凹面腔内二维激波会聚特性研究  

Investigation on two-dimensional shock wave focusing

作　　者：曾昊[1,2] 陈鑫[1] 何立明[1] 吴春华 

机构地区：[1]空军工程大学,陕西西安710038 [2]空军西安飞行学院,陕西西安730000

出　　处：《空气动力学学报》2013年第3期316-320,共5页Acta Aerodynamica Sinica

摘　　要：为了研究凹面腔内二维激波会聚的特性,设计、建立了二维激波会聚冷态实验系统,进行了二维激波会聚冷态实验,结果表明:当射流入口宽度增大时,相同射流入射压力下,喷入凹面腔内的射流强度增大,导致凹面腔内的激波会聚强度增强,从而压力脉动幅值增大,频率也随之增大。数值模拟了二维冷态激波会聚过程,从模拟结果中的压力和频率上看,模拟结果与实验结果基本上是吻合的。In order to study of two-dimensional investigate two-dimensional shock wave focusing characteristics, an experimental shock wave focusing was carried out on a two-dimensional shock wave focusing device, and a relevant numerical simulation was also done. Effects of the jet width and pressure on airflow oscillation frequency were acquired. An increased jet intensity led to an increased shock wave focusing inten- sity, and thus an increased pressure fluctuation and also an increased oscillation frequency. The simulation results were consistent with the experimental results.

关 键 词：两级脉冲爆震发动机 爆震波 激波会聚 激波 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]