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由于缺乏有效的实验手段， 目前的ＳＲＭ 颗粒轨道模型很不完善， 其中粒子的加入边界条件完全是建立在人为假设的基础上。针对这种情况， 发展了一种以实验为基础的确定凝相粒子加入边界条件的方法， 首先利用ＲＴＲ技术对实验发动机热试车条件下凝相粒子的运动进行实验研究， 通过图象处理技术获得粒子的运动轨迹， 然后采用轨道模型法计算实验条件下凝相粒子的运动轨迹， 通过轨迹反推法给出了粒子加入边界条件。
Due to the lack of effective experimental methods, the current SRM particle orbit model is not perfect, in which the particle boundary conditions are completely based on human assumption. In view of this situation, an experimentally-based method for determining the boundary condition of the condensed-phase particles has been developed. First, the experimental study of the motion of the condensed-phase particles under the thermal test of the experimental engine was carried out by using the RTR technique and obtained by the image processing technology Particles trajectory, and then use the trajectory model method to calculate the kinematic trajectory of the condensate particles under the experimental conditions, by particle trajectory backstepping method to join the boundary conditions.