Package Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic
Base functions as described in IAWPS/IF97

Information

Package description

Package BaseIF97/Basic computes the fundamental functions for the 5 regions of the steam tables as described in the standards document IF97.pdf. The code of these functions has been generated using Mathematica and the add-on packages "Format" and "Optimize" to generate highly efficient, expression-optimized C-code from a symbolic representation of the thermodynamic functions. The C-code has than been transformed into Modelica code. An important feature of this optimization was to simultaneously optimize the functions and the directional derivatives because they share many common subexpressions.

Package contents

Function g1 computes the dimensionless Gibbs function for region 1 and all derivatives up to order 2 w.r.t. pi and tau. Inputs: p and T.
Function g2 computes the dimensionless Gibbs function for region 2 and all derivatives up to order 2 w.r.t. pi and tau. Inputs: p and T.
Function g2metastable computes the dimensionless Gibbs function for metastable vapour (adjacent to region 2 but 2-phase at equilibrium) and all derivatives up to order 2 w.r.t. pi and tau. Inputs: p and T.
Function f3 computes the dimensionless Helmholtz function for region 3 and all derivatives up to order 2 w.r.t. delta and tau. Inputs: d and T.
Function g5computes the dimensionless Gibbs function for region 5 and all derivatives up to order 2 w.r.t. pi and tau. Inputs: p and T.
Function tph1 computes the inverse function T(p,h) in region 1.
Function tph2 computes the inverse function T(p,h) in region 2.
Function tps2a computes the inverse function T(p,s) in region 2a.
Function tps2b computes the inverse function T(p,s) in region 2b.
Function tps2c computes the inverse function T(p,s) in region 2c.
Function tps2 computes the inverse function T(p,s) in region 2.
Function tsat computes the saturation temperature as a function of pressure.
Function dtsatofp computes the derivative of the saturation temperature w.r.t. pressure as a function of pressure.
Function tsat_der computes the Modelica derivative function of tsat.
Function psat computes the saturation pressure as a function of temperature.
Function dptofT computes the derivative of the saturation pressure w.r.t. temperature as a function of temperature.
Function psat_der computes the Modelica derivative function of psat.

Version Info and Revision history

First implemented: July, 2000 by Hubertus Tummescheit

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

Initial version: July 2000
Documentation added: December 2002

Equation from:

[1] The international Association for the Properties of Water and Steam
Vejle, Denmark
August 2003
Supplementary Release on Backward Equations for the Functions T(p,h), v(p,h) and T(p,s),
v(p,s) for Region 3 of the IAPWS Industrial Formulation 1997 for the Thermodynamic Properties of
Water and Steam

Extends from Modelica.Icons.FunctionsPackage (Icon for packages containing functions).

Package Contents

Name	Description
`dptofT`	Derivative of pressure w.r.t. temperature along the saturation pressure curve
`dtsatofp`	Derivative of saturation temperature w.r.t. pressure
`f3`	Helmholtz function for region 3: f(d,T)
`f3deltatau`	1st derivatives of f w.r.t. delta and tau
`g1`	Gibbs function for region 1: g(p,T)
`g1pitau`	Derivative of g w.r.t. pi and tau
`g2`	Gibbs function for region 2: g(p,T)
`g2metastable`	Gibbs function for metastable part of region 2: g(p,T)
`g2pitau`	Derivative of g w.r.t. pi and tau
`g5`	Base function for region 5: g(p,T)
`g5pitau`	Derivative of g w.r.t. pi and tau
`gibbs`	Gibbs function for region 1, 2 or 5: g(p,T,region)
`h2ab_s`	Boundary between regions 2a and 2b
`h3ab_p`	Region 3 a b boundary for pressure/enthalpy
`p1_hs`	Pressure as a function of enthalpy and entropy in region 1
`p2a_hs`	Pressure as a function of enthalpy and entropy in subregion 2a
`p2b_hs`	Pressure as a function of enthalpy and entropy in subregion 2a
`p2c_hs`	Pressure as a function of enthalpy and entropy in subregion 2c
`psat`	Region 4 saturation pressure as a function of temperature
`psat_der`	Derivative function for psat
`T3a_ph`	Region 3 a: inverse function T(p,h)
`T3a_ps`	Region 3 a: inverse function T(p,s)
`T3b_ph`	Region 3 b: inverse function T(p,h)
`T3b_ps`	Region 3 b: inverse function T(p,s)
`tph1`	Inverse function for region 1: T(p,h)
`tph2`	Reverse function for region 2: T(p,h)
`tps1`	Inverse function for region 1: T(p,s)
`tps2`	Reverse function for region 2: T(p,s)
`tps2a`	Reverse function for region 2a: T(p,s)
`tps2b`	Reverse function for region 2b: T(p,s)
`tps2c`	Reverse function for region 2c: T(p,s)
`tsat`	Region 4 saturation temperature as a function of pressure
`tsat_der`	Derivative function for tsat
`v3a_ph`	Region 3 a: inverse function v(p,h)
`v3a_ps`	Region 3 a: inverse function v(p,s)
`v3b_ph`	Region 3 b: inverse function v(p,h)
`v3b_ps`	Region 3 b: inverse function v(p,s)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.g1
Gibbs function for region 1: g(p,T)

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature (K)

Outputs

Type	Name	Description
`GibbsDerivs`	`g`	Dimensionless Gibbs function and derivatives w.r.t. pi and tau

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.g2
Gibbs function for region 2: g(p,T)

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature (K)

Outputs

Type	Name	Description
`GibbsDerivs`	`g`	Dimensionless Gibbs function and derivatives w.r.t. pi and tau

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.g2metastable
Gibbs function for metastable part of region 2: g(p,T)

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature (K)

Outputs

Type	Name	Description
`GibbsDerivs`	`g`	Dimensionless Gibbs function and derivatives w.r.t. pi and tau

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.f3
Helmholtz function for region 3: f(d,T)

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature (K)

Outputs

Type	Name	Description
`HelmholtzDerivs`	`f`	Dimensionless Helmholtz function and derivatives w.r.t. delta and tau

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.g5
Base function for region 5: g(p,T)

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature (K)

Outputs

Type	Name	Description
`GibbsDerivs`	`g`	Dimensionless Gibbs function and derivatives w.r.t. pi and tau

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.gibbs
Gibbs function for region 1, 2 or 5: g(p,T,region)

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature (K)
`Integer`	`region`	IF97 region, 1, 2 or 5

Outputs

Type	Name	Description
`Real`	`g`	Dimensionless Gibbs function

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.g1pitau
Derivative of g w.r.t. pi and tau

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature (K)

Outputs

Type	Name	Description
`Real`	`pi`	Dimensionless pressure
`Real`	`tau`	Dimensionless temperature
`Real`	`gpi`	Dimensionless derivative of Gibbs function w.r.t. pi
`Real`	`gtau`	Dimensionless derivative of Gibbs function w.r.t. tau

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.g2pitau
Derivative of g w.r.t. pi and tau

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature (K)

Outputs

Type	Name	Description
`Real`	`pi`	Dimensionless pressure
`Real`	`tau`	Dimensionless temperature
`Real`	`gpi`	Dimensionless derivative of Gibbs function w.r.t. pi
`Real`	`gtau`	Dimensionless derivative of Gibbs function w.r.t. tau

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.g5pitau
Derivative of g w.r.t. pi and tau

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature (K)

Outputs

Type	Name	Description
`Real`	`pi`	Dimensionless pressure
`Real`	`tau`	Dimensionless temperature
`Real`	`gpi`	Dimensionless derivative of Gibbs function w.r.t. pi
`Real`	`gtau`	Dimensionless derivative of Gibbs function w.r.t. tau

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.f3deltatau
1st derivatives of f w.r.t. delta and tau

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature (K)

Outputs

Type	Name	Description
`Real`	`delta`	Dimensionless density
`Real`	`tau`	Dimensionless temperature
`Real`	`fdelta`	Dimensionless derivative of Helmholtz function w.r.t. delta
`Real`	`ftau`	Dimensionless derivative of Helmholtz function w.r.t. tau

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.tph1
Inverse function for region 1: T(p,h)

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature (K)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.tps1
Inverse function for region 1: T(p,s)

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature (K)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.tph2
Reverse function for region 2: T(p,h)

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature (K)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.tps2a
Reverse function for region 2a: T(p,s)

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature (K)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.tps2b
Reverse function for region 2b: T(p,s)

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature (K)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.tps2c
Reverse function for region 2c: T(p,s)

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature (K)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.tps2
Reverse function for region 2: T(p,s)

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature (K)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.tsat
Region 4 saturation temperature as a function of pressure

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure

Outputs

Type	Name	Description
`Temperature`	`t_sat`	Temperature

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.dtsatofp
Derivative of saturation temperature w.r.t. pressure

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure

Outputs

Type	Name	Description
`Real`	`dtsat`	Derivative of T w.r.t. p

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.tsat_der
Derivative function for tsat

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Real`	`der_p`	Pressure derivative

Outputs

Type	Name	Description
`Real`	`der_tsat`	Temperature derivative

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.psat
Region 4 saturation pressure as a function of temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Temperature`	`T`	Temperature (K)

Outputs

Type	Name	Description
`Pressure`	`p_sat`	Pressure

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.dptofT
Derivative of pressure w.r.t. temperature along the saturation pressure curve

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Temperature`	`T`	Temperature (K)

Outputs

Type	Name	Description
`Real`	`dpt`	Temperature derivative of pressure

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.psat_der
Derivative function for psat

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Temperature`	`T`	Temperature (K)
`Real`	`der_T`	Temperature derivative

Outputs

Type	Name	Description
`Real`	`der_psat`	Pressure

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.p1_hs
Pressure as a function of enthalpy and entropy in region 1

Information

Equation number 1 from:
The International Association for the Properties of Water and Steam
Gaithersburg, Maryland, USA
September 2001
Supplementary Release on Backward Equations for Pressure as a Function of Enthalpy and Entropy p(h,s) to the IAPWS Industrial Formulation 1997 for the Thermodynamic Properties of Water and Steam

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy
`SpecificEntropy`	`s`	Specific entropy

Outputs

Type	Name	Description
`Pressure`	`p`	Pressure

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.h2ab_s
Boundary between regions 2a and 2b

Information

Equation number 2 from:
The International Association for the Properties of Water and Steam
Gaithersburg, Maryland, USA
September 2001
Supplementary Release on Backward Equations for Pressure as a Function of Enthalpy and Entropy p(h,s) to the IAPWS Industrial Formulation 1997 for the Thermodynamic Properties of Water and Steam

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`SpecificEntropy`	`s`	Entropy

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Enthalpy

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.p2a_hs
Pressure as a function of enthalpy and entropy in subregion 2a

Information

Equation number 3 from:
The International Association for the Properties of Water and Steam
Gaithersburg, Maryland, USA
September 2001
Supplementary Release on Backward Equations for Pressure as a Function of Enthalpy and Entropy p(h,s) to the IAPWS Industrial Formulation 1997 for the Thermodynamic Properties of Water and Steam

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy
`SpecificEntropy`	`s`	Specific entropy

Outputs

Type	Name	Description
`Pressure`	`p`	Pressure

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.p2b_hs
Pressure as a function of enthalpy and entropy in subregion 2a

Information

Equation number 4 from:
The International Association for the Properties of Water and Steam
Gaithersburg, Maryland, USA
September 2001
Supplementary Release on Backward Equations for Pressure as a Function of Enthalpy and Entropy p(h,s) to the IAPWS Industrial Formulation 1997 for the Thermodynamic Properties of Water and Steam

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy
`SpecificEntropy`	`s`	Specific entropy

Outputs

Type	Name	Description
`Pressure`	`p`	Pressure

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.p2c_hs
Pressure as a function of enthalpy and entropy in subregion 2c

Information

Equation number 5 from:
The International Association for the Properties of Water and Steam
Gaithersburg, Maryland, USA
September 2001
Supplementary Release on Backward Equations for Pressure as a Function of Enthalpy and Entropy p(h,s) to the IAPWS Industrial Formulation 1997 for the Thermodynamic Properties of Water and Steam

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy
`SpecificEntropy`	`s`	Specific entropy

Outputs

Type	Name	Description
`Pressure`	`p`	Pressure

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.h3ab_p
Region 3 a b boundary for pressure/enthalpy

Information

Equation number 1 from:

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Enthalpy

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.T3a_ph
Region 3 a: inverse function T(p,h)

Information

Equation number 2 from:

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy

Outputs

Type	Name	Description
`Temp_K`	`T`	Temperature

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.T3b_ph
Region 3 b: inverse function T(p,h)

Information

Equation number 3 from:

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy

Outputs

Type	Name	Description
`Temp_K`	`T`	Temperature

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.v3a_ph
Region 3 a: inverse function v(p,h)

Information

Equation number 4 from:

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy

Outputs

Type	Name	Description
`SpecificVolume`	`v`	Specific volume

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.v3b_ph
Region 3 b: inverse function v(p,h)

Information

Equation number 5 from:

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy

Outputs

Type	Name	Description
`SpecificVolume`	`v`	Specific volume

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.T3a_ps
Region 3 a: inverse function T(p,s)

Information

Equation number 6 from:

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy

Outputs

Type	Name	Description
`Temp_K`	`T`	Temperature

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.T3b_ps
Region 3 b: inverse function T(p,s)

Information

Equation number 7 from:

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy

Outputs

Type	Name	Description
`Temp_K`	`T`	Temperature

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.v3a_ps
Region 3 a: inverse function v(p,s)

Information

Equation number 8 from:

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy

Outputs

Type	Name	Description
`SpecificVolume`	`v`	Specific volume

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.v3b_ps
Region 3 b: inverse function v(p,s)

Information

Equation number 9 from:

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy

Outputs

Type	Name	Description
`SpecificVolume`	`v`	Specific volume

Package Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​BasicBase functions as described in IAWPS/IF97

Information

Package description

Package contents

Version Info and Revision history

Package Contents

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Basic.​g1Gibbs function for region 1: g(p,T)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Basic.​g2Gibbs function for region 2: g(p,T)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Basic.​g2metastableGibbs function for metastable part of region 2: g(p,T)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Basic.​f3Helmholtz function for region 3: f(d,T)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Basic.​g5Base function for region 5: g(p,T)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Basic.​gibbsGibbs function for region 1, 2 or 5: g(p,T,region)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Basic.​g1pitauDerivative of g w.r.t. pi and tau

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Basic.​g2pitauDerivative of g w.r.t. pi and tau

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Basic.​g5pitauDerivative of g w.r.t. pi and tau

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Basic.​f3deltatau1st derivatives of f w.r.t. delta and tau

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Basic.​tph1Inverse function for region 1: T(p,h)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Basic.​tps1Inverse function for region 1: T(p,s)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Basic.​tph2Reverse function for region 2: T(p,h)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Basic.​tps2aReverse function for region 2a: T(p,s)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Basic.​tps2bReverse function for region 2b: T(p,s)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Basic.​tps2cReverse function for region 2c: T(p,s)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Basic.​tps2Reverse function for region 2: T(p,s)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Basic.​tsatRegion 4 saturation temperature as a function of pressure

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Basic.​dtsatofpDerivative of saturation temperature w.r.t. pressure

Information

Package Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic
Base functions as described in IAWPS/IF97

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.g1
Gibbs function for region 1: g(p,T)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.g2
Gibbs function for region 2: g(p,T)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.g2metastable
Gibbs function for metastable part of region 2: g(p,T)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.f3
Helmholtz function for region 3: f(d,T)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.g5
Base function for region 5: g(p,T)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.gibbs
Gibbs function for region 1, 2 or 5: g(p,T,region)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.g1pitau
Derivative of g w.r.t. pi and tau

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.g2pitau
Derivative of g w.r.t. pi and tau

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.g5pitau
Derivative of g w.r.t. pi and tau

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.f3deltatau
1st derivatives of f w.r.t. delta and tau

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.tph1
Inverse function for region 1: T(p,h)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.tps1
Inverse function for region 1: T(p,s)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.tph2
Reverse function for region 2: T(p,h)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.tps2a
Reverse function for region 2a: T(p,s)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.tps2b
Reverse function for region 2b: T(p,s)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.tps2c
Reverse function for region 2c: T(p,s)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.tps2
Reverse function for region 2: T(p,s)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.tsat
Region 4 saturation temperature as a function of pressure

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.dtsatofp
Derivative of saturation temperature w.r.t. pressure

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.tsat_der
Derivative function for tsat

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.psat
Region 4 saturation pressure as a function of temperature

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.dptofT
Derivative of pressure w.r.t. temperature along the saturation pressure curve

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.psat_der
Derivative function for psat

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.p1_hs
Pressure as a function of enthalpy and entropy in region 1

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.h2ab_s
Boundary between regions 2a and 2b

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.p2a_hs
Pressure as a function of enthalpy and entropy in subregion 2a

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.p2b_hs
Pressure as a function of enthalpy and entropy in subregion 2a

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.p2c_hs
Pressure as a function of enthalpy and entropy in subregion 2c

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.h3ab_p
Region 3 a b boundary for pressure/enthalpy

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.T3a_ph
Region 3 a: inverse function T(p,h)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.T3b_ph
Region 3 b: inverse function T(p,h)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.v3a_ph
Region 3 a: inverse function v(p,h)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.v3b_ph
Region 3 b: inverse function v(p,h)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.T3a_ps
Region 3 a: inverse function T(p,s)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.T3b_ps
Region 3 b: inverse function T(p,s)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.v3a_ps
Region 3 a: inverse function v(p,s)