超声速混合层增长速度定量测量与比较  

The quantificational measurement of supersonic mixing layer growth rate

作　　者：赵玉新[1] 易仕和[1] 田立丰[1] 何霖[1] 程忠宇[1] 

机构地区：[1]国防科技大学航天与材料工程学院,长沙410073

出　　处：《实验流体力学》2009年第3期100-103,共4页Journal of Experiments in Fluid Mechanics

基　　金：自然科学基金(项目批准号:10672178)

摘　　要：为研究超声速混合层增长速度,在自行设计的超声速湍流混合风洞中,分别采用常规连续光源与脉冲激光光源完成相应的纹影和NPLS实验。采用对比度调整和边缘检测方法对实验图片进行处理,得到了适合于定量测量混合层增长速度的图像。给出了相应的增长速度测量方法,并对相应的实验图像进行了定量测量与比较。In order to study the growth rate of supersonic mixing layer, schilieren and NPLS experiments were accomplished in supersonic turbulence mixing wind tunnel with regular continuous light source and laser pulse. The experimental images were processed by contrast adjustment and edge detection methods, then the growth rate of mixing layer can be measured. The methods of measuring growth rate of supersonic mixing layer were proposed, by which quantificational measurenlent and comparison of experimental images were carried out.

关 键 词：纹影 NPLS 超声速混合层 增长速度 

分 类 号：V211.7[航空宇航科学与技术—航空宇航推进理论与工程]