关键词: 非平衡流;二相流;数值解;无喷管火箭发动机

Abstract: The numerical methods for solving governing equations of anisen-tropic one-dimensional steady flow have been discussed in many literaries.But most methods presented cann’t be applied to anisentropic flow with singularity at M (Mach number) = 1,and cann’t ensure that the solution is unique.In this paper, the numerical method is presented for solving go-verning equations with singularity at M=1, Because the throat condition is used in computation, the numerical result is unique.The accuracy analysis of model equations shows that the numerical results are consistent with the accurate results except for singular point,and the relative error is less then 0.3% in the vicinity of singular point. The interior ballistic calculation of nozzleless motor is demonstrated by using the presented method in this paper.

Key words: Non-equilibrium flow;Two-phase flow;Numerical Solution;Nozz-leless rocket engine