摘要
针对跨大气层飞行器外形,开展了超声速流动中的侧向喷流干扰问题研究。数值模拟了一定高度和飞行马赫数条件下不同喷流控制形式的干扰现象。结果表明:由于喷流与来流的相互作用,使流动变得相当复杂,相应的气动力发生变化,喷流所引起的气动干扰因子随高度的变化较为剧烈,但随攻角、马赫数的变化却比较平稳。喷流与来流的相互干扰随高度增加而变弱,在一定高度可以忽略这种干扰。
Lateral jet interaction in supersonic flow for trans-atmospheric vehicle is studied by numerical method in this paper, and different control methods by jet at different flow conditions are investigated numerically. Some conclusions are presented as following： because of the interaction effects between the oncoming freestream and the lateral jet flow, the flow structure becomes more complicated and the aerodynamics forces are also changed. The force and moment amplification factors, both of which are indexes of the effect of aerodynamic interaction, change dramatically with the altitude, but it is changed smoothly with the change of angle of attack. This interaction caused by the lateral jet interaction can be ignored at certain altitude.
出处
《空气动力学学报》
CSCD
北大核心
2006年第2期182-186,193,共6页
Acta Aerodynamica Sinica
基金
国家863航天高技术项目
关键词
跨大气层飞行器
喷流干扰
数值模拟
trans-atmospheric vehicle
jet interaction
numerical simulation
