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| The interaction of three-dimensional bubble and rigid wall |
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| DOI：10.7511/jslx20086150 |
| KeyWord:bubble,rigid wall,potential-flow theory,boundary integral,kelvin impulse |
| WANG Shi-ping YAO Xiong-liang ZHANG A-man SUN Shi-li |
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| Abstract: |
| The dynamics of three-dimensional bubble near a rigid wall is investigated in this paper.Based on potential-flow theory,the model of three-dimensional bubble is created,and Laplace equation is solved by boundary integral method,obtaining the deformation and location of bubble.Elastic mesh technique is adopted in computing process to avoid the numerical divergence caused by mesh grid distortion.The comparison between three-dimensional model and experimental data indicates that the calculated results coincide well with the experimental data.The dynamics of bubble near a rigid wall when the weak buoyancy is relative to strong Bjerknes force,the strong buoyancy is relative to weak Bjerknes force,and the buoyancy is relative to Bjerknes force are simulated by the three-dimensional model respectively.The calculated result of each case is discussed and compared with the Blake criterion which is based on Kelvin Impulse theory,obtaining the dynamic characters of bubble in different parameters. |
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