喷流制冷的高超声速后台阶流场气动光学效应研究  

Aero-Optical Effects of Hypersonic Backward Facing Step with Film Cooling

作　　者：邢博阳 杨俊彦 余跃 张斌[1] XING Boyang;YANG Junyan;YU Yue;ZHANG Bin(School of Aeronautics and Astronautics,Shanghai Jiao Tong University,Shanghai 200240;Shanghai Aerospace Control Technology Institute,Shanghai 201109)

机构地区：[1]上海交通大学航空航天学院,上海200240 [2]上海航天控制技术研究所,上海201109

出　　处：《飞控与探测》2020年第6期57-65,共9页Flight Control & Detection

基　　金：上海航天技术研究院-上海交大航天先进技术联合研究中心资助项目(USCAST2016-06)。

摘　　要：近年来,临近空间的军事应用价值受到了越来越广泛的关注。为了研究高超声速飞行器典型后台阶结构的气动光学问题,采用研究稀薄气体动力学的直接模拟蒙特卡洛算法(DSMC)研究了临近空间在不同喷流控制下的后台阶流动特性,并采用光线追踪方法研究了在不同流动控制下流场的气动光学效应。计算结果表明,随着飞行高度增加,壁面热流将增加,同时气动光效应将变弱。在四种喷流冷却方式中,喷流方式A的冷却效果最好,同时没有增加气动光学效应,B、D方式具有一定的冷却效应,但使得气动光学效应更加严重。In recent years,the military application value of near space has received more and more attention.In order to study the aero-optical problems of the typical backward step structure of hypersonic aircraft,the direct simulation monte carlo(DSMC)method,which is a simulation method of rarefied gas dynamics,is used to study the flow characteristics of the backward step under different jet control in near space,and the ray-tracing method is used to study the aero-optical effect of flow field under different flow control.The calculation results show that as the flying height increases,the temperature of wall increases,and the aero-optical effect becomes weak.Among the four jet cooling methods,jet method A has the best cooling effect without increasing the aero-optical effect.Method B and D have certain cooling effects but make the aero-optical effect more serious.

关 键 词：后台阶 DSMC 气动光学效应 喷流制冷 

分 类 号：TN911.73[电子电信—通信与信息系统] TP391.9[电子电信—信息与通信工程]