Abstract: In the design of  filmcooled bipropellant thruster, the numerical simulation of the combustion chamber is a necessary step. In this paper, process of atomizing of the liquid propellant, breaking up of droplets, liquid film formation are taken into account, and the EDC combustion model and the realizable kε turbulent flow model are selected. Distributions of droplets, liquid film and static temperature are obtained by using the numerical simulation. At last, based on the analysis of simulation results, the working process in combustion chamber are interpreted, and two conclusions on the liquid film cooling are derived.

Key words: bipropellant, liquid film cooling, combustion chamber, numerical simulation