classAdiabaticThermodynamicModels

Information

Various models from Processes.Utilities.AdiabaticThermodynamicModels can be used to calculate the isentropic reference process required for an adiabatic process with a given isentropic efficiency, see Processes.Adiabatic:

• FullMedium - entropy-based model with no thermodynamic simplifications. Computes h_out_is = h(p_out, s_in).
• IdealGasConstantGamma - assumes ideal gas (p*v = R*T) with constant isentropic exponent gamma. Computes h_out_is = h(p_out, T_out_is), where T_out_is = T_in*(p_out/p_in)^((gamma-1)/gamma).
• PerfectGas - assumes perfect gas (p*v = R*T, cp = const.). Computes h_out_is = h_in + cp*(T_out_is - T_in), where T_out_is = T_in*(p_out/p_in)^((gamma-1)/gamma).
• IncompressibleFluid - assumes incompressible fluid (rho = const). Computes h_out_is = dp/rho_in + h_in.
• IsothermalReference - assumes constant temperature (T = const) for the isentropic reference process, which is true for incompressible fluid. It then computes h_out_is = h(p_out, T_in).

The most suitable adiabatic thermodynamic model depends on the chosen media model. Examples.AdiabaticThermodynamicModels compares the results for different media models.

Revisions

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