Experimental investigation on upstream-injection interaction with a scramjet cavity flameholder  

作　　者：Ming-Bo Sun Shun-Ping Zhang Yan-Hui Zhao Yu-Xin Zhao Jian-Han Liang 

机构地区：[1]Science and Technology on Scramjet Laboratory,National University of Defense Technology

出　　处：《Chinese Science Bulletin》2014年第14期1568-1574,共7页

基　　金：supported by Fok Ying Tung Education Foundation(131055);Jieqing Fund of the National University of Defense Technology(CJ13-01-01);the Fund of Out-standing Doctoral Dissertation from the Education Ministry of China(201258)

摘　　要：The study has evaluated the coherent structures and the velocity field of gaseous transverse jet upstream of a scramjet flameholder in a supersonic turbulent flow.The high spatiotemporal resolution coherent structures of the jet plume/wakes and the cavity shear layer were obtained by utilizing the nanoparticle-based planar laser scattering technique.Compared to the no upstream injection case,the cavity shear layer downstream of the jet shows significant mass exchange with mainstream.The particle image velocimetry velocity field and the velocity profiles demonstrated that the interaction intensity of the cavity shear layer with the upstream injection is further enhanced as the injection stagnation pressure increases.The study has evaluated the coherent structures and the velocity field of gaseous transverse jet upstream of a scramjet flameholder in a supersonic turbulent flow. The high spatiotemporal resolution coherent structures of the jet plume/wakes and the cavity shear layer were obtained by utilizing the nanoparticle-based planar laser scattering technique. Compared to the no upstream injection case, the cavity shear layer downstream of the jet shows significant mass exchange with mainstream. The particle image veloc- imetry velocity field and the velocity profiles demonstrated that the interaction intensity of the cavity shear layer with the upstream injection is further enhanced as the injection stagnation pressure increases.

关 键 词：超燃冲压发动机 相互作用强度 火焰稳定器 上游 实验 激光散射技术 横向喷流 相干结构 

分 类 号：TK403[动力工程及工程热物理—动力机械及工程]