Numerical simulation of trajectory and deformation of bubble in tip vortex
According to the behaviors of a bubble in the ship wake flow, the numericai simulation is divided into two stages, quasi-spherical motion and non-spherical motion, based on whether the bubble is captured by the vortex or not. The one-way coupled particle tracking method （PTM） and the boundary elemen...
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| Published in: | Applied mathematics and mechanics Vol. 33; no. 6; pp. 701 - 716 |
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| Main Author: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
Heidelberg
Shanghai University
01-06-2012
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | According to the behaviors of a bubble in the ship wake flow, the numericai simulation is divided into two stages, quasi-spherical motion and non-spherical motion, based on whether the bubble is captured by the vortex or not. The one-way coupled particle tracking method （PTM） and the boundary element method （BEM） are adopted to simulate these two stages, respectively. Meanwhile, the initial condition of the second stage is taken as the output of the first one, and the entire simulation is connected and completed. Based on the numerical results and the published experimental data, the cavitation inception is studied, and the wake bubble is tracked. Besides, the split of the bubble captured by the vortex and the following sub-bubbles are simulated, including motion, deformation, and collapse. The results provide some insights into the control on wake bubbles and optimization of the wake flow. |
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| Bibliography: | wake bubble, tip vortex, split, reverse jet 31-1650/O1 According to the behaviors of a bubble in the ship wake flow, the numericai simulation is divided into two stages, quasi-spherical motion and non-spherical motion, based on whether the bubble is captured by the vortex or not. The one-way coupled particle tracking method （PTM） and the boundary element method （BEM） are adopted to simulate these two stages, respectively. Meanwhile, the initial condition of the second stage is taken as the output of the first one, and the entire simulation is connected and completed. Based on the numerical results and the published experimental data, the cavitation inception is studied, and the wake bubble is tracked. Besides, the split of the bubble captured by the vortex and the following sub-bubbles are simulated, including motion, deformation, and collapse. The results provide some insights into the control on wake bubbles and optimization of the wake flow. Bao-yu NI, A-man ZHANG, Xiong-liang YAO, Bin WANG （1. College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, P. R. China 2. National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, Sichuan Province, P. R. China） |
| ISSN: | 0253-4827 1573-2754 |
| DOI: | 10.1007/s10483-012-1581-9 |