Two-Phase Critical Flow at Low Qualities Part II: Analysis

A model is developed to predict one-component two-phase critical flow for equilibrium qualities less than 0.02. The formulation approximates the real non-equilibrium processes by thermodynamic equilibrium paths. The deviations from equilibrium are incorporated in one function which can be determined experimentally. The model exhibits good agreement with the experimental data for exit pressures from 50 to 150 psia.