Extended Quantitative Fluorescence Imaging for Multicomponent and Staged Injection into Supersonic Crossflows
Extended Quantitative Fluorescence Imaging for Multicomponent and Staged Injection into Supersonic Crossflows
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DOI：
10.2514/1.47318
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发表时间：
2010-07
影响因子：
1.9
通讯作者：
Hidemi Takahashi;Shuzo Ikegami;G. Masuya;M. Hirota
中科院分区：
文献类型：
--
作者：
Hidemi Takahashi;Shuzo Ikegami;G. Masuya;M. Hirota
将处理平面激光诱导荧光数据的荧光比率技术推广到非反应超音速混合流场中多组分和多注入构型中注入物摩尔分数和密度的定量成像。在马赫数为2.0的超声速气流中进行了单级或分级横向喷流混合流场的实验验证。气态氦和空气被用作注入剂。通过与气体采样数据的比较，证实了本方法获得的注射剂摩尔分数分布。用斜激波关系验证了密度分布。新方法适用于多级注入结构。还测试了脉冲二次注入的锁相测量。结果表明，该方法同样适用于脉冲注入。
The fluorescence ratio technique for processing planar laser-induced fluorescence data was extended for quantitative imaging of the injectant mole-fraction and density in multicomponent and multiinjection configurations in a nonreacting supersonic mixing flowfield. The method was experimentally validated in a mixing flowfield formed by single or staged sonic transverse injection into a Mach 2.0 supersonic air stream. Gaseous helium and air were used as injectants. Injectant mole-fraction distributions obtained by the present method were confirmed by comparison with gas-sampling data. Density distributions were validated with the oblique shock relation. The new method worked well for the multistaged injection configuration. Phase-locked measurement for the pulsed secondary injection was also tested. Results demonstrated the applicability of the new method to the pulse injection as well.