Library Modelica.Media is a free Modelica package providing a standardized interface to fluid media models and specific media models based on this interface. A fluid medium model defines algebraic equations for the intensive thermodynamic variables used in the mass and energy balance of component models. Optionally, additional medium properties can be computed such as dynamic viscosity or thermal conductivity. Medium models are defined for single and multiple substance fluids with one and multiple phases.

A large part of the library provides specific medium models that can be directly utilized. This library can be used in all types of Modelica fluid libraries that may have different connectors and design philosophies. It is particularly utilized in the Modelica.Fluid library (1D therm-fluid flow components for single and multiple substance flow with one and multiple phases). The Modelica.Media library has the following main features:

This User's Guide has the following main parts:


MediumUsageMedium usage
MediumDefinitionMedium definition
ReleaseNotesRelease notes

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