Package Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses
Efficient inverses for selected pairs of variables

Information

Package description

Package contents

Function fixdT constrains density and temperature to allowed region
Function dofp13 computes d as a function of p at boundary between regions 1 and 3
Function dofp23 computes d as a function of p at boundary between regions 2 and 3
Function dofpt3 iteration to compute d as a function of p and T in region 3
Function dtofph3 iteration to compute d and T as a function of p and h in region 3
Function dtofps3 iteration to compute d and T as a function of p and s in region 3
Function dtofpsdt3 iteration to compute d and T as a function of p and s in region 3, with initial guesses
Function pofdt125 iteration to compute p as a function of p and T in regions 1, 2 and 5
Function tofph5 iteration to compute T as a function of p and h in region 5
Function tofps5 iteration to compute T as a function of p and s in region 5
Function tofpst5 iteration to compute T as a function of p and s in region 5, with initial guess in T

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

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

Package Contents

Name	Description
`dofp13`	Density at the boundary between regions 1 and 3
`dofp23`	Density at the boundary between regions 2 and 3
`dofpt3`	Inverse iteration in region 3: (d) = f(p,T)
`dtofph3`	Inverse iteration in region 3: (d,T) = f(p,h)
`dtofps3`	Inverse iteration in region 3: (d,T) = f(p,s)
`dtofpsdt3`	Inverse iteration in region 3: (d,T) = f(p,s)
`fixdT`	Region limits for inverse iteration in region 3
`pofdt125`	Inverse iteration in region 1,2 and 5: p = g(d,T)
`tofph5`	Inverse iteration in region 5: (p,T) = f(p,h)
`tofps5`	Inverse iteration in region 5: (p,T) = f(p,s)
`tofpst5`	Inverse iteration in region 5: (p,T) = f(p,s)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.fixdT
Region limits for inverse iteration in region 3

Information

This icon indicates Modelica functions.

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

Inputs

Type	Name	Description
`Density`	`din`	Density
`Temperature`	`Tin`	Temperature

Outputs

Type	Name	Description
`Density`	`dout`	Density
`Temperature`	`Tout`	Temperature

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.dofp13
Density at the boundary between regions 1 and 3

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
`Density`	`d`	Density

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.dofp23
Density at the boundary between regions 2 and 3

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
`Density`	`d`	Density

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.dofpt3
Inverse iteration in region 3: (d) = f(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)
`Pressure`	`delp`	Iteration converged if (p-pre(p) < delp)

Outputs

Type	Name	Description
`Density`	`d`	Density
`Integer`	`error`	Error flag: iteration failed if different from 0

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.dtofph3
Inverse iteration in region 3: (d,T) = f(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
`Pressure`	`delp`	Iteration accuracy
`SpecificEnthalpy`	`delh`	Iteration accuracy

Outputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature (K)
`Integer`	`error`	Error flag: iteration failed if different from 0

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.dtofps3
Inverse iteration in region 3: (d,T) = f(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
`Pressure`	`delp`	Iteration accuracy
`SpecificEntropy`	`dels`	Iteration accuracy

Outputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature (K)
`Integer`	`error`	Error flag: iteration failed if different from 0

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.dtofpsdt3
Inverse iteration in region 3: (d,T) = f(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
`Density`	`dguess`	Guess density, e.g., from adjacent volume
`Temperature`	`Tguess`	Guess temperature, e.g., from adjacent volume
`Pressure`	`delp`	Iteration accuracy
`SpecificEntropy`	`dels`	Iteration accuracy

Outputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature (K)
`Integer`	`error`	Error flag: iteration failed if different from 0

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.pofdt125
Inverse iteration in region 1,2 and 5: p = g(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)
`Pressure`	`reldd`	Relative iteration accuracy of density
`Integer`	`region`	Region in IAPWS/IF97 in which inverse should be calculated

Outputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Integer`	`error`	Error flag: iteration failed if different from 0

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.tofph5
Inverse iteration in region 5: (p,T) = f(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
`SpecificEnthalpy`	`reldh`	Iteration accuracy

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature (K)
`Integer`	`error`	Error flag: iteration failed if different from 0

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.tofps5
Inverse iteration in region 5: (p,T) = f(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
`SpecificEnthalpy`	`relds`	Iteration accuracy

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature (K)
`Integer`	`error`	Error flag: iteration failed if different from 0

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.tofpst5
Inverse iteration in region 5: (p,T) = f(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
`Temperature`	`Tguess`	Guess temperature, e.g., from adjacent volume
`SpecificEntropy`	`relds`	Iteration accuracy

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature (K)
`Integer`	`error`	Error flag: iteration failed if different from 0

Package Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​InversesEfficient inverses for selected pairs of variables

Information

Package description

Package contents

Version Info and Revision history

Package Contents

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Inverses.​fixdTRegion limits for inverse iteration in region 3

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Inverses.​dofp13Density at the boundary between regions 1 and 3

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Inverses.​dofp23Density at the boundary between regions 2 and 3

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Inverses.​dofpt3Inverse iteration in region 3: (d) = f(p,T)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Inverses.​dtofph3Inverse iteration in region 3: (d,T) = f(p,h)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Inverses.​dtofps3Inverse iteration in region 3: (d,T) = f(p,s)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Inverses.​dtofpsdt3Inverse iteration in region 3: (d,T) = f(p,s)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Inverses.​pofdt125Inverse iteration in region 1,2 and 5: p = g(d,T)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Inverses.​tofph5Inverse iteration in region 5: (p,T) = f(p,h)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Inverses.​tofps5Inverse iteration in region 5: (p,T) = f(p,s)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Inverses.​tofpst5Inverse iteration in region 5: (p,T) = f(p,s)

Information

Inputs

Outputs

Package Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses
Efficient inverses for selected pairs of variables

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.fixdT
Region limits for inverse iteration in region 3

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.dofp13
Density at the boundary between regions 1 and 3

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.dofp23
Density at the boundary between regions 2 and 3

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.dofpt3
Inverse iteration in region 3: (d) = f(p,T)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.dtofph3
Inverse iteration in region 3: (d,T) = f(p,h)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.dtofps3
Inverse iteration in region 3: (d,T) = f(p,s)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.dtofpsdt3
Inverse iteration in region 3: (d,T) = f(p,s)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.pofdt125
Inverse iteration in region 1,2 and 5: p = g(d,T)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.tofph5
Inverse iteration in region 5: (p,T) = f(p,h)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.tofps5
Inverse iteration in region 5: (p,T) = f(p,s)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Inverses.tofpst5
Inverse iteration in region 5: (p,T) = f(p,s)