Motion Characteristics of Cavitation Bubble near the Rigid Wall with the Driving of Acoustic Wave  

作　　者：叶曦 张阿漫 曾冬瑞 

机构地区：[1]College of Shipbuilding Engineering,Harbin Engineering University [2]College of Mathematics,Nanjing University

出　　处：《China Ocean Engineering》2015年第1期17-32,共16页中国海洋工程（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Grant No.51279038);the Excellent Young Science Foundation of the National Natural Science Foundation of China(Grant No.51222904)

摘　　要：The dynamics of cavitation bubble is analyzed in the compressible fluid by use of the boundary integral equation considering the compressibility. After the vertical incidence of plane wave to the rigid wall, the motion characteristics of single cavitation bubble near the rigid wall with initial equilibrium state are researched with different parameters. The results show that after the driving of acoustic wave, the cavitation bubble near the rigid wall will expand or contract, and generate the jet pointing to the wall. Also, the existence of the wall will elongate time for one oscillation. With the compressible model, the oscillation amplitude is reduced, as well as the peak value of inner pressure and jet tip velocity. The effect of the wall on oscillation amplitude is limited. However with the increment of initial vertical distance, the effect of wall on the jet velocity is from acceleration to limitation, and finally to acceleration again.The dynamics of cavitation bubble is analyzed in the compressible fluid by use of the boundary integral equation considering the compressibility. After the vertical incidence of plane wave to the rigid wall, the motion characteristics of single cavitation bubble near the rigid wall with initial equilibrium state are researched with different parameters. The results show that after the driving of acoustic wave, the cavitation bubble near the rigid wall will expand or contract, and generate the jet pointing to the wall. Also, the existence of the wall will elongate time for one oscillation. With the compressible model, the oscillation amplitude is reduced, as well as the peak value of inner pressure and jet tip velocity. The effect of the wall on oscillation amplitude is limited. However with the increment of initial vertical distance, the effect of wall on the jet velocity is from acceleration to limitation, and finally to acceleration again.

关 键 词：cavitation bubble rigid wall acoustic wave COMPRESSIBLE 

分 类 号：P731.2[天文地球—海洋科学]