The challenge? Most designs rely on semi-empirical models from pioneers like Keenan, Neumann, or ESDU (Engineering Sciences Data Unit).
For supersonic design, use isentropic relations. gas ejector design calculation xls
Pressure and temperature of the driving fluid. The challenge
[ V_m = \sqrt\frac2 \gamma_m\gamma_m - 1 R_m T_m \left[1 - \left(\fracP_sP_m\right)^\frac\gamma_m - 1\gamma_m\right] ] gas ejector design calculation xls
Even the best has boundaries:
Here lies the heart of the . Most spreadsheets implement a 1D constant-pressure or constant-area mixing model.