Experimental study on characteristics of bubble pulsation near symmetric boundary
WANG Shi-ping1.2，ZHANG A-man1，WU Chao1.3
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College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China
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History+
Received
Revised
Published
2013-05-06
2013-10-16
2014-10-25
Issue Date
2014-10-25
Abstract
Bubble collapse under different boundary conditions has long been a hot topic in research on bubble dynamics. The Bubble motions between two parallel plates and in cylinder region are studied experimentally with low-voltage electric spark bubble generator and high-speed camera. Bubbles are generated at the center of the region to ensure its symmetric motion. Between parallel plates, the bubble will be teared apart from the middle into two smaller bubbles, with the jets of both directed towards the plates. As the dimensionless distance between two plates decreases, the following three motion patterns are observed: rebound and split, adverse jet, and connected jet. In cylinder and square cylinder regions, the bubble evolves into a red blood cell shape and a ring-bubble is generated at the end of jetting with its jet points towards cylinder wall. The study on bubble motion characteristics presented here could be useful references for researches on collapse patterns near different types of boundaries.
WANG Shi-ping.;ZHANG A-man;WU Chao..
Experimental study on characteristics of bubble pulsation near symmetric boundary[J]. Journal of Vibration and Shock, 2014, 33(20): 118-122
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