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针对高空喷管地面试验时产生流动分离的现象，用Ｂｅａｍ －Ｗａｒｍ ｉｎｇ 近似因式分解法求解薄层Ｎ－Ｓ方程，对分离流场进行数值模拟。预示了分离点的位置以及喷管壁面压强分布等，可以为高空发动机地面试车提供参考， 并为进一步研究分离的影响因素打下基础
Aimed at the phenomena of flow separation during the high-altitude nozzle test, the N-S equation was solved by the Beam-Warming approximate factorization method and the numerical simulation of the separation flow field was carried out. Indicating the location of the separation point and the distribution of pressure on the wall of the nozzle can provide a reference for the test run of the high altitude engine ground and lay the foundation for further study on the influencing factors of the separation