The Outflow of a Two-Phase Gas-Liquid Mixture from the Mixing Head of a Gas Generator when Starting a Liquid-Propellant Rocket Engine

This paper deals with the problems of mathematical simulation of the start-up of a liquid-propellant rocket engine (LPRE), which are associated with two-phase flows in the mixing heads (MH) of combustors and gas generators. The existing mathematical models are analyzed, which describe the processes of filling an MH with two-phase gas-liquid flows. A semiempirical mathematical model of description of such processes is suggested, which is based on the results of special experiments.