物体高速出水过程中的空化气液两相流流型研究  

Cavitating gas-liquid two-phase flow pattern in water exit of a high-speed body

作　　者：施红辉[1] 高聚瑞 贾会霞[1] 胡俊辉[1] 周杨洁[1] 陈波[1] 

机构地区：[1]浙江理工大学机械与自动控制学院流体工程系,杭州310018

出　　处：《中国科学院大学学报（中英文）》2016年第2期271-276,共6页Journal of University of Chinese Academy of Sciences

基　　金：浙江省自然科学基金(LQ13A020005;LQ13A020006;Z1110123;LY16A020003)资助

摘　　要：实验研究超空泡航行体出水时的气液两相流流型.观察到当航行体靠近自由面时,超空泡的崩溃、再产生以及与自由面相互作用等复杂力学过程.对于崩溃超空泡,其尾部由透明变为阴影,可能与尾射流的产生有关;但一般而言,超空泡的崩溃是整体性的.基于FLUENT软件并采用VOF方法,对超空泡出水过程进行数值模拟,数值计算结果与实验结果吻合良好.The flow patterns of cavitating gas-liquid two-phase flow in water exit have been studied experimentally. The complicated processes of cavity＇ s collapse, its re-generation, and cavity＇ s interaction with the free surface, etc. have been observed. For a collapsing cavity, its transparent tail becomes opaque, which may be related to the formation of re-entrant jet. However, in general, the cavity collapses entirely. By using the FLUENT software and VOF method, the flow field is simulated numerically and the results are in agreement with experiment.

关 键 词：超空泡 高速物体出水 高速摄影 流型 

分 类 号：O351.3[理学—流体力学]