Characteristics of a bubble jet near a vertical wall |
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Authors: | A-man Zhang Xiong-liang Yao Jia Li |
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Affiliation: | College of Shipbuilding Engineering, Harbin Engineering, Harbin 150001, China |
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Abstract: | A numerical model of a coupled bubble jet and wall was built on the assumption of potential flow and calculated by the boundary integral method. A three-dimensional computing program was then developed. Starting with the basic phenomenon of the interaction between a bubble and a wall, the dynamics of bubbles near rigid walls were studied systematically with the program. Calculated results agreed well with experimental results. The relationship between the Bjerknes effect of a wall and characteristic parameters was then studied and the calculated results of various cases were compared and discussed with the Blake criterion based on the Kelvin-impulse theory. Our analyses show that the angle of the jet's direction and the pressure on the rigid wall have a close relationship with collapse force and the bubble's characteristic parameters. From this, the application range of Blake criterion can be determined. This paper aims to provide a basis for future research on the dynamics of bubbles near a wall. |
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Keywords: | bubble jet rigid wall boundary integral Bjerknes effect Blake criterion |
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