Fluid properties

The model adopt CoolProp to calculate thermophysical properties of the given fluid, specifically, enthalpy-entropy calls:

\[[\rho, \mu, p, T, a] = f(h, s).\]

To calculate the total property, the total enthalpy is adopted:

\[[\rho_0, \mu_0, p_0, T_0, a_0] = f(h_0, s).\]

Similarly, the total relative enthalpy is adopted to calculate the total relative property:

\[[\rho_{0, \mathrm{rel}}, \mu_{0, \mathrm{rel}}, p_{0, \mathrm{rel}}, T_{0, \mathrm{rel}}, a_{0, \mathrm{rel}}] = f(h_{0, \mathrm{rel}}, s).\]