Comparison between the 3D numerical simulation and experiment of the bubble near different boundaries

Based on the potential flow theory, the vortex ring is introduced to simulate the toroidal bubble, and the boundary element method is applied to simulate the evolution of the bubble. Elastic-plasticity of structure being taken into account, the interaction between the bubble and the elastic-plastic structure is computed by combining the boundary element method (BEM) and the finite element method (FEM), and a corresponding 3D computing program is developed. This program is used to simulate the three-dimensional bubble dynamics in free field, near wall and near the elastic-plastic structure, and the numerical results are compared with the existing experimental results. The error is within 10%. The effects of different boundaries upon the bubble dynamics are presented by studying the bubble dynamics near different boundaries. Supported by the National Natural Science Foundation of China (Grant No. 50779007), the National Science Foundation for Young Scientists of China (Grant No. 50809018), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20070217074), the Defense Advanced Research Program of Science and Technology of Ship Industry (Grant No. 07J1.1.6), and Harbin Engineering University Foundation (Grant No. HEUFT07069)