期刊
OCEAN ENGINEERING
卷 38, 期 17-18, 页码 1861-1868出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.oceaneng.2011.09.031
关键词
Underwater explosion; Numerical simulation; Bubble pulsation; Near free surface; Spray dome
资金
- Guang xi Natural Science Foundation, GXNSF [2010GXNSFB013007]
In this study, the volume-acceleration model was introduced to determine the initial conditions for bubble motion during underwater explosions. Subroutines, which define the initial and boundary conditions of the fluid field, were developed based on the MSC.DYTRAN software. Numerical simulations were compared with the results of validated experimental data. The calculated shapes of the bubbles are in excellent agreement with the experimental results. Using the interaction between a bubble and a free surface as basis, we simulated and analyzed the dynamic behavior of a bubble near a free surface, including the ring rebound of the bubble and the spray dome of the free surface. The computed spray dome heights are consistent with the results from empirical formulas. The dynamic behavior of the bubble and the spray dome of the free surface were systematically studied and summarized in accordance with the principle that bubble motion and the spray dome are closely related to standoff distance. The results of this study may serve as reference for understanding bubbles formed by underwater explosions and those generated by laser. They also have valuable implications for correlative theory research and engineering calculations. (C) 2011 Elsevier Ltd. All rights reserved.
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