文章基本信息

标题：Experimental and computational capture of high frequency oscillation induced by inception cavitation in submerged shear layer
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作者：Yuchuan Wang ; Lei Tan ; Xinyang Liu 等
期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：240
期号：6
页码：1-8
DOI：10.1088/1755-1315/240/6/062016
出版社：IOP Publishing
摘要：Cavitation is a peculiar phenomenon in the liquid medium flow, which is the phenomenon of that the local pressure in the flow field is lower than the local vaporization pressure. It's well-known that bubble collapse will cause high pressure oscillation in flow, which is the fundamental of the cavitation. In present study, 200 kHz high frequency pressure transducer is used to capture the pressure oscillation induced by inception cavitating bubble in submerged shear layer of axis-symmetric cavity. Consistent with boundary conditions in experimental measurement, large eddy simulation (LES) and Schnerr-Sauer (S-S) cavitation model are employed to simulate inception cavitation flow at condition Re=2×10⁵ and σ=0.59. The computational results show good agreement with experimental results. The cavitating bubble is slender, just like "rice grain shape", and the collapse of bubble induces the instantaneous and significantly pressure fluctuation in cavity.