摘要
采用基于Favre平均的三维N-S方程,对燃气推力矢量控制发动机全内流场进行了数值仿真,研究了燃气引流、燃气二次喷射及与发动机内主流相互作用等复杂流动。研究结果表明,流场内包含复杂的涡系结构和波系结构,还存在着边界层与激波的相互干扰、自由剪切层、激波、膨胀波和大尺寸分离。通过数值模拟,对试验中的异常现象进行了定性分析,得出了与试验一致的结论。
The whole internal flow-field in hot gas thrust vector control motor was numerically simulated by means of three-dimensional average Favre equations. Gas conduction, secondary hot gas injection as well as their interaction with the main flow of the motor were investigated respectively. The results show that there exist complex vortex system and wave system in flow field, as well as interference of boundary layer and shockwave, free shearing layer,shockwave ,rarefaction wave and heavy gauge separation. Some abnormal phenomena in the experiment were qualitatively analyzed by numerical simulation, and the conclusion agrees well with experimental results.
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2007年第3期191-195,共5页
Journal of Solid Rocket Technology
基金
武器装备预研基金(9140A28010806KG0189)
国家863高新技术项目资助(2005AA765030)
关键词
燃气二次喷射
推力矢量控制
数值模拟
secondary hot gas injection
thrust vector control
numerical simulation
