.Modelica.Media.Water.IF97_Utilities

Information

Package description

This package provides high accuracy physical properties for water according to the IAPWS/IF97 standard. It has been part of the ThermoFluid Modelica library and been extended, reorganized and documented to become part of the Modelica Standard library.

An important feature that distinguishes this implementation of the IF97 steam property standard is that this implementation has been explicitly designed to work well in dynamic simulations. Computational performance has been of high importance. This means that there often exist several ways to get the same result from different functions if one of the functions is called often but can be optimized for that purpose.

The original documentation of the IAPWS/IF97 steam properties can freely be distributed with computer implementations, so for curious minds the complete standard documentation is provided with the Modelica properties library. The following documents are included (in directory Modelica/Resources/Documentation/Media/Water/IF97documentation):

Package contents

Version Info and Revision history

Author: Hubertus Tummescheit,
Modelon AB
Ideon Science Park
SE-22370 Lund, Sweden
email: hubertus@modelon.se

Contents

NameDescription
BaseIF97Modelica Physical Property Model: the new industrial formulation IAPWS-IF97
iter
waterBaseProp_phIntermediate property record for water
waterBaseProp_psIntermediate property record for water
rho_props_psDensity as function of pressure and specific entropy
rho_psDensity as function of pressure and specific entropy
T_props_psTemperature as function of pressure and specific entropy
T_psTemperature as function of pressure and specific entropy
h_props_psSpecific enthalpy as function or pressure and temperature
h_psSpecific enthalpy as function or pressure and temperature
phase_psPhase as a function of pressure and specific entropy
phase_phPhase as a function of pressure and specific enthalpy
phase_dTPhase as a function of pressure and temperature
rho_props_phDensity as function of pressure and specific enthalpy
rho_phDensity as function of pressure and specific enthalpy
rho_ph_derDerivative function of rho_ph
T_props_phTemperature as function of pressure and specific enthalpy
T_phTemperature as function of pressure and specific enthalpy
T_ph_derDerivative function of T_ph
s_props_phSpecific entropy as function of pressure and specific enthalpy
s_phSpecific entropy as function of pressure and specific enthalpy
s_ph_derSpecific entropy as function of pressure and specific enthalpy
cv_props_phSpecific heat capacity at constant volume as function of pressure and specific enthalpy
cv_phSpecific heat capacity at constant volume as function of pressure and specific enthalpy
regionAssertRealAssert function for inlining
cp_props_phSpecific heat capacity at constant pressure as function of pressure and specific enthalpy
cp_phSpecific heat capacity at constant pressure as function of pressure and specific enthalpy
beta_props_phIsobaric expansion coefficient as function of pressure and specific enthalpy
beta_phIsobaric expansion coefficient as function of pressure and specific enthalpy
kappa_props_phIsothermal compressibility factor as function of pressure and specific enthalpy
kappa_phIsothermal compressibility factor as function of pressure and specific enthalpy
velocityOfSound_props_phSpeed of sound as function of pressure and specific enthalpy
velocityOfSound_ph
isentropicExponent_props_phIsentropic exponent as function of pressure and specific enthalpy
isentropicExponent_phIsentropic exponent as function of pressure and specific enthalpy
ddph_propsDensity derivative by pressure
ddphDensity derivative by pressure
ddhp_propsDensity derivative by specific enthalpy
ddhpDensity derivative by specific enthalpy
waterBaseProp_pTIntermediate property record for water (p and T preferred states)
rho_props_pTDensity as function or pressure and temperature
rho_pTDensity as function or pressure and temperature
h_props_pTSpecific enthalpy as function or pressure and temperature
h_pTSpecific enthalpy as function or pressure and temperature
h_pT_derDerivative function of h_pT
rho_pT_derDerivative function of rho_pT
s_props_pTSpecific entropy as function of pressure and temperature
s_pTTemperature as function of pressure and temperature
cv_props_pTSpecific heat capacity at constant volume as function of pressure and temperature
cv_pTSpecific heat capacity at constant volume as function of pressure and temperature
cp_props_pTSpecific heat capacity at constant pressure as function of pressure and temperature
cp_pTSpecific heat capacity at constant pressure as function of pressure and temperature
beta_props_pTIsobaric expansion coefficient as function of pressure and temperature
beta_pTIsobaric expansion coefficient as function of pressure and temperature
kappa_props_pTIsothermal compressibility factor as function of pressure and temperature
kappa_pTIsothermal compressibility factor as function of pressure and temperature
velocityOfSound_props_pTSpeed of sound as function of pressure and temperature
velocityOfSound_pTSpeed of sound as function of pressure and temperature
isentropicExponent_props_pTIsentropic exponent as function of pressure and temperature
isentropicExponent_pTIsentropic exponent as function of pressure and temperature
waterBaseProp_dTIntermediate property record for water (d and T preferred states)
h_props_dTSpecific enthalpy as function of density and temperature
h_dTSpecific enthalpy as function of density and temperature
h_dT_derDerivative function of h_dT
p_props_dTPressure as function of density and temperature
p_dTPressure as function of density and temperature
p_dT_derDerivative function of p_dT
s_props_dTSpecific entropy as function of density and temperature
s_dTTemperature as function of density and temperature
cv_props_dTSpecific heat capacity at constant volume as function of density and temperature
cv_dTSpecific heat capacity at constant volume as function of density and temperature
cp_props_dTSpecific heat capacity at constant pressure as function of density and temperature
cp_dTSpecific heat capacity at constant pressure as function of density and temperature
beta_props_dTIsobaric expansion coefficient as function of density and temperature
beta_dTIsobaric expansion coefficient as function of density and temperature
kappa_props_dTIsothermal compressibility factor as function of density and temperature
kappa_dTIsothermal compressibility factor as function of density and temperature
velocityOfSound_props_dTSpeed of sound as function of density and temperature
velocityOfSound_dTSpeed of sound as function of density and temperature
isentropicExponent_props_dTIsentropic exponent as function of density and temperature
isentropicExponent_dTIsentropic exponent as function of density and temperature
hl_pCompute the saturated liquid specific h(p)
hv_pCompute the saturated vapour specific h(p)
sl_pCompute the saturated liquid specific s(p)
sv_pCompute the saturated vapour specific s(p)
rhol_TCompute the saturated liquid d(T)
rhov_TCompute the saturated vapour d(T)
rhol_pCompute the saturated liquid d(p)
rhov_pCompute the saturated vapour d(p)
dynamicViscosityCompute eta(d,T) in the one-phase region
thermalConductivityCompute lambda(d,T,p) in the one-phase region
surfaceTensionCompute sigma(T) at saturation T
isentropicEnthalpyIsentropic specific enthalpy from p,s (preferably use dynamicIsentropicEnthalpy in dynamic simulation!)
isentropicEnthalpy_props
isentropicEnthalpy_derDerivative of isentropic specific enthalpy from p,s
dynamicIsentropicEnthalpyIsentropic specific enthalpy from p,s and good guesses of d and T

Revisions

Intermediate release notes during development

Currently the Events/noEvents switch is only implemented for p-h states. Only after testing that implementation, it will be extended to dT.


Generated at 2024-05-19T18:15:52Z by OpenModelicaOpenModelica 1.22.4 using GenerateDoc.mos