized Helmholtz energy based on the fluids defined in the components vector. More...

shared_ptr< AbstractCubic > &	get_cubic ()
	Get a reference to the shared pointer managing the generalized cubic class. More...

std::vector< std::string >	calc_fluid_names (void)
	Using this backend, get a vector of fluid names. More...

bool	using_mole_fractions (void)

bool	using_mass_fractions (void)

bool	using_volu_fractions (void)

void	set_mass_fractions (const std::vector< CoolPropDbl > &mass_fractions)

void	set_volu_fractions (const std::vector< CoolPropDbl > &volu_fractions)

const std::vector< CoolPropDbl > &	get_mole_fractions (void)
	Get the mole fractions of the fluid. More...

const double	get_fluid_constant (std::size_t i, parameters param) const

std::string	fluid_param_string (const std::string &)
	Return a string from the backend for the mixture/fluid. More...

CoolPropDbl	calc_gas_constant (void)
	Calculate the gas constant in J/mol/K. More...

SimpleState	calc_reducing_state_nocache (const std::vector< CoolPropDbl > &mole_fractions)
	Get the reducing state to be used. More...

CoolPropDbl	calc_reduced_density (void)
	Using this backend, calculate the reduced density (rho/rhoc) More...

CoolPropDbl	calc_reciprocal_reduced_temperature (void)
	Using this backend, calculate the reciprocal reduced temperature (Tc/T) More...

std::vector< double >	spinodal_densities ()

CoolPropDbl	calc_T_critical (void)
	Using this backend, get the critical point temperature in K. More...

CoolPropDbl	calc_p_critical (void)
	Using this backend, get the critical point pressure in Pa. More...

CoolPropDbl	calc_acentric_factor (void)
	Using this backend, calculate the acentric factor. More...

CoolPropDbl	calc_rhomolar_critical (void)
	Using this backend, get the critical point molar density in mol/m^3. More...

void	get_linear_reducing_parameters (double &rhomolar, double &T)
	Get linear mole fraction weighting of the critical molar volumes and temperatures these are used in te. More...

void	get_critical_point_starting_values (double &delta0, double &tau0)
	Get the the starting values for the critical point evaluation routines. More...

void	get_critical_point_search_radii (double &R_delta, double &R_tau)
	Get the search radius in delta and tau for the tracer, scaled appropriately for cubic. More...

bool	get_critical_is_terminated (double &delta, double &tau)
	Checking function to see if we should stop the tracing of the critical contour. More...

CoolPropDbl	calc_alphar_deriv_nocache (const int nTau, const int nDelta, const std::vector< CoolPropDbl > &mole_fractions, const CoolPropDbl &tau, const CoolPropDbl &delta)

CoolPropDbl	calc_pressure_nocache (CoolPropDbl T, CoolPropDbl rhomolar)
	Calculate the pressure in most computationally efficient manner. More...

virtual void	update_DmolarT ()
	Update the state for DT inputs if phase is imposed. Otherwise delegate to base class. More...

virtual void	update (CoolProp::input_pairs input_pair, double value1, double value2)
	The standard update function. More...

void	rho_Tp_cubic (CoolPropDbl T, CoolPropDbl p, int &Nsolns, double &rho0, double &rho1, double &rho2)

CoolPropDbl	solver_rho_Tp_SRK (CoolPropDbl T, CoolPropDbl p, phases phase)
	In this class, we are already doing cubic evaluation, just delegate to our function. More...

CoolPropDbl	solver_rho_Tp (CoolPropDbl T, CoolPropDbl p, CoolPropDbl rho_guess=-1)

CoolPropDbl	solver_rho_Tp_global (CoolPropDbl T, CoolPropDbl p, CoolPropDbl rhomax)

void	update_TPD_state ()
	Update the state used to calculate the tangent-plane-distance. More...

void	saturation (CoolProp::input_pairs inputs)
	Cubic backend flashes for PQ, and QT. More...

CoolPropDbl	calc_molar_mass (void)
	Using this backend, calculate the molar mass in kg/mol. More...

void	set_binary_interaction_double (const std::size_t i1, const std::size_t i2, const std::string &parameter, const double value)
	Set binary mixture floating point parameter. More...

double	get_binary_interaction_double (const std::size_t i1, const std::size_t i2, const std::string &parameter)
	Get binary mixture double value. More...

void	set_binary_interaction_double (const std::string &CAS1, const std::string &CAS2, const std::string &parameter, const double value)
	Set binary mixture floating point parameter (EXPERT USE ONLY!!!) More...

double	get_binary_interaction_double (const std::string &CAS1, const std::string &CAS2, const std::string &parameter)
	Get binary mixture double value (EXPERT USE ONLY!!!) More...

virtual HelmholtzEOSMixtureBackend *	get_copy (bool generate_SatL_and_SatV=true)=0

void	copy_k (AbstractCubicBackend *donor)

void	copy_all_alpha_functions (AbstractCubicBackend *donor)

void	copy_internals (AbstractCubicBackend &donor)
	Copy the internals from another class into this one (kij, alpha functions, cp0 functions, etc.) More...

void	set_cubic_alpha_C (const size_t i, const std::string &parameter, const double c1, const double c2, const double c3)
	Set the cubic alpha function's constants: More...

void	set_fluid_parameter_double (const size_t i, const std::string &parameter, const double value)
	Set fluid parameter (currently the volume translation parameter for cubic) More...

double	get_fluid_parameter_double (const size_t i, const std::string &parameter)
	Double fluid parameter (currently the volume translation parameter for cubic) More...

Public Member Functions inherited from CoolProp::HelmholtzEOSMixtureBackend
	HelmholtzEOSMixtureBackend ()

	HelmholtzEOSMixtureBackend (const std::vector< CoolPropFluid > &components, bool generate_SatL_and_SatV=true)

	HelmholtzEOSMixtureBackend (const std::vector< std::string > &component_names, bool generate_SatL_and_SatV=true)

void	sync_linked_states (const HelmholtzEOSMixtureBackend *const)

virtual	~HelmholtzEOSMixtureBackend ()

std::string	backend_name (void)

bool	clear ()
	Clear all the cached values. More...

bool	using_mole_fractions ()

bool	using_mass_fractions ()

bool	using_volu_fractions ()

bool	is_pure ()

bool	has_melting_line ()
	Return true if the fluid has a melting line - default is false, but can be re-implemented by derived class. More...

CoolPropDbl	calc_melting_line (int param, int given, CoolPropDbl value)

std::string	fluid_param_string (const std::string &)
	Return a string from the backend for the mixture/fluid. More...

virtual void	set_reference_stateS (const std::string &reference_state)
	brief Set the reference state based on a string representation More...

virtual void	set_reference_stateD (double T, double rhomolar, double hmolar0, double smolar0)
	Set the reference state based on a thermodynamic state point specified by temperature and molar density. More...

void	set_binary_interaction_string (const std::size_t i, const std::size_t j, const std::string &parameter, const std::string &value)
	Set a binary interaction string. More...

void	apply_simple_mixing_rule (std::size_t i, std::size_t j, const std::string &model)
	Apply a simple mixing rule. More...

phases	calc_phase (void)
	Using this backend, calculate the phase. More...

void	calc_specify_phase (phases phase_index)
	Specify the phase - this phase will always be used in calculations. More...

void	calc_unspecify_phase ()
	Unspecify the phase - the phase is no longer imposed, different solvers can do as they like. More...

CoolPropDbl	calc_saturation_ancillary (parameters param, int Q, parameters given, double value)

void	calc_ssat_max (void)

void	calc_hsat_max (void)

CoolPropDbl	calc_GWP20 ()
	Using this backend, calculate the 20-year global warming potential (GWP) More...

CoolPropDbl	calc_GWP500 ()
	Using this backend, calculate the 500-year global warming potential (GWP) More...

CoolPropDbl	calc_GWP100 ()
	Using this backend, calculate the 100-year global warming potential (GWP) More...

CoolPropDbl	calc_ODP ()
	Using this backend, calculate the ozone depletion potential (ODP) More...

CoolPropDbl	calc_first_saturation_deriv (parameters Of1, parameters Wrt1)

CoolPropDbl	calc_first_saturation_deriv (parameters Of1, parameters Wrt1, HelmholtzEOSMixtureBackend &SatL, HelmholtzEOSMixtureBackend &SatV)

CoolPropDbl	calc_second_saturation_deriv (parameters Of1, parameters Wrt1, parameters Wrt2)

CoolPropDbl	calc_first_two_phase_deriv (parameters Of, parameters Wrt, parameters Constant)

CoolPropDbl	calc_second_two_phase_deriv (parameters Of, parameters Wrt1, parameters Constant1, parameters Wrt2, parameters Constant2)

CoolPropDbl	calc_first_two_phase_deriv_splined (parameters Of, parameters Wrt, parameters Constant, CoolPropDbl x_end)

CriticalState	calc_critical_point (double rho0, double T0)

std::vector< CoolProp::CriticalState >	calc_all_critical_points ()
	An overload to make the compiler (clang in this case) happy. More...

virtual void	calc_build_spinodal ()
	Build the spinodal curve. More...

virtual SpinodalData	calc_get_spinodal_data ()
	Get the data from the spinodal curve. More...

void	calc_criticality_contour_values (double &L1star, double &M1star)
	Calculate the values \(\mathcal{L}_1^\) and \(\mathcal{M}_1^\). More...

double	calc_tangent_plane_distance (const double T, const double p, const std::vector< double > &w, const double rhomolar_guess)
	Calculate tangent plane distance for given trial composition w. More...

void	recalculate_singlephase_phase ()
	Calculate the phase once the state is fully calculated but you aren't sure if it is liquid or gas or ... More...

void	calc_change_EOS (const std::size_t i, const std::string &EOS_name)
	Change the equation of state for one component. More...

const CoolProp::SimpleState &	calc_state (const std::string &state)

const std::vector< CoolPropFluid > &	get_components () const

std::vector< CoolPropFluid > &	get_components ()

std::vector< CoolPropDbl > &	get_K ()

std::vector< CoolPropDbl > &	get_lnK ()

HelmholtzEOSMixtureBackend &	get_SatL ()

HelmholtzEOSMixtureBackend &	get_SatV ()

std::vector< CoolPropDbl >	calc_mole_fractions_liquid (void)

std::vector< CoolPropDbl >	calc_mole_fractions_vapor (void)

const std::vector< CoolPropDbl >	calc_mass_fractions (void)

const CoolProp::PhaseEnvelopeData &	calc_phase_envelope_data ()

void	calc_conformal_state (const std::string &reference_fluid, CoolPropDbl &T, CoolPropDbl &rhomolar)
	Calculate the conformal state (unity shape factors starting point if T < 0 and rhomolar < 0) More...

void	resize (std::size_t N)

void	update_with_guesses (CoolProp::input_pairs input_pair, double Value1, double Value2, const GuessesStructure &guesses)
	Update the state using guess values. More...

void	update_internal (HelmholtzEOSMixtureBackend &HEOS)
	Update all the internal variables for a state by copying from another state. More...

void	update_TP_guessrho (CoolPropDbl T, CoolPropDbl p, CoolPropDbl rho_guess)
	Update with TP and a guess for rho. More...

void	update_DmolarT_direct (CoolPropDbl rhomolar, CoolPropDbl T)

void	update_HmolarQ_with_guessT (CoolPropDbl hmolar, CoolPropDbl Q, CoolPropDbl Tguess)

virtual void	set_components (const std::vector< CoolPropFluid > &components, bool generate_SatL_and_SatV=true)
	Set the components of the mixture. More...

void	set_mixture_parameters ()
	Set the mixture parameters - binary pair reducing functions, departure functions, F_ij, etc. More...

void	set_mole_fractions (const std::vector< CoolPropDbl > &mf)
	Set the mole fractions. More...

const std::vector< CoolPropDbl > &	get_mole_fractions ()
	Get the mole fractions of the fluid. More...

std::vector< CoolPropDbl > &	get_mole_fractions_ref ()

std::vector< double > &	get_mole_fractions_doubleref (void)

void	set_mass_fractions (const std::vector< CoolPropDbl > &mass_fractions)
	Set the mass fractions. More...

void	calc_ideal_curve (const std::string &type, std::vector< double > &T, std::vector< double > &p)

CoolPropDbl	calc_molar_mass (void)
	Using this backend, calculate the molar mass in kg/mol. More...

CoolPropDbl	calc_gas_constant (void)
	Using this backend, calculate the universal gas constant \(R_u\) in J/mol/K. More...

CoolPropDbl	calc_acentric_factor (void)
	Using this backend, calculate the acentric factor. More...

CoolPropDbl	calc_Bvirial (void)
	Using this backend, calculate the second virial coefficient. More...

CoolPropDbl	calc_Cvirial (void)
	Using this backend, calculate the third virial coefficient. More...

CoolPropDbl	calc_dBvirial_dT (void)
	Using this backend, calculate the derivative dB/dT. More...

CoolPropDbl	calc_dCvirial_dT (void)
	Using this backend, calculate the derivative dC/dT. More...

CoolPropDbl	calc_pressure (void)
	Using this backend, calculate the pressure in Pa. More...

CoolPropDbl	calc_cvmolar (void)
	Using this backend, calculate the molar constant-volume specific heat in J/mol/K. More...

CoolPropDbl	calc_cpmolar (void)
	Using this backend, calculate the molar constant-pressure specific heat in J/mol/K. More...

CoolPropDbl	calc_gibbsmolar (void)
	Using this backend, calculate the molar Gibbs function in J/mol. More...

CoolPropDbl	calc_gibbsmolar_residual (void)
	Using this backend, calculate the residual molar Gibbs function in J/mol. More...

CoolPropDbl	calc_gibbsmolar_nocache (CoolPropDbl T, CoolPropDbl rhomolar)

CoolPropDbl	calc_helmholtzmolar (void)
	Using this backend, calculate the molar Helmholtz energy in J/mol. More...

CoolPropDbl	calc_cpmolar_idealgas (void)
	Using this backend, calculate the ideal gas molar constant-pressure specific heat in J/mol/K. More...

CoolPropDbl	calc_pressure_nocache (CoolPropDbl T, CoolPropDbl rhomolar)

CoolPropDbl	calc_smolar (void)
	Using this backend, calculate the molar entropy in J/mol/K. More...

CoolPropDbl	calc_smolar_residual (void)
	Using this backend, calculate the residual molar entropy in J/mol/K. More...

CoolPropDbl	calc_smolar_nocache (CoolPropDbl T, CoolPropDbl rhomolar)

CoolPropDbl	calc_hmolar (void)
	Using this backend, calculate the molar enthalpy in J/mol. More...

CoolPropDbl	calc_hmolar_residual (void)
	Using this backend, calculate the residual molar enthalpy in J/mol. More...

CoolPropDbl	calc_hmolar_nocache (CoolPropDbl T, CoolPropDbl rhomolar)

CoolPropDbl	calc_umolar_nocache (CoolPropDbl T, CoolPropDbl rhomolar)

CoolPropDbl	calc_umolar (void)
	Using this backend, calculate the molar internal energy in J/mol. More...

CoolPropDbl	calc_speed_sound (void)
	Using this backend, calculate the speed of sound in m/s. More...

void	calc_excess_properties ()
	Using this backend, calculate and cache the excess properties. More...

CoolPropDbl	calc_phase_identification_parameter (void)
	The phase identification parameter of Venkatarathnam et al., FPE, 2011. More...

CoolPropDbl	calc_fugacity (std::size_t i)
	Using this backend, calculate the fugacity in Pa. More...

virtual CoolPropDbl	calc_fugacity_coefficient (std::size_t i)
	Using this backend, calculate the fugacity coefficient (dimensionless) More...

CoolPropDbl	calc_chemical_potential (std::size_t i)
	Using this backend, calculate the chemical potential in J/mol. More...

CoolPropDbl	calc_flame_hazard (void)
	Using this backend, calculate the flame hazard. More...

CoolPropDbl	calc_health_hazard (void)
	Using this backend, calculate the health hazard. More...

CoolPropDbl	calc_physical_hazard (void)
	Using this backend, calculate the physical hazard. More...

CoolPropDbl	calc_alphar (void)
	Using this backend, calculate the residual Helmholtz energy term \(\alpha^r\) (dimensionless) More...

CoolPropDbl	calc_dalphar_dDelta (void)
	Using this backend, calculate the residual Helmholtz energy term \(\alpha^r_{\delta}\) (dimensionless) More...

CoolPropDbl	calc_dalphar_dTau (void)
	Using this backend, calculate the residual Helmholtz energy term \(\alpha^r_{\tau}\) (dimensionless) More...

CoolPropDbl	calc_d2alphar_dDelta2 (void)
	Using this backend, calculate the residual Helmholtz energy term \(\alpha^r_{\delta\delta}\) (dimensionless) More...

CoolPropDbl	calc_d2alphar_dDelta_dTau (void)
	Using this backend, calculate the residual Helmholtz energy term \(\alpha^r_{\delta\tau}\) (dimensionless) More...

CoolPropDbl	calc_d2alphar_dTau2 (void)
	Using this backend, calculate the residual Helmholtz energy term \(\alpha^r_{\tau\tau}\) (dimensionless) More...

CoolPropDbl	calc_d3alphar_dDelta3 (void)
	Using this backend, calculate the residual Helmholtz energy term \(\alpha^r_{\delta\delta\delta}\) (dimensionless) More...

CoolPropDbl	calc_d3alphar_dDelta2_dTau (void)
	Using this backend, calculate the residual Helmholtz energy term \(\alpha^r_{\delta\delta\tau}\) (dimensionless) More...

CoolPropDbl	calc_d3alphar_dDelta_dTau2 (void)
	Using this backend, calculate the residual Helmholtz energy term \(\alpha^r_{\delta\tau\tau}\) (dimensionless) More...

CoolPropDbl	calc_d3alphar_dTau3 (void)
	Using this backend, calculate the residual Helmholtz energy term \(\alpha^r_{\tau\tau\tau}\) (dimensionless) More...

CoolPropDbl	calc_d4alphar_dDelta4 (void)
	Using this backend, calculate the residual Helmholtz energy term \(\alpha^r_{\delta\delta\delta\delta}\) (dimensionless) More...

CoolPropDbl	calc_d4alphar_dDelta3_dTau (void)
	Using this backend, calculate the residual Helmholtz energy term \(\alpha^r_{\delta\delta\delta\tau}\) (dimensionless) More...

CoolPropDbl	calc_d4alphar_dDelta2_dTau2 (void)
	Using this backend, calculate the residual Helmholtz energy term \(\alpha^r_{\delta\delta\tau\tau}\) (dimensionless) More...

CoolPropDbl	calc_d4alphar_dDelta_dTau3 (void)
	Using this backend, calculate the residual Helmholtz energy term \(\alpha^r_{\delta\tau\tau\tau}\) (dimensionless) More...

CoolPropDbl	calc_d4alphar_dTau4 (void)
	Using this backend, calculate the residual Helmholtz energy term \(\alpha^r_{\tau\tau\tau\tau}\) (dimensionless) More...

CoolPropDbl	calc_alpha0 (void)
	Using this backend, calculate the ideal-gas Helmholtz energy term \(\alpha^0\) (dimensionless) More...

CoolPropDbl	calc_dalpha0_dDelta (void)
	Using this backend, calculate the ideal-gas Helmholtz energy term \(\alpha^0_{\delta}\) (dimensionless) More...

CoolPropDbl	calc_dalpha0_dTau (void)
	Using this backend, calculate the ideal-gas Helmholtz energy term \(\alpha^0_{\tau}\) (dimensionless) More...

CoolPropDbl	calc_d2alpha0_dDelta2 (void)
	Using this backend, calculate the ideal-gas Helmholtz energy term \(\alpha^0_{\delta\tau}\) (dimensionless) More...

CoolPropDbl	calc_d2alpha0_dDelta_dTau (void)
	Using this backend, calculate the ideal-gas Helmholtz energy term \(\alpha^0_{\delta\delta}\) (dimensionless) More...

CoolPropDbl	calc_d2alpha0_dTau2 (void)
	Using this backend, calculate the ideal-gas Helmholtz energy term \(\alpha^0_{\tau\tau}\) (dimensionless) More...

CoolPropDbl	calc_d3alpha0_dDelta3 (void)
	Using this backend, calculate the ideal-gas Helmholtz energy term \(\alpha^0_{\delta\delta\delta}\) (dimensionless) More...

CoolPropDbl	calc_d3alpha0_dDelta2_dTau (void)
	Using this backend, calculate the ideal-gas Helmholtz energy term \(\alpha^0_{\delta\delta\tau}\) (dimensionless) More...

CoolPropDbl	calc_d3alpha0_dDelta_dTau2 (void)
	Using this backend, calculate the ideal-gas Helmholtz energy term \(\alpha^0_{\delta\tau\tau}\) (dimensionless) More...

CoolPropDbl	calc_d3alpha0_dTau3 (void)
	Using this backend, calculate the ideal-gas Helmholtz energy term \(\alpha^0_{\tau\tau\tau}\) (dimensionless) More...

CoolPropDbl	calc_surface_tension (void)
	Using this backend, calculate the surface tension in N/m. More...

CoolPropDbl	calc_viscosity (void)
	Using this backend, calculate the viscosity in Pa-s. More...

CoolPropDbl	calc_viscosity_dilute (void)

CoolPropDbl	calc_viscosity_background (void)

CoolPropDbl	calc_viscosity_background (CoolPropDbl eta_dilute, CoolPropDbl &initial_density, CoolPropDbl &residual)

CoolPropDbl	calc_conductivity (void)
	Using this backend, calculate the thermal conductivity in W/m/K. More...

CoolPropDbl	calc_conductivity_background (void)

void	calc_viscosity_contributions (CoolPropDbl &dilute, CoolPropDbl &initial_density, CoolPropDbl &residual, CoolPropDbl &critical)
	Calculate each of the contributions to the viscosity. More...

void	calc_conductivity_contributions (CoolPropDbl &dilute, CoolPropDbl &initial_density, CoolPropDbl &residual, CoolPropDbl &critical)
	Calculate each of the contributions to the conductivity. More...

CoolPropDbl	calc_saturated_liquid_keyed_output (parameters key)

CoolPropDbl	calc_saturated_vapor_keyed_output (parameters key)

CoolPropDbl	calc_Tmin (void)
	Using this backend, calculate the minimum temperature in K. More...

CoolPropDbl	calc_Tmax (void)
	Using this backend, calculate the maximum temperature in K. More...

CoolPropDbl	calc_pmax (void)
	Using this backend, calculate the maximum pressure in Pa. More...

CoolPropDbl	calc_Ttriple (void)
	Using this backend, get the triple point temperature in K. More...

CoolPropDbl	calc_p_triple (void)
	Using this backend, get the triple point pressure in Pa. More...

CoolPropDbl	calc_pmax_sat (void)

CoolPropDbl	calc_Tmax_sat (void)

void	calc_Tmin_sat (CoolPropDbl &Tmin_satL, CoolPropDbl &Tmin_satV)

void	calc_pmin_sat (CoolPropDbl &pmin_satL, CoolPropDbl &pmin_satV)

CoolPropDbl	calc_T_reducing (void)
	Using this backend, get the reducing point temperature in K. More...

CoolPropDbl	calc_rhomolar_reducing (void)
	Using this backend, get the reducing point molar density in mol/m^3. More...

CoolPropDbl	calc_p_reducing (void)
	Using this backend, get the reducing point pressure in Pa. More...

CoolPropDbl	calc_PIP (void)
	Using this backend, calculate the phase identification parameter (PIP) More...

std::string	calc_name (void)
	Using this backend, get the name of the fluid. More...

std::vector< std::string >	calc_fluid_names (void)
	Using this backend, get a vector of fluid names. More...

void	calc_all_alphar_deriv_cache (const std::vector< CoolPropDbl > &mole_fractions, const CoolPropDbl &tau, const CoolPropDbl &delta)

CoolPropDbl	calc_alpha0_deriv_nocache (const int nTau, const int nDelta, const std::vector< CoolPropDbl > &mole_fractions, const CoolPropDbl &tau, const CoolPropDbl &delta, const CoolPropDbl &Tr, const CoolPropDbl &rhor)
	Take derivatives of the ideal-gas part of the Helmholtz energy, don't use any cached values, or store any cached values. More...

virtual void	calc_reducing_state (void)

const CoolProp::SimpleState &	get_reducing_state ()

void	update_states ()
	Update the states after having changed the reference state for enthalpy and entropy. More...

CoolPropDbl	calc_compressibility_factor (void)
	Using this backend, calculate the compressibility factor Z \( Z = p/(\rho R T) \). More...

void	calc_phase_envelope (const std::string &type)
	Using this backend, construct the phase envelope, the variable type describes the type of phase envelope to be built. More...

CoolPropDbl	SRK_covolume ()

void	T_phase_determination_pure_or_pseudopure (int other, CoolPropDbl value)

void	p_phase_determination_pure_or_pseudopure (int other, CoolPropDbl value, bool &saturation_called)

void	DmolarP_phase_determination ()

virtual StationaryPointReturnFlag	solver_dpdrho0_Tp (CoolPropDbl T, CoolPropDbl p, CoolPropDbl rhomax, CoolPropDbl &light, CoolPropDbl &heavy)

Public Member Functions inherited from CoolProp::AbstractState
	AbstractState ()

virtual	~AbstractState ()

void	set_T (CoolPropDbl T)
	Set the internal variable T without a flash call (expert use only!) More...

std::vector< CoolPropDbl >	mole_fractions_liquid (void)
	Get the mole fractions of the equilibrium liquid phase. More...

std::vector< double >	mole_fractions_liquid_double (void)
	Get the mole fractions of the equilibrium liquid phase (but as a double for use in SWIG wrapper) More...

std::vector< CoolPropDbl >	mole_fractions_vapor (void)
	Get the mole fractions of the equilibrium vapor phase. More...

std::vector< double >	mole_fractions_vapor_double (void)
	Get the mole fractions of the equilibrium vapor phase (but as a double for use in SWIG wrapper) More...

virtual const std::vector< CoolPropDbl >	get_mass_fractions (void)
	Get the mass fractions of the fluid. More...

virtual bool	available_in_high_level (void)

std::vector< std::string >	fluid_names (void)
	Return a vector of strings of the fluid names that are in use. More...

virtual void	set_binary_interaction_string (const std::string &CAS1, const std::string &CAS2, const std::string &parameter, const std::string &value)
	Set binary mixture string parameter (EXPERT USE ONLY!!!) More...

virtual std::string	get_binary_interaction_string (const std::string &CAS1, const std::string &CAS2, const std::string &parameter)
	Get binary mixture string value (EXPERT USE ONLY!!!) More...

virtual bool	clear_comp_change ()
	When the composition changes, clear all cached values that are only dependent on composition, but not the thermodynamic state. More...

const CoolProp::SimpleState &	get_state (const std::string &state)
	Get a desired state point - backend dependent. More...

double	Tmin (void)
	Get the minimum temperature in K. More...

double	Tmax (void)
	Get the maximum temperature in K. More...

double	pmax (void)
	Get the maximum pressure in Pa. More...

double	Ttriple (void)
	Get the triple point temperature in K. More...

phases	phase (void)
	Get the phase of the state. More...

void	specify_phase (phases phase)
	Specify the phase for all further calculations with this state class. More...

void	unspecify_phase (void)
	Unspecify the phase and go back to calculating it based on the inputs. More...

double	T_critical (void)
	Return the critical temperature in K. More...

double	p_critical (void)
	Return the critical pressure in Pa. More...

double	rhomolar_critical (void)
	Return the critical molar density in mol/m^3. More...

double	rhomass_critical (void)
	Return the critical mass density in kg/m^3. More...

std::vector< CriticalState >	all_critical_points (void)
	Return the vector of critical points, including points that are unstable or correspond to negative pressure. More...

void	build_spinodal ()
	Construct the spinodal curve for the mixture (or pure fluid) More...

SpinodalData	get_spinodal_data ()
	Get the data from the spinodal curve constructed in the call to build_spinodal() More...

void	criticality_contour_values (double &L1star, double &M1star)
	Calculate the criticality contour values \(\mathcal{L}_1^\) and \(\mathcal{M}_1^\). More...

double	tangent_plane_distance (const double T, const double p, const std::vector< double > &w, const double rhomolar_guess=-1)

double	T_reducing (void)
	Return the reducing point temperature in K. More...

double	rhomolar_reducing (void)
	Return the molar density at the reducing point in mol/m^3. More...

double	rhomass_reducing (void)
	Return the mass density at the reducing point in kg/m^3. More...

double	p_triple (void)
	Return the triple point pressure in Pa. More...

std::string	name ()
	Return the name - backend dependent. More...

std::string	description ()
	Return the description - backend dependent. More...

double	dipole_moment ()
	Return the dipole moment in C-m (1 D = 3.33564e-30 C-m) More...

double	keyed_output (parameters key)
	Retrieve a value by key. More...

double	trivial_keyed_output (parameters key)
	A trivial keyed output like molar mass that does not depend on the state. More...

double	saturated_liquid_keyed_output (parameters key)
	Get an output from the saturated liquid state by key. More...

double	saturated_vapor_keyed_output (parameters key)
	Get an output from the saturated vapor state by key. More...

double	T (void)
	Return the temperature in K. More...

double	rhomolar (void)
	Return the molar density in mol/m^3. More...

double	rhomass (void)
	Return the mass density in kg/m^3. More...

double	p (void)
	Return the pressure in Pa. More...

double	Q (void)
	Return the vapor quality (mol/mol); Q = 0 for saturated liquid. More...

double	tau (void)
	Return the reciprocal of the reduced temperature ( \(\tau = T_c/T\)) More...

double	delta (void)
	Return the reduced density ( \(\delta = \rho/\rho_c\)) More...

double	molar_mass (void)
	Return the molar mass in kg/mol. More...

double	acentric_factor (void)
	Return the acentric factor. More...

double	gas_constant (void)
	Return the mole-fraction weighted gas constant in J/mol/K. More...

double	Bvirial (void)
	Return the B virial coefficient. More...

double	dBvirial_dT (void)
	Return the derivative of the B virial coefficient with respect to temperature. More...

double	Cvirial (void)
	Return the C virial coefficient. More...

double	dCvirial_dT (void)
	Return the derivative of the C virial coefficient with respect to temperature. More...

double	compressibility_factor (void)
	Return the compressibility factor \( Z = p/(rho R T) \). More...

double	hmolar (void)
	Return the molar enthalpy in J/mol. More...

double	hmolar_residual (void)
	Return the residual molar enthalpy in J/mol. More...

double	hmass (void)
	Return the mass enthalpy in J/kg. More...

double	hmolar_excess (void)
	Return the excess molar enthalpy in J/mol. More...

double	hmass_excess (void)
	Return the excess mass enthalpy in J/kg. More...

double	smolar (void)
	Return the molar entropy in J/mol/K. More...

double	smolar_residual (void)
	Return the residual molar entropy (as a function of temperature and density) in J/mol/K. More...

double	neff (void)
	Return the effective hardness of interaction. More...

double	smass (void)
	Return the molar entropy in J/kg/K. More...

double	smolar_excess (void)
	Return the molar entropy in J/mol/K. More...

double	smass_excess (void)
	Return the molar entropy in J/kg/K. More...

double	umolar (void)
	Return the molar internal energy in J/mol. More...

double	umass (void)
	Return the mass internal energy in J/kg. More...

double	umolar_excess (void)
	Return the excess internal energy in J/mol. More...

double	umass_excess (void)
	Return the excess internal energy in J/kg. More...

double	cpmolar (void)
	Return the molar constant pressure specific heat in J/mol/K. More...

double	cpmass (void)
	Return the mass constant pressure specific heat in J/kg/K. More...

double	cp0molar (void)
	Return the molar constant pressure specific heat for ideal gas part only in J/mol/K. More...

double	cp0mass (void)
	Return the mass constant pressure specific heat for ideal gas part only in J/kg/K. More...

double	cvmolar (void)
	Return the molar constant volume specific heat in J/mol/K. More...

double	cvmass (void)
	Return the mass constant volume specific heat in J/kg/K. More...

double	gibbsmolar (void)
	Return the Gibbs energy in J/mol. More...

double	gibbsmolar_residual (void)
	Return the residual Gibbs energy in J/mol. More...

double	gibbsmass (void)
	Return the Gibbs energy in J/kg. More...

double	gibbsmolar_excess (void)
	Return the excess Gibbs energy in J/mol. More...

double	gibbsmass_excess (void)
	Return the excess Gibbs energy in J/kg. More...

double	helmholtzmolar (void)
	Return the Helmholtz energy in J/mol. More...

double	helmholtzmass (void)
	Return the Helmholtz energy in J/kg. More...

double	helmholtzmolar_excess (void)
	Return the excess Helmholtz energy in J/mol. More...

double	helmholtzmass_excess (void)
	Return the excess Helmholtz energy in J/kg. More...

double	volumemolar_excess (void)
	Return the excess volume in m^3/mol. More...

double	volumemass_excess (void)
	Return the excess volume in m^3/kg. More...

double	speed_sound (void)
	Return the speed of sound in m/s. More...

double	isothermal_compressibility (void)
	Return the isothermal compressibility \( \kappa = -\frac{1}{v}\left.\frac{\partial v}{\partial p}\right\|_T=\frac{1}{\rho}\left.\frac{\partial \rho}{\partial p}\right\|_T\) in 1/Pa. More...

double	isobaric_expansion_coefficient (void)
	Return the isobaric expansion coefficient \( \beta = \frac{1}{v}\left.\frac{\partial v}{\partial T}\right\|_p = -\frac{1}{\rho}\left.\frac{\partial \rho}{\partial T}\right\|_p\) in 1/K. More...

double	isentropic_expansion_coefficient (void)
	Return the isentropic expansion coefficient \( \kappa_s = -\frac{c_p}{c_v}\frac{v}{p}\left.\frac{\partial p}{\partial v}\right\|_T = \frac{\rho}{p}\left.\frac{\partial p}{\partial \rho}\right\|_s\). More...

double	fugacity_coefficient (std::size_t i)
	Return the fugacity coefficient of the i-th component of the mixture. More...

std::vector< double >	fugacity_coefficients ()
	Return a vector of the fugacity coefficients for all components in the mixture. More...

double	fugacity (std::size_t i)
	Return the fugacity of the i-th component of the mixture. More...

double	chemical_potential (std::size_t i)
	Return the chemical potential of the i-th component of the mixture. More...

double	fundamental_derivative_of_gas_dynamics (void)
	Return the fundamental derivative of gas dynamics \( \Gamma \). More...

double	PIP ()
	Return the phase identification parameter (PIP) of G. Venkatarathnam and L.R. Oellrich, "Identification of the phase of a fluid using partial derivatives of pressure, volume, and temperature without reference to saturation properties: Applications in phase equilibria calculations". More...

void	true_critical_point (double &T, double &rho)
	Calculate the "true" critical point for pure fluids where dpdrho\|T and d2p/drho2\|T are equal to zero. More...

void	ideal_curve (const std::string &type, std::vector< double > &T, std::vector< double > &p)
	Calculate an ideal curve for a pure fluid. More...

CoolPropDbl	first_partial_deriv (parameters Of, parameters Wrt, parameters Constant)
	The first partial derivative in homogeneous phases. More...

CoolPropDbl	second_partial_deriv (parameters Of1, parameters Wrt1, parameters Constant1, parameters Wrt2, parameters Constant2)
	The second partial derivative in homogeneous phases. More...

CoolPropDbl	first_saturation_deriv (parameters Of1, parameters Wrt1)
	The first partial derivative along the saturation curve. More...

CoolPropDbl	second_saturation_deriv (parameters Of1, parameters Wrt1, parameters Wrt2)
	The second partial derivative along the saturation curve. More...

double	first_two_phase_deriv (parameters Of, parameters Wrt, parameters Constant)
	Calculate the first "two-phase" derivative as described by Thorade and Sadaat, EAS, 2013. More...

double	second_two_phase_deriv (parameters Of, parameters Wrt1, parameters Constant1, parameters Wrt2, parameters Constant2)
	Calculate the second "two-phase" derivative as described by Thorade and Sadaat, EAS, 2013. More...

double	first_two_phase_deriv_splined (parameters Of, parameters Wrt, parameters Constant, double x_end)
	Calculate the first "two-phase" derivative as described by Thorade and Sadaat, EAS, 2013. More...

void	build_phase_envelope (const std::string &type="")
	Construct the phase envelope for a mixture. More...

const CoolProp::PhaseEnvelopeData &	get_phase_envelope_data ()
	After having calculated the phase envelope, return the phase envelope data. More...

double	melting_line (int param, int given, double value)

double	saturation_ancillary (parameters param, int Q, parameters given, double value)

double	viscosity (void)
	Return the viscosity in Pa-s. More...

void	viscosity_contributions (CoolPropDbl &dilute, CoolPropDbl &initial_density, CoolPropDbl &residual, CoolPropDbl &critical)
	Return the viscosity contributions, each in Pa-s. More...

double	conductivity (void)
	Return the thermal conductivity in W/m/K. More...

void	conductivity_contributions (CoolPropDbl &dilute, CoolPropDbl &initial_density, CoolPropDbl &residual, CoolPropDbl &critical)
	Return the thermal conductivity contributions, each in W/m/K. More...

double	surface_tension (void)
	Return the surface tension in N/m. More...

double	Prandtl (void)
	Return the Prandtl number (dimensionless) More...

void	conformal_state (const std::string &reference_fluid, CoolPropDbl &T, CoolPropDbl &rhomolar)
	Find the conformal state needed for ECS. More...

void	change_EOS (const std::size_t i, const std::string &EOS_name)
	Change the equation of state for a given component to a specified EOS. More...

CoolPropDbl	alpha0 (void)
	Return the term \( \alpha^0 \). More...

CoolPropDbl	dalpha0_dDelta (void)
	Return the term \( \alpha^0_{\delta} \). More...

CoolPropDbl	dalpha0_dTau (void)
	Return the term \( \alpha^0_{\tau} \). More...

CoolPropDbl	d2alpha0_dDelta2 (void)
	Return the term \( \alpha^0_{\delta\delta} \). More...

CoolPropDbl	d2alpha0_dDelta_dTau (void)
	Return the term \( \alpha^0_{\delta\tau} \). More...

CoolPropDbl	d2alpha0_dTau2 (void)
	Return the term \( \alpha^0_{\tau\tau} \). More...

CoolPropDbl	d3alpha0_dTau3 (void)
	Return the term \( \alpha^0_{\tau\tau\tau} \). More...

CoolPropDbl	d3alpha0_dDelta_dTau2 (void)
	Return the term \( \alpha^0_{\delta\tau\tau} \). More...

CoolPropDbl	d3alpha0_dDelta2_dTau (void)
	Return the term \( \alpha^0_{\delta\delta\tau} \). More...

CoolPropDbl	d3alpha0_dDelta3 (void)
	Return the term \( \alpha^0_{\delta\delta\delta} \). More...

CoolPropDbl	alphar (void)
	Return the term \( \alpha^r \). More...

CoolPropDbl	dalphar_dDelta (void)
	Return the term \( \alpha^r_{\delta} \). More...

CoolPropDbl	dalphar_dTau (void)
	Return the term \( \alpha^r_{\tau} \). More...

CoolPropDbl	d2alphar_dDelta2 (void)
	Return the term \( \alpha^r_{\delta\delta} \). More...

CoolPropDbl	d2alphar_dDelta_dTau (void)
	Return the term \( \alpha^r_{\delta\tau} \). More...

CoolPropDbl	d2alphar_dTau2 (void)
	Return the term \( \alpha^r_{\tau\tau} \). More...

CoolPropDbl	d3alphar_dDelta3 (void)
	Return the term \( \alpha^r_{\delta\delta\delta} \). More...

CoolPropDbl	d3alphar_dDelta2_dTau (void)
	Return the term \( \alpha^r_{\delta\delta\tau} \). More...

CoolPropDbl	d3alphar_dDelta_dTau2 (void)
	Return the term \( \alpha^r_{\delta\tau\tau} \). More...

CoolPropDbl	d3alphar_dTau3 (void)
	Return the term \( \alpha^r_{\tau\tau\tau} \). More...

CoolPropDbl	d4alphar_dDelta4 (void)
	Return the term \( \alpha^r_{\delta\delta\delta\delta} \). More...

CoolPropDbl	d4alphar_dDelta3_dTau (void)
	Return the term \( \alpha^r_{\delta\delta\delta\tau} \). More...

CoolPropDbl	d4alphar_dDelta2_dTau2 (void)
	Return the term \( \alpha^r_{\delta\delta\tau\tau} \). More...

CoolPropDbl	d4alphar_dDelta_dTau3 (void)
	Return the term \( \alpha^r_{\delta\tau\tau\tau} \). More...

CoolPropDbl	d4alphar_dTau4 (void)
	Return the term \( \alpha^r_{\tau\tau\tau\tau} \). More...

Protected Attributes
shared_ptr< AbstractCubic >	cubic

std::vector< CubicLibrary::CubicsValues >	components
	The components that are in use. More...

Protected Attributes inherited from CoolProp::HelmholtzEOSMixtureBackend
std::vector< shared_ptr< HelmholtzEOSMixtureBackend > >	linked_states
	States that are linked to this one, and should be updated (BIP, reference state, etc.) More...

shared_ptr< HelmholtzEOSMixtureBackend >	transient_pure_state
	A temporary state used for calculations of pure fluid properties. More...

shared_ptr< HelmholtzEOSMixtureBackend >	TPD_state
	A temporary state used for calculations of the tangent-plane-distance. More...

shared_ptr< HelmholtzEOSMixtureBackend >	critical_state

std::vector< CoolPropFluid >	components
	The components that are in use. More...

bool	is_pure_or_pseudopure
	A flag for whether the substance is a pure or pseudo-pure fluid (true) or a mixture (false) More...

MoleFractions	mole_fractions
	The bulk mole fractions of the mixture. More...

std::vector< CoolPropDbl >	K
	The K factors for the components. More...

std::vector< CoolPropDbl >	lnK
	The natural logarithms of the K factors of the components. More...

SimpleState	_crit

std::size_t	N
	Number of components. More...

Protected Attributes inherited from CoolProp::AbstractState
long	_fluid_type
	Some administrative variables. More...

phases	_phase
	The key for the phase from CoolProp::phases enum. More...

phases	imposed_phase_index
	If the phase is imposed, the imposed phase index. More...

SimpleState	_critical
	Two important points. More...

SimpleState	_reducing

CachedElement	_molar_mass
	Molar mass [mol/kg]. More...

CachedElement	_gas_constant
	Universal gas constant [J/mol/K]. More...

double	_rhomolar
	Bulk values. More...

double	_T

double	_p

double	_Q

double	_R

CachedElement	_tau

CachedElement	_delta

CachedElement	_viscosity
	Transport properties. More...

CachedElement	_conductivity

CachedElement	_surface_tension

CachedElement	_hmolar

CachedElement	_smolar

CachedElement	_umolar

CachedElement	_logp

CachedElement	_logrhomolar

CachedElement	_cpmolar

CachedElement	_cp0molar

CachedElement	_cvmolar

CachedElement	_speed_sound

CachedElement	_gibbsmolar

CachedElement	_helmholtzmolar

CachedElement	_hmolar_residual
	Residual properties. More...

CachedElement	_smolar_residual

CachedElement	_gibbsmolar_residual

CachedElement	_hmolar_excess
	Excess properties. More...

CachedElement	_smolar_excess

CachedElement	_gibbsmolar_excess

CachedElement	_umolar_excess

CachedElement	_volumemolar_excess

CachedElement	_helmholtzmolar_excess

CachedElement	_rhoLanc
	Ancillary values. More...

CachedElement	_rhoVanc

CachedElement	_pLanc

CachedElement	_pVanc

CachedElement	_TLanc

CachedElement	_TVanc

CachedElement	_fugacity_coefficient

CachedElement	_rho_spline
	Smoothing values. More...

CachedElement	_drho_spline_dh__constp

CachedElement	_drho_spline_dp__consth

CachedElement	_alpha0
	Cached low-level elements for in-place calculation of other properties. More...

CachedElement	_dalpha0_dTau

CachedElement	_dalpha0_dDelta

CachedElement	_d2alpha0_dTau2

CachedElement	_d2alpha0_dDelta_dTau

CachedElement	_d2alpha0_dDelta2

CachedElement	_d3alpha0_dTau3

CachedElement	_d3alpha0_dDelta_dTau2

CachedElement	_d3alpha0_dDelta2_dTau

CachedElement	_d3alpha0_dDelta3

CachedElement	_alphar

CachedElement	_dalphar_dTau

CachedElement	_dalphar_dDelta

CachedElement	_d2alphar_dTau2

CachedElement	_d2alphar_dDelta_dTau

CachedElement	_d2alphar_dDelta2

CachedElement	_d3alphar_dTau3

CachedElement	_d3alphar_dDelta_dTau2

CachedElement	_d3alphar_dDelta2_dTau

CachedElement	_d3alphar_dDelta3

CachedElement	_d4alphar_dTau4

CachedElement	_d4alphar_dDelta_dTau3

CachedElement	_d4alphar_dDelta2_dTau2

CachedElement	_d4alphar_dDelta3_dTau

CachedElement	_d4alphar_dDelta4

CachedElement	_dalphar_dDelta_lim

CachedElement	_d2alphar_dDelta2_lim

CachedElement	_d2alphar_dDelta_dTau_lim

CachedElement	_d3alphar_dDelta2_dTau_lim

CachedElement	_rhoLmolar
	Two-Phase variables. More...

CachedElement	_rhoVmolar

Additional Inherited Members
Public Types inherited from CoolProp::HelmholtzEOSMixtureBackend
enum	StationaryPointReturnFlag { ZERO_STATIONARY_POINTS , ONE_STATIONARY_POINT_FOUND , TWO_STATIONARY_POINTS_FOUND }

Static Public Member Functions inherited from CoolProp::AbstractState
static AbstractState *	factory (const std::string &backend, const std::string &fluid_names)
	A factory function to return a pointer to a new-allocated instance of one of the backends. More...

static AbstractState *	factory (const std::string &backend, const std::vector< std::string > &fluid_names)
	A factory function to return a pointer to a new-allocated instance of one of the backends. More...

Public Attributes inherited from CoolProp::HelmholtzEOSMixtureBackend
shared_ptr< ReducingFunction >	Reducing

shared_ptr< ResidualHelmholtz >	residual_helmholtz

PhaseEnvelopeData	PhaseEnvelope

SimpleState	hsat_max

SsatSimpleState	ssat_max

SpinodalData	spinodal_values

shared_ptr< HelmholtzEOSMixtureBackend >	SatL

shared_ptr< HelmholtzEOSMixtureBackend >	SatV

Protected Member Functions inherited from CoolProp::HelmholtzEOSMixtureBackend
void	pre_update (CoolProp::input_pairs &input_pair, CoolPropDbl &value1, CoolPropDbl &value2)

void	post_update (bool optional_checks=true)

virtual void	add_TPD_state ()
	Update the state class used to calculate the tangent-plane-distance. More...

virtual void	add_critical_state ()
	Update the state class used to calculate the critical point(s) More...

virtual void	add_transient_pure_state ()
	Update the state class used to calculate the critical point(s) More...

std::vector< CoolProp::CriticalState >	_calc_all_critical_points (bool find_critical_points=true)
	This overload is protected because it doesn't follow the base class definition, since this function is needed for constructing spinodals. More...

Protected Member Functions inherited from CoolProp::AbstractState
bool	isSupercriticalPhase (void)

bool	isHomogeneousPhase (void)

bool	isTwoPhase (void)

virtual CoolPropDbl	calc_neff (void)
	Using this backend, calculate effective hardness of interaction. More...

virtual CoolPropDbl	calc_isothermal_compressibility (void)
	Using this backend, calculate the isothermal compressibility \( \kappa = -\frac{1}{v}\left.\frac{\partial v}{\partial p}\right\|_T=\frac{1}{\rho}\left.\frac{\partial \rho}{\partial p}\right\|_T\) in 1/Pa. More...

virtual CoolPropDbl	calc_isobaric_expansion_coefficient (void)
	Using this backend, calculate the isobaric expansion coefficient \( \beta = \frac{1}{v}\left.\frac{\partial v}{\partial T}\right\|_p = -\frac{1}{\rho}\left.\frac{\partial \rho}{\partial T}\right\|_p\) in 1/K. More...

virtual CoolPropDbl	calc_isentropic_expansion_coefficient (void)
	Using this backend, calculate the isentropic expansion coefficient \( \kappa_s = -\frac{c_p}{c_v}\frac{v}{p}\left.\frac{\partial p}{\partial v}\right\|_T = \frac{\rho}{p}\left.\frac{\partial p}{\partial \rho}\right\|_s\). More...

virtual std::vector< CoolPropDbl >	calc_fugacity_coefficients ()
	Using this backend, calculate the fugacity in Pa. More...

virtual CoolPropDbl	calc_dipole_moment (void)
	Using this backend, calculate the dipole moment in C-m (1 D = 3.33564e-30 C-m) More...

virtual CoolPropDbl	calc_first_partial_deriv (parameters Of, parameters Wrt, parameters Constant)
	Calculate the first partial derivative for the desired derivative. More...

virtual CoolPropDbl	calc_second_partial_deriv (parameters Of1, parameters Wrt1, parameters Constant1, parameters Wrt2, parameters Constant2)
	Calculate the second partial derivative using the given backend. More...

virtual std::string	calc_description (void)
	Using this backend, get the description of the fluid. More...

virtual CoolPropDbl	calc_rhomass_critical (void)
	Using this backend, get the critical point mass density in kg/m^3 - Added for IF97Backend which is mass based. More...

virtual CoolPropDbl	calc_rhomass (void)

virtual CoolPropDbl	calc_hmass (void)

virtual CoolPropDbl	calc_hmass_excess (void)

virtual CoolPropDbl	calc_smass (void)

virtual CoolPropDbl	calc_smass_excess (void)

virtual CoolPropDbl	calc_cpmass (void)

virtual CoolPropDbl	calc_cp0mass (void)

virtual CoolPropDbl	calc_cvmass (void)

virtual CoolPropDbl	calc_umass (void)

virtual CoolPropDbl	calc_umass_excess (void)

virtual CoolPropDbl	calc_gibbsmass (void)

virtual CoolPropDbl	calc_gibbsmass_excess (void)

virtual CoolPropDbl	calc_helmholtzmass (void)

virtual CoolPropDbl	calc_helmholtzmass_excess (void)

virtual CoolPropDbl	calc_volumemass_excess (void)

virtual CoolPropDbl	calc_fraction_min (void)
	Get the minimum fraction (mole, mass, volume) for incompressible fluid. More...

virtual CoolPropDbl	calc_fraction_max (void)
	Get the maximum fraction (mole, mass, volume) for incompressible fluid. More...

virtual CoolPropDbl	calc_T_freeze (void)

virtual CoolPropDbl	calc_T (void)
	Using this backend, get the temperature. More...

virtual CoolPropDbl	calc_rhomolar (void)
	Using this backend, get the molar density in mol/m^3. More...

virtual void	calc_true_critical_point (double &T, double &rho)
	Using this backend, return true critical point where dp/drho\|T = 0 and d2p/drho^2\|T = 0. More...

virtual void	mass_to_molar_inputs (CoolProp::input_pairs &input_pair, CoolPropDbl &value1, CoolPropDbl &value2)
	Convert mass-based input pair to molar-based input pair; If molar-based, do nothing. More...

Static Protected Member Functions inherited from CoolProp::HelmholtzEOSMixtureBackend
static void	set_fluid_enthalpy_entropy_offset (CoolPropFluid &component, double delta_a1, double delta_a2, const std::string &ref)

Member Function Documentation

◆ calc_acentric_factor()

CoolPropDbl CoolProp::AbstractCubicBackend::calc_acentric_factor ( void )

inlinevirtual

Using this backend, calculate the acentric factor.

Reimplemented from CoolProp::AbstractState.

Definition at line 134 of file CubicBackend.h.

◆ calc_alphar_deriv_nocache()

CoolPropDbl CoolProp::AbstractCubicBackend::calc_alphar_deriv_nocache	(	const int	nTau,
		const int	nDelta,
		const std::vector< CoolPropDbl > &	mole_fractions,
		const CoolPropDbl &	tau,
		const CoolPropDbl &	delta
	)

virtual

Reimplemented from CoolProp::HelmholtzEOSMixtureBackend.

Definition at line 210 of file CubicBackend.cpp.

◆ calc_fluid_names()

std::vector< std::string > CoolProp::AbstractCubicBackend::calc_fluid_names ( void )

virtual

Using this backend, get a vector of fluid names.

Reimplemented from CoolProp::AbstractState.

Reimplemented in CoolProp::VTPRBackend.

Definition at line 127 of file CubicBackend.cpp.

◆ calc_gas_constant()

CoolPropDbl CoolProp::AbstractCubicBackend::calc_gas_constant ( void )

inlinevirtual

Calculate the gas constant in J/mol/K.

Reimplemented from CoolProp::AbstractState.

Definition at line 102 of file CubicBackend.h.

◆ calc_molar_mass()

CoolPropDbl CoolProp::AbstractCubicBackend::calc_molar_mass ( void )

virtual

Using this backend, calculate the molar mass in kg/mol.

Reimplemented from CoolProp::AbstractState.

Reimplemented in CoolProp::VTPRBackend.

Definition at line 579 of file CubicBackend.cpp.

◆ calc_p_critical()

CoolPropDbl CoolProp::AbstractCubicBackend::calc_p_critical ( void )

inlinevirtual

Using this backend, get the critical point pressure in Pa.

Reimplemented from CoolProp::HelmholtzEOSMixtureBackend.

Definition at line 127 of file CubicBackend.h.

◆ calc_pressure_nocache()

CoolPropDbl CoolProp::AbstractCubicBackend::calc_pressure_nocache	(	CoolPropDbl	T,
		CoolPropDbl	rhomolar
	)

Calculate the pressure in most computationally efficient manner.

Definition at line 192 of file CubicBackend.cpp.

◆ calc_reciprocal_reduced_temperature()

CoolPropDbl CoolProp::AbstractCubicBackend::calc_reciprocal_reduced_temperature ( void )

inlinevirtual

Using this backend, calculate the reciprocal reduced temperature (Tc/T)

Reimplemented from CoolProp::AbstractState.

Definition at line 115 of file CubicBackend.h.

◆ calc_reduced_density()

CoolPropDbl CoolProp::AbstractCubicBackend::calc_reduced_density ( void )

inlinevirtual

Using this backend, calculate the reduced density (rho/rhoc)

Reimplemented from CoolProp::AbstractState.

Definition at line 112 of file CubicBackend.h.

◆ calc_reducing_state_nocache()

SimpleState CoolProp::AbstractCubicBackend::calc_reducing_state_nocache ( const std::vector< CoolPropDbl > & mole_fractions )

inlinevirtual

Get the reducing state to be used.

Reimplemented from CoolProp::HelmholtzEOSMixtureBackend.

Definition at line 106 of file CubicBackend.h.

◆ calc_rhomolar_critical()

CoolPropDbl CoolProp::AbstractCubicBackend::calc_rhomolar_critical ( void )

inlinevirtual

Using this backend, get the critical point molar density in mol/m^3.

Reimplemented from CoolProp::HelmholtzEOSMixtureBackend.

Definition at line 141 of file CubicBackend.h.

◆ calc_T_critical()

CoolPropDbl CoolProp::AbstractCubicBackend::calc_T_critical ( void )

inlinevirtual

Using this backend, get the critical point temperature in K.

Reimplemented from CoolProp::HelmholtzEOSMixtureBackend.

Definition at line 120 of file CubicBackend.h.

◆ copy_all_alpha_functions()

void CoolProp::AbstractCubicBackend::copy_all_alpha_functions ( AbstractCubicBackend * donor )

Definition at line 626 of file CubicBackend.cpp.

◆ copy_internals()

void CoolProp::AbstractCubicBackend::copy_internals ( AbstractCubicBackend & donor )

Copy the internals from another class into this one (kij, alpha functions, cp0 functions, etc.)

Definition at line 642 of file CubicBackend.cpp.

◆ copy_k()

void CoolProp::AbstractCubicBackend::copy_k ( AbstractCubicBackend * donor )

Definition at line 634 of file CubicBackend.cpp.

◆ fluid_param_string()

std::string CoolProp::AbstractCubicBackend::fluid_param_string ( const std::string & ParamName )

virtual

Return a string from the backend for the mixture/fluid.

Reimplemented from CoolProp::AbstractState.

Definition at line 87 of file CubicBackend.cpp.

◆ get_binary_interaction_double() [1/2]

double CoolProp::AbstractCubicBackend::get_binary_interaction_double	(	const std::size_t	i,
		const std::size_t	j,
		const std::string &	parameter
	)

virtual

Get binary mixture double value.

Get binary mixture floating point parameter for this instance.

Reimplemented from CoolProp::HelmholtzEOSMixtureBackend.

Reimplemented in CoolProp::VTPRBackend.

Definition at line 608 of file CubicBackend.cpp.

◆ get_binary_interaction_double() [2/2]

double CoolProp::AbstractCubicBackend::get_binary_interaction_double	(	const std::string &	CAS1,
		const std::string &	CAS2,
		const std::string &	parameter
	)

inlinevirtual

Get binary mixture double value (EXPERT USE ONLY!!!)

Reimplemented from CoolProp::AbstractState.

Definition at line 228 of file CubicBackend.h.

◆ get_copy()

virtual HelmholtzEOSMixtureBackend* CoolProp::AbstractCubicBackend::get_copy ( bool generate_SatL_and_SatV = true )

pure virtual

Reimplemented from CoolProp::HelmholtzEOSMixtureBackend.

Implemented in CoolProp::VTPRBackend, CoolProp::PengRobinsonBackend, and CoolProp::SRKBackend.

◆ get_critical_is_terminated()

bool CoolProp::AbstractCubicBackend::get_critical_is_terminated	(	double &	delta,
		double &	tau
	)

virtual

Checking function to see if we should stop the tracing of the critical contour.

Reimplemented from CoolProp::HelmholtzEOSMixtureBackend.

Definition at line 161 of file CubicBackend.cpp.

◆ get_critical_point_search_radii()

void CoolProp::AbstractCubicBackend::get_critical_point_search_radii	(	double &	R_delta,
		double &	R_tau
	)

virtual

Get the search radius in delta and tau for the tracer, scaled appropriately for cubic.

Reimplemented from CoolProp::HelmholtzEOSMixtureBackend.

Definition at line 150 of file CubicBackend.cpp.

◆ get_critical_point_starting_values()

void CoolProp::AbstractCubicBackend::get_critical_point_starting_values	(	double &	delta0,
		double &	tau0
	)

virtual

Get the the starting values for the critical point evaluation routines.

Reimplemented from CoolProp::HelmholtzEOSMixtureBackend.

Definition at line 171 of file CubicBackend.cpp.

◆ get_cubic()

shared_ptr<AbstractCubic>& CoolProp::AbstractCubicBackend::get_cubic ( )

inline

Get a reference to the shared pointer managing the generalized cubic class.

Definition at line 48 of file CubicBackend.h.

◆ get_fluid_constant()

const double CoolProp::AbstractCubicBackend::get_fluid_constant	(	std::size_t	i,
		parameters	param
	)		const

inlinevirtual

Get a constant for one of the fluids forming this mixture

Parameters

i	Index (0-based) of the fluid
param	parameter you want to obtain (probably one that is a trivial parameter)

Reimplemented from CoolProp::HelmholtzEOSMixtureBackend.

Definition at line 74 of file CubicBackend.h.

◆ get_fluid_parameter_double()

double CoolProp::AbstractCubicBackend::get_fluid_parameter_double	(	const size_t	i,
		const std::string &	parameter
	)

virtual

Double fluid parameter (currently the volume translation parameter for cubic)

Reimplemented from CoolProp::AbstractState.

Definition at line 697 of file CubicBackend.cpp.

◆ get_linear_reducing_parameters()

void CoolProp::AbstractCubicBackend::get_linear_reducing_parameters	(	double &	rhomolar,
		double &	T
	)

Get linear mole fraction weighting of the critical molar volumes and temperatures these are used in te.

Definition at line 135 of file CubicBackend.cpp.

◆ get_mole_fractions()

const std::vector<CoolPropDbl>& CoolProp::AbstractCubicBackend::get_mole_fractions ( void )

inlinevirtual

Get the mole fractions of the fluid.

Implements CoolProp::AbstractState.

Definition at line 70 of file CubicBackend.h.

◆ rho_Tp_cubic()

void CoolProp::AbstractCubicBackend::rho_Tp_cubic	(	CoolPropDbl	T,
		CoolPropDbl	p,
		int &	Nsolns,
		double &	rho0,
		double &	rho1,
		double &	rho2
	)

Use the cubic EOS to solve for density

\[ \left[ \begin{array}{l} Z^3 \\ +Z^2[B(\Delta_1+\Delta_2-1)-1] +Z[A-B(\Delta_1+\Delta_2)-B^2(\Delta_1+\Delta_2-\Delta_1\Delta_2)] +[-AB-\Delta_1\Delta2(-B^2-B^3)] \right] \]

with

\[ A = \frac{ap}{R^2T^2} \]

\[ B = \frac{bp}{RT} \]

Sympy code: R,T,v,b,a,Delta_1,Delta_2,p,Z,A,B = symbols('R,T,v,b,a,Delta_1,Delta_2,p,Z,A,B') eqn = (R*T/(v-b)-a/(v+Delta_1*b)/(v+Delta_2*b)-p).subs(v,Z*R*T/p) eqn2 = eqn*(R*T*Z/p-b)*(R*T*Z/p+Delta_2*b)*(R*T*Z/p+Delta_1*b)/(R**3*T**3/p**2) collect(expand(factor(-eqn2)),Z).subs(b*p/(R*T),B).subs(a*p/(R**2*T**2),A)

Definition at line 337 of file CubicBackend.cpp.

◆ saturation()

void CoolProp::AbstractCubicBackend::saturation ( CoolProp::input_pairs inputs )

Cubic backend flashes for PQ, and QT.

Definition at line 447 of file CubicBackend.cpp.

◆ set_alpha0_from_components()

void CoolProp::AbstractCubicBackend::set_alpha0_from_components ( )

Set the non-dimensionalized Helmholtz energy based on the fluids defined in the components vector.

Definition at line 69 of file CubicBackend.cpp.

◆ set_alpha_from_components()

void CoolProp::AbstractCubicBackend::set_alpha_from_components ( )

Set the alpha function based on the alpha function defined in the components vector;.

If components is not present, you are using a vanilla cubic, so don't do anything

Definition at line 45 of file CubicBackend.cpp.

◆ set_binary_interaction_double() [1/2]

void CoolProp::AbstractCubicBackend::set_binary_interaction_double	(	const std::size_t	i,
		const std::size_t	j,
		const std::string &	parameter,
		const double	value
	)

virtual

Set binary mixture floating point parameter.

Set binary mixture floating point parameter for this instance.

Also set the parameters in the managed pointers for other states

Reimplemented from CoolProp::HelmholtzEOSMixtureBackend.

Reimplemented in CoolProp::VTPRBackend.

Definition at line 587 of file CubicBackend.cpp.

◆ set_binary_interaction_double() [2/2]

void CoolProp::AbstractCubicBackend::set_binary_interaction_double	(	const std::string &	CAS1,
		const std::string &	CAS2,
		const std::string &	parameter,
		const double	value
	)

inlinevirtual

Set binary mixture floating point parameter (EXPERT USE ONLY!!!)

Reimplemented from CoolProp::AbstractState.

Definition at line 225 of file CubicBackend.h.

◆ set_cubic_alpha_C()

void CoolProp::AbstractCubicBackend::set_cubic_alpha_C	(	const size_t	i,
		const std::string &	parameter,
		const double	c1,
		const double	c2,
		const double	c3
	)

virtual

Set the cubic alpha function's constants:

Reimplemented from CoolProp::HelmholtzEOSMixtureBackend.

Definition at line 656 of file CubicBackend.cpp.

◆ set_fluid_parameter_double()

void CoolProp::AbstractCubicBackend::set_fluid_parameter_double	(	const size_t	i,
		const std::string &	parameter,
		const double	value
	)

virtual

Set fluid parameter (currently the volume translation parameter for cubic)

Reimplemented from CoolProp::HelmholtzEOSMixtureBackend.

Definition at line 675 of file CubicBackend.cpp.

◆ set_mass_fractions()

void CoolProp::AbstractCubicBackend::set_mass_fractions ( const std::vector< CoolPropDbl > & mass_fractions )

inlinevirtual

Implements CoolProp::AbstractState.

Definition at line 64 of file CubicBackend.h.

◆ set_volu_fractions()

void CoolProp::AbstractCubicBackend::set_volu_fractions ( const std::vector< CoolPropDbl > & volu_fractions )

inlinevirtual

Reimplemented from CoolProp::AbstractState.

Definition at line 67 of file CubicBackend.h.

◆ setup()

void CoolProp::AbstractCubicBackend::setup ( bool generate_SatL_and_SatV = true )

Set the pointer to the residual helmholtz class, etc.

Definition at line 6 of file CubicBackend.cpp.

◆ solver_rho_Tp()

CoolPropDbl CoolProp::AbstractCubicBackend::solver_rho_Tp	(	CoolPropDbl	T,
		CoolPropDbl	p,
		CoolPropDbl	rho_guess = `-1`
	)

virtual

/brief Solve for rho = f(T,p)

You can often get three solutions, to overcome this problem you must either specify the phase, or provide a reasonable guess value for rho_guess, but not both

Reimplemented from CoolProp::HelmholtzEOSMixtureBackend.

Definition at line 514 of file CubicBackend.cpp.

◆ solver_rho_Tp_global()

CoolPropDbl CoolProp::AbstractCubicBackend::solver_rho_Tp_global	(	CoolPropDbl	T,
		CoolPropDbl	p,
		CoolPropDbl	rhomax
	)

virtual

Reimplemented from CoolProp::HelmholtzEOSMixtureBackend.

Definition at line 510 of file CubicBackend.cpp.

◆ solver_rho_Tp_SRK()

CoolPropDbl CoolProp::AbstractCubicBackend::solver_rho_Tp_SRK	(	CoolPropDbl	T,
		CoolPropDbl	p,
		phases	phase
	)

inlinevirtual

In this class, we are already doing cubic evaluation, just delegate to our function.

Reimplemented from CoolProp::HelmholtzEOSMixtureBackend.

Definition at line 200 of file CubicBackend.h.

◆ spinodal_densities()

std::vector< double > CoolProp::AbstractCubicBackend::spinodal_densities ( )

Definition at line 411 of file CubicBackend.cpp.

◆ update()

void CoolProp::AbstractCubicBackend::update	(	CoolProp::input_pairs	input_pair,
		double	value1,
		double	value2
	)

virtual

The standard update function.

Parameters

input_pair	The pair of inputs that will be provided
value1	The first input value
value2	The second input value

Reimplemented from CoolProp::HelmholtzEOSMixtureBackend.

Definition at line 283 of file CubicBackend.cpp.

◆ update_DmolarT()

void CoolProp::AbstractCubicBackend::update_DmolarT ( )

virtual

Update the state for DT inputs if phase is imposed. Otherwise delegate to base class.

Definition at line 198 of file CubicBackend.cpp.

◆ update_TPD_state()

void CoolProp::AbstractCubicBackend::update_TPD_state ( )

inline

Update the state used to calculate the tangent-plane-distance.

Definition at line 213 of file CubicBackend.h.

◆ using_mass_fractions()

bool CoolProp::AbstractCubicBackend::using_mass_fractions ( void )

inlinevirtual

Implements CoolProp::AbstractState.

Definition at line 57 of file CubicBackend.h.

◆ using_mole_fractions()

bool CoolProp::AbstractCubicBackend::using_mole_fractions ( void )

inlinevirtual

Implements CoolProp::AbstractState.

Definition at line 54 of file CubicBackend.h.

◆ using_volu_fractions()

bool CoolProp::AbstractCubicBackend::using_volu_fractions ( void )

inlinevirtual

Implements CoolProp::AbstractState.

Definition at line 60 of file CubicBackend.h.

Member Data Documentation

◆ components

std::vector<CubicLibrary::CubicsValues> CoolProp::AbstractCubicBackend::components

protected

The components that are in use.

Definition at line 36 of file CubicBackend.h.

◆ cubic

shared_ptr<AbstractCubic> CoolProp::AbstractCubicBackend::cubic

protected

Definition at line 35 of file CubicBackend.h.

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

src/Backends/Cubics/CubicBackend.h
src/Backends/Cubics/CubicBackend.cpp

Detailed Description

Public Member Functions

Protected Attributes

Additional Inherited Members

Member Function Documentation

◆ calc_acentric_factor()

◆ calc_alphar_deriv_nocache()

◆ calc_fluid_names()

◆ calc_gas_constant()

◆ calc_molar_mass()

◆ calc_p_critical()

◆ calc_pressure_nocache()

◆ calc_reciprocal_reduced_temperature()

◆ calc_reduced_density()

◆ calc_reducing_state_nocache()

◆ calc_rhomolar_critical()

◆ calc_T_critical()

◆ copy_all_alpha_functions()

◆ copy_internals()

◆ copy_k()

◆ fluid_param_string()

◆ get_binary_interaction_double() [1/2]

◆ get_binary_interaction_double() [2/2]

◆ get_copy()

◆ get_critical_is_terminated()

◆ get_critical_point_search_radii()

◆ get_critical_point_starting_values()

◆ get_cubic()

◆ get_fluid_constant()

◆ get_fluid_parameter_double()

◆ get_linear_reducing_parameters()

◆ get_mole_fractions()

◆ rho_Tp_cubic()

◆ saturation()

◆ set_alpha0_from_components()

◆ set_alpha_from_components()

◆ set_binary_interaction_double() [1/2]

◆ set_binary_interaction_double() [2/2]

◆ set_cubic_alpha_C()

◆ set_fluid_parameter_double()

◆ set_mass_fractions()

◆ set_volu_fractions()

◆ setup()

◆ solver_rho_Tp()

◆ solver_rho_Tp_global()

◆ solver_rho_Tp_SRK()

◆ spinodal_densities()

◆ update()

◆ update_DmolarT()

◆ update_TPD_state()

◆ using_mass_fractions()

◆ using_mole_fractions()

◆ using_volu_fractions()

Member Data Documentation

◆ components

◆ cubic