关键词: 固体推进剂;燃烧稳定性;模型;数值分析

Abstract: To estlmate posslble dynamic effects,numerical solutions for a typical thermal-wavecombustlon model(a modified KTSS)are obtained for a series of example cases. Onesignificant resultis that the effect of a dynamic factor,related to the magnitude of dp/dt,do not generate and unstableburning rate response. Another interesting result is that the larger the heat release parameter(H) isthe larger the temperature or buning rate responses. Intrinsic burning rate instability can occur forrelatively large values of H. A stable regime mathematically to this model was misleading because ofnumerlcal difficulty. Exact numerical solutions of the present model have confirmed that the burningrate amplitude increases with increasing H for B= 1 and m = 6. The burning rate with oscillationapproaches apn when H<1. 0. However, when 1<H< 1. 045, the state of burning rate is composed ofrepeated, amIJlitude spikes even though the numerical solution remains finite. When H> 1. 044, anunstable burnlng rate resPonse is generated.

Key words: Solid propellant;Combustion stability;Mokiel;Numerical analysis