Package Modelica.Media.Water.IF97_Utilities.BaseIF97.Transport
Transport properties for water according to IAPWS/IF97

Information

Package description

Package contents

Function visc_dTp implements a function to compute the industrial formulation of the dynamic viscosity of water as a function of density and temperature. The details are described in the document visc.pdf.
Function cond_dTp implements a function to compute the industrial formulation of the thermal conductivity of water as a function of density, temperature and pressure. Important note: Obviously only two of the three inputs are really needed, but using three inputs speeds up the computation and the three variables are known in most models anyways. The inputs d,T and p have to be consistent. The details are described in the document surf.pdf.
Function surfaceTension implements a function to compute the surface tension between vapour and liquid water as a function of temperature. The details are described in the document thcond.pdf.

Version Info and Revision history

First implemented: October, 2002 by Hubertus Tummescheit

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

Initial version: October 2002

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

Package Contents

Name	Description
`cond_dTp`	Thermal conductivity lam(d,T,p) (industrial use version) only in one-phase region
`surfaceTension`	Surface tension in region 4 between steam and water
`visc_dTp`	Dynamic viscosity eta(d,T,p), industrial formulation

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Transport.visc_dTp
Dynamic viscosity eta(d,T,p), industrial formulation

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`	`p`	Pressure (only needed for region of validity)
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known

Outputs

Type	Name	Description
`DynamicViscosity`	`eta`	Dynamic viscosity

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Transport.cond_dTp
Thermal conductivity lam(d,T,p) (industrial use version) only in one-phase region

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`	`p`	Pressure
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Boolean`	`industrialMethod`	If true, the industrial method is used, otherwise the scientific one

Outputs

Type	Name	Description
`ThermalConductivity`	`lambda`	Thermal conductivity

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Transport.surfaceTension
Surface tension in region 4 between steam and water

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
`SurfaceTension`	`sigma`	Surface tension in SI units

Package Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​TransportTransport properties for water according to IAPWS/IF97

Information

Package description

Package contents

Version Info and Revision history

Package Contents

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Transport.​visc_dTpDynamic viscosity eta(d,T,p), industrial formulation

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Transport.​cond_dTpThermal conductivity lam(d,T,p) (industrial use version) only in one-phase region

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Transport.​surfaceTensionSurface tension in region 4 between steam and water

Information

Inputs

Outputs

Package Modelica.Media.Water.IF97_Utilities.BaseIF97.Transport
Transport properties for water according to IAPWS/IF97

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Transport.visc_dTp
Dynamic viscosity eta(d,T,p), industrial formulation

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Transport.cond_dTp
Thermal conductivity lam(d,T,p) (industrial use version) only in one-phase region

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Transport.surfaceTension
Surface tension in region 4 between steam and water