modelTableBased

Information

This model evaluates different AdiabaticThermodynamicModels based on an exemplary pressurization of a table based incompressible fluid (Glycol47).

Simulation time represents the applied pressure difference, which increases linearly from zero to dp = 100 bar at time = 1.

The figure below shows the resulting power:

The isothermalReference (h_out_is = h(p_out, T_in)) and fullMedium (h_out_is = h(p_out, s_in)) formulations yield zero power because without modification, in the TableBased medium model, enthalpy is defined as a function of temperature only (Medium.enthalpyOfT = true), thereby neglecting the pressure-dependent flow work term dp/rho.

Setting Medium.enthalpyOfT = false, the pressure dependence of enthalpy is accounted for, and the flow work contribution is included, yielding the following results:

In this case, isothermalReference and incompressibleFluid yield identical results, while fullMedium differs by only 0.3%.

For more details regarding the underlying assumptions, refer to:
ThermofluidStream.Idealized.UsersGuide.AdiabaticThermodynamicModels .

Parameters

Components

Contents

Name	Description
Medium

Revisions

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