Experimental study on interaction between a cavitation bubble and an oil layer–water interface

Author:

Zhong Yuying1,Zhao Yang1,Gao Xiaoyan1ORCID,Bao Fubing1ORCID

Affiliation:

1. Zhejiang Provincial Key Laboratory of Flow Measurement Technology, China Jiliang University , Hangzhou 310018, China

Abstract

The interaction between a single laser-induced cavitation bubble and an oil layer–water interface is experimentally studied through high-speed photography technology. When oscillating near an oil layer–water interface, the bubble always migrates away from the interface with a jet pointing at the same direction. Three different motions of the interface are observed: interface experiencing subtle disturbance (case 1), interface presenting a deformation resembling an inverted hill (case 2), and interface developing a jet piercing the bubble (case 3). The effect of oil layer thickness on the bubble centroid migration and the inverted hill-shaped interface deformation are investigated as well. With a decreasing dimensionless bubble-interface distance, the effect of the oil layer on the bubble oscillation becomes more significant. In case 2 and case 3, the presence of the oil layer always weakens the migration distance of the bubble centroid.

Funder

National Natural Science Foundation of China

Fundamental Research Funds for the Provincial Universities of Zhejiang

Publisher

AIP Publishing

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