关键词: 火箭发动机喷管;烧蚀;温度分布;耦合模式;计算

Abstract: This paper describes a coupling calculation method for ablation and temperature field on SPRM nozzle with silica-phenolics. A unsteady liquid layer model is considered for calculation.The temperature field is treated as one dimensional in a cylindric coordinates,transient heat-conduction problem. By using coordinates transformation, the physical plane with moving boundary resulting from ablation is turned into the rectangular coordinates calculating plane with fixed boundary.Finally, a more accurate calculation result is obtative with a full consideration of the coupling term in both ablative equation and heat-conduction equation.

Key words: Rocket engine nozzle;Ablation;Temperature distribution;Coupledmode;Calculation