Observation of kerosene injected from a cavity into a supersonic airstream
Kerosene-PLIF and high-speed schiliren are used to visualize flow-field of kerosene injected from a single injector at low plate and cavity walls.PLIF and high-speed schliren images are obtained.The results show that vortex or three-dimensional surface waves appear along boundary of fuel jet plume.With increasing dynamic ratio qj,start point of surface waves move upwards to the injector.In this paper,flapping flows at rear ramp of a cavity lead to oscillation of shock waves generated by shear layer upwards the cavity and separation bubble near shock reflection point on upper walls.Wavy rear ramp of cavity reduces shock strength and separation bubble disappears.PLIF images provide accurate distribution of fuel mixing and penetration depth in contrast to high-speed photography and schliren.
supersonic flow atomization schliren PLIF Introduction
Shengli XU Liseng FEI
School of Aerospace Engineering,Tsinghua University,BEIJING 100084,China
国际会议
2014 Asia-Pacific International Symposium on Aerospace Technology(2014亚太航空航天技术学术会议)
上海
英文
1-6
2014-09-24（万方平台首次上网日期，不代表论文的发表时间）