二维过渡区喷流干扰流场的DSMC/EPS仿真

推进技术 ›› 2003, Vol. 24 ›› Issue (6): 495-499.

二维过渡区喷流干扰流场的DSMC/EPS仿真

李洁,陈伟芳,任兵

国防科技大学航天与材料工程学院湖南长沙410073;国防科技大学航天与材料工程学院湖南长沙410073;国防科技大学航天与材料工程学院湖南长沙410073

发布日期:2021-08-15
基金资助:
国家自然科学基金资助项目 (1 990 2 0 2 1 )。

Numerical study of jet interaction flows in the two-dimensional transitional regime by DSMC/EPS method

Inst. of Aerospace and Material Engineering, National Univ. of Defence Technology, Changsha 410073, China;Inst. of Aerospace and Material Engineering, National Univ. of Defence Technology, Changsha 410073, China;Inst. of Aerospace and Material Engineering, National Univ. of Defence Technology, Changsha 410073, China

Published:2021-08-15

摘要/Abstract

摘要： 应用DSMC/EPS混合算法,数值模拟过渡区有RCS横向喷流干扰的二维有限平板高超声速流场,分析了流场结构、分离形态及物面气动系数分布等特性。结果表明,不同Knudsen数下,喷流干扰流场存在差异,过渡区中的稀薄气体效应得以体现,证明了DSMC/EPS混合算法是研究稀薄/连续混合区域高超声速流动的有效方法。

关键词: 喷流干扰;平板;稀薄气体;组合算法;数值仿真

Abstract: A hybrid Direct Simulation Monte Carlo/Equilibrium Particle Simulation (DSMC/EPS) method was applied to provide solutions for RCS transverse jet from two-dimensional flat plate interacting with rarefied external flows in the transitional regime. The flow field and surface properties were analyzed in details. The results show that the interacting flow fields are very different on the varied Knudsen parameter, the rarefied gas effects in the transitional regime are verified, and the hybrid DSMC/EPS method is appropriate for studying the hypersonic flow in the transitional-rarefied regime.

Key words: Jet interference;Flat plate;Rarefied gas;Combinatorial algorithm;Numerical simulation

李洁,陈伟芳,任兵. 二维过渡区喷流干扰流场的DSMC/EPS仿真[J]. 推进技术, 2003, 24(6): 495-499.