| Characteristics of a bubble jet near a vertical wall |
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| 作者姓名： | 张阿漫 姚熊亮 李佳 |
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| 作者单位： | College of Shipbuilding Engineering Harbin Engineering，College of Shipbuilding Engineering Harbin Engineering，College of Shipbuilding Engineering Harbin Engineering，Harbin 150001 China，Harbin 150001 China，Harbin 150001 China |
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| 基金项目： | 国家自然科学基金，The Specialized Research Fund for theDoctoral Program of Higher Education of China，The Defence Advance Research Program of Science and Technology of Ship Industry，哈尔滨工程大学校科研和教改项目 |
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| 摘 要： | 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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| 关 键 词： | 数字模拟技术 泡沫喷射 布莱克准则 分界线 航海技术 |
| 收稿时间： | 3 November 2008 |
Characteristics of a bubble jet near a vertical wall |
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| A-man Zhang,Xiong-liang Yao,Jia Li.Characteristics of a bubble jet near a vertical wall[J].Journal of Marine Science and Application,2008,7(1):1-6. |
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| Authors: | A-man Zhang Xiong-liang Yao Jia Li |
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| Institution: | 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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