【摘 要】
：
本文报导了利用双像效应测相干光线分离距离的一种实验方法,使得在缺少有关光学参数情况下,仍可进行差分干涉图的定量计算。采用激光差分干涉仪对敷设在封闭槽盒中电缆群的自
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本文报导了利用双像效应测相干光线分离距离的一种实验方法,使得在缺少有关光学参数情况下,仍可进行差分干涉图的定量计算。采用激光差分干涉仪对敷设在封闭槽盒中电缆群的自然对流换热进行了实验研究,得到了沿电缆表面局部 Nu 数的分布,与无限空间相同条件和相同工况时电缆表面的平均 Nu 数相比,约降低15%。
In this paper, we report an experimental method for measuring the separation distance of coherent light using the double-image effect, which enables the quantitative calculation of differential interferograms in the absence of relevant optical parameters. A laser differential interferometer was used to study the natural convective heat transfer of the cable group in a closed tank. The distribution of local Nu numbers along the cable surface was obtained. The average Nu of the cable surface under the same conditions with infinite space and the same working condition Compared to the number of about 15% lower.
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