modelSimpleAir

Information

This model demonstrates a comparison of different AdiabaticThermodynamicModels through an example compression using SimpleAir.

Simulation time acts as a proxy for the pressure ratio, which starts at one and increases linearly to pRatio = 2 at time = 1.

The figure below illustrates the resulting power, which directly correlates with the temperature difference:

The SimpleAir model extends PartialSimpleIdealGasMedium, representing a perfect gas (p*v = R*T, cp = const). Therefore, fullMedium, idealGasConstGamma, and perfectGas produce identical results. Note that a bugfix in SimpleAir was required for fullMedium to work, see https://github.com/DLR-SR/ThermofluidStream/pull/294 .
As also shown in Examples.AdiabaticProcess.CO2, incompressibleFluid approaches the same limit as the pressure ratio tends to zero, while isothermalReference is not suitable for ideal gases.

For more details about the underlying assumptions, see:
ThermofluidStream.Idealized.UsersGuide.AdiabaticThermodynamicModels.

Parameters

Components

Contents

Name	Description
Medium

Revisions

• 2026, by Raphael Gebhart (raphael.gebhart@dlr.de):
  Initial version.