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首页> 外文期刊>Transactions of the Japan society for aeronautical and space sciences >Measurement Of Supersonic Injection Flowfield Using Acetone Plif
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Measurement Of Supersonic Injection Flowfield Using Acetone Plif

机译：用丙酮浆液测量超音速注入流场

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摘要

The structure of the flowfield formed by normal sonic injection into a Mach 1.8 air stream was investigated using acetone planar laser induced fluorescence (acetone PLIF). Parametric calculation of fluorescence intensity indicates that it represents molar concentration within ±2.5% error for the present experimental conditions. For the special situation of isentropic flow without any mixing, the Mach number can be deduced from the fluorescence intensity. Mach number distribution from PLIF data agreed well with that obtained from PIV measurement. The visual images of jet trajectories obtained from acetone PLIF are compared with those obtained from Mie scattering and indicate that the acetone PLIF produces a reasonable trajectory, while Mie scattering overestimates the jet penetration.
机译：使用丙酮平面激光诱导的荧光（丙酮PLIF）研究了通过正常声波注入1.8马赫空气流形成的流场结构。荧光强度的参数计算表明，对于当前的实验条件，它表示摩尔浓度在±2.5％的误差范围内。对于没有混合的等熵流的特殊情况，可以从荧光强度推导出马赫数。 PLIF数据的马赫数分布与PIV测量得到的马氏数分布非常吻合。从丙酮PLIF获得的射流轨迹的视觉图像与从Mie散射获得的射流轨迹的视觉图像进行了比较，表明丙酮PLIF产生了合理的轨迹，而Mie散射高估了射流的穿透力。

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