关键词: 氢氧发动机;推力室;火箭推进剂喷嘴;温度分布;传热;数值分析;计算

Abstract: In this paper, three-dimensional heat conduction finite difference equations for inequable length grid elements are derived from the partial differential equations. General-purpose heat transfer numerical analysis are carried out to the injector face plate in hydrogen/oxygen propellant rocket engines. Numerical analyses for the temperature distributions in the injector face plate of the experimental combustion chamber are proven out. The temperature distributions in the injector face plate of gas generator in hydrogen/oxygen propellant rocket engine are obtained, from which it is derived that freezing is unavoidable for the present construction. The temperature distributions in a new injector face plate little different from the present one in construction but prevented from freezing, is predicted. This analysis process is available not only for gas generators but for combustion chambers as well, providing an available method in heat transfer to the injector designs.

Key words: Hydrogen oxygen engine;Thrust chamber;Rocket propellant injector;Temperature distribution;Heat transfer;Numerical analysis;Computation