.Modelica.Media.Examples

Information

Examples

Physical properties for fluids are needed in so many different variants that a library can only provide models for the most common situations. With the following examples we are going to demonstrate how to use the existing packages and functions in Modelica.Media to customize these models for advanced applications. The high level functions try to abstract as much as possible form the fact that different media are based on different variables, e.g., ideal gases need pressure and temperature, while many refrigerants are based on Helmholtz functions of density and temperature, and many water properties are based on pressure and specific enthalpy. Medium properties are needed in control volumes in the dynamic state equations and in many thermodynamic state locations that are independent of the dynamic states of a control volume, e.g., at a wall temperature, an isentropic reference state or at a phase boundary. The general structure of the library is such that:

A small library of generic volume, pipe, pump and ambient models is provided in Modelica.Media.Examples.Tests.Components to demonstrate how fluid components should be implemented that are using Modelica.Media models. This library is also used to test all media models in Modelica.Media.Examples.Tests.MediaTestModels.

Contents

NameDescription
SimpleLiquidWaterExample for Water.SimpleLiquidWater medium model
IdealGasH2OIdealGas H20 medium model
WaterIF97WaterIF97 medium model
MixtureGasesTest gas mixtures
MoistAirExample for moist air
PsychrometricDataProduces plot data for psychrometric charts
TwoPhaseWaterExtension of the StandardWater package
ReferenceAirExamples for detailed dry air and moist air medium models
R134aExamples for R134a
SolveOneNonlinearEquationDemonstrate how to solve one non-linear algebraic equation in one unknown
UtilitiesFunctions, connectors and models needed for the media model tests

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