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首页> 外文期刊>Experiments in Fluids: Experimental Methods and Their Applications to Fluid Flow >Instantaneous measurement of two-dimensional temperature distributions by means of two-color planar laser induced fluorescence (PLIF)
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Instantaneous measurement of two-dimensional temperature distributions by means of two-color planar laser induced fluorescence (PLIF)

机译：利用双色平面激光诱导荧光（PLIF）瞬时测量二维温度分布

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摘要

We present a noninvasive technique to measure instantaneously two-dimensional temperature distributions in liquid flows by means of two-color planar laser induced fluorescence (PLIF) of rhodamine B. This technique allows absolute temperature measurements by determining the relative intensities on two adequate spectral bands of the same dye and a reference measurement at a known temperature. Demonstration measurements on a heated turbulent jet injected into a coflow at ambient temperature are presented. The mean temperature field is investigated, as well as the temperature fluctuations. The results are compared to those obtained by means of a usual single-color PLIF technique.
机译：我们提出了一种非侵入性技术，通过罗丹明B的两色平面激光诱导荧光（PLIF）来测量液体流中的瞬时二维温度分布。该技术可通过确定两个适当光谱带上的相对强度来进行绝对温度测量。相同的染料和已知温度下的参考测量值。给出了在环境温度下注入到同流中的加热湍流射流的演示测量结果。研究了平均温度场以及温度波动。将结果与通过常规单色PLIF技术获得的结果进行比较。

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