【摘要】 在抛物化假定基础上，从固体火箭发动机无烟、少焰研究需要出发，对喷管的内、外流场进行了数值模拟。考虑了化学平衡流和气／固两相流两种状态。在喷管内流场的计算中，采用隐式Ｂｅａｍ─Ｗａｒｍｉｎｇ格式对喷管进行空间推进求解；在喷流流场的计算中，用系数矩阵分裂方法对流场进行数值模拟。不论是内流场，还是喷流流场，燃烧产物的平衡组分都用布林克莱法进行求解，粒子运动参数都用特征线法进行求解。其中部分计算结果同实验及他人的计算结果进行了对比，两者吻合良好。更多还原

【Abstract】 Based on the parabolic assumption, in this paper, the internal flow and external plume flow of nozzle have been numerically simulated to study the non-smoke, less-flame problem for solid rocket engine-A chemical equilibrium flow and gas-solid two-phase flow are considered. For internal flow of nozzle, the implicit Beam-Warming scheme has been used to simulate the flow field by space marching and for the plume flow field, a method of coefficient matrix splitting has been used. Both the internal and external flow fields, the Braklin method has been used to compute the constituent of combustion products, and the particle characteristic parameters are solved by using the characteristic line method. Some computed results presented here are in good agreement with the experimental and other computational data.更多还原