Two-phase gas-liquid flows

We have already indicated in the article Two-phase flows. General laws that, in many cases, industrial hydraulics have a two-phase aspect. If there is only one component, it is called a liquid-vapor mixture; if there is more than one, it is called a gas-liquid mixture. The gases making up the gas phase may be soluble in the liquid; the liquid phase may be made up of several miscible liquids.

We are generally interested in the mechanical and thermodynamic properties of the mixture for system performance evaluation, and in the electrical, optical and other properties for analysis and measurement.

This article describes the mechanical properties of the main isothermal flow configurations encountered in practice. The analysis is based on the general conservation theorems established in the article Two-phase flows. General laws . The notation has been simplified according to the table of notations and symbols, which also groups together the main working assumptions used in the presentation of calculation methods.