入射压力对连续超声速射流对撞的影响  

Influence of Incident Pressure on Continuous Supersonic Jet Collision

作　　者：赵坤[1,2] 刁志成 何立明 曾昊[1] 张胜利[2] 谢祥勇 ZHAO Kun;DIAO Zhicheng;HE Liming;ZENG Hao;ZHANG Shengli;XIE Xiangyong(Aeronautics Engineering College,Air Force Engineering University,Xi'an 710038,China;No.95896 Unit,Hebei Cangzhou 061700,China;No.93716 Unit,Tianjin 300000,China;No.94855 Unit,Zhejiang Quzhou 324000,China)

机构地区：[1]空军工程大学航空工程学院 [2]95896部队 [3]93716部队 [4]94855部队

出　　处：《弹箭与制导学报》2018年第5期55-59,共5页Journal of Projectiles,Rockets,Missiles and Guidance

基　　金：国家自然科学基金(91541109;51406234)资助.

摘　　要：为了研究连续超声速射流入射压力对射流对撞的影响规律,以空气为介质开展了不同入射压力下自由空间内连续超声速射流对撞的实验和数值模拟,对比分析了射流对撞中心的动态压力和辐射噪声。结果表明:随着射流入射压力的增大,射流对撞的动态压力幅值逐渐增大,频率也逐渐增大,同时射流对撞引起的啸叫频率逐渐增大;增大射流入射压力有利于提高射流对撞效果。In order to research the influence of the free supersonic jet pressure on jet collision,taking air as media,the experiment and numerical simulation of continuous supersonic jet collision in free space under different incident pressure were carried out.and the dynamic pressure and radiation noise of the jet collision center were analyzed.The results show that the dynamic pressure amplitude and the frequency of jet collision gradually increase as the injection pressure increases.At the same time the frequency of the noise caused by jet collision increases.The increase of the incident pressure can improve the effect of jet collision.

关 键 词：两级脉冲爆震发动机 自由超声速射流 入射压力 对撞 实验和数值模拟 

分 类 号：V231.2[航空宇航科学与技术—航空宇航推进理论与工程]