高超音速双斜面流动PIV和纹影法定量可视化研究

2017/02/07   下载量： 4 次

方案摘要

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应用领域 其他
检测样本 其他
检测项目
参考标准 暂无

采用LaVision公司的PIV系统。激光器能量为双脉冲400毫焦。对7马赫高超音速风洞中的15度-45度双斜面流场进行了测量。获得了流场中激波的空间分布的详细信息。

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方案详情

A Mach 7 flow over a 15o-45o double ramp was investigated by means of PIV and high-speed
schlieren imaging. The flow field features an Edney type V shock-shock interaction. Downstream of
the interaction a wall-jet is observed that is the result of the momentum difference in the flow
passing through the curved shock or through the series of oblique shocks in the interaction. Vortical
structures were observed in the wall-jet shear layer, that were generated at a frequency of 40 kHz.
Finally, the unsteadiness of the shock structure was studied and it was found that the leading edge
shock was stationary while both the separation and curved shocks showed appreciable motion. The
movement of these two shocks was found to be uncorrelated.

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下一篇 基于体视激光诱导荧光（VLIF）的单次3D火焰诊断

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北京欧兰科技发展有限公司
金牌会员 丨 第17年
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