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The formation of a cumulative jet during the collapse of a vapor bubble in a subcooled liquid formed as a result of laser heating
International Journal of Heat and Mass Transfer ( IF 5.2 ) Pub Date : 2020-04-01 , DOI: 10.1016/j.ijheatmasstransfer.2019.119286
V.M. Chudnovskii , A.A. Levin , V.I. Yusupov , M.A. Guzev , A.A. Chernov

Abstract This paper presents the results of an experimental study of boiling of substantially subcooled liquid initiated by its local heating through the concentrated laser radiation transmitted to the working volume via a thin optical fiber. We study in detail the evolution of a vapor-gas bubble formed near the surface of an optical fiber tip. As the bubble collapses, a liquid seal is formed, which leads to generation of a hot submerged jet directed from the fiber tip into the liquid. We attempt to explain the cumulative nature of this jet and provide estimates of its velocity that appear to be in good agreement with the experiment.

中文翻译:

由于激光加热而形成的过冷液体中的蒸汽泡破裂期间累积射流的形成

摘要 本文介绍了对基本过冷液体的沸腾进行实验研究的结果,该液体通过通过细光纤传输到工作体积的集中激光辐射进行局部加热。我们详细研究了光纤尖端表面附近形成的蒸汽气泡的演变。当气泡破裂时,形成液体密封,这导致产生从光纤尖端引导到液体中的热浸没射流。我们试图解释这种射流的累积性质,并提供与实验非常吻合的速度估计值。
更新日期:2020-04-01
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