NUMERICAL STUDY OF INTERACTION BETWEEN BUBBLE AND STRUCTURE NEAR FREE SURFACE IN UNDERWATER EXPLOSION

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (18) : 13-18.

Lijian1, Panli1, Lin Xiankun1, Rong Jili2 , Xiang Dalin2

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Abstract

From the complex phenomenon of the interaction between bubble and structure near free surface in underwater explosion. Volume-acceleration model was introduced to determine the initial condition for bubble. Subroutines defined the initial value and boundary conditions of fluid field were developed by using MSC.DYTRAN finite element analysis software. The dynamic behavior of bubble near free surface and structure including jet of bubble and dome of free surface was simulated and analyzed. The computational result of the behavior of bubble was compared with the experimental results.. The interactions between bubble and structure were studied systematically and summarized. Relative law show that the dynamic behaviors of bubbles have close relation with distance parameter and initial angle of structure. The research has value to correlative theory research and engineering calculation.

Key words

underwater explosion / bubble pulse / near free surface / near rigid wall / jet

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Lijian1, Panli1, Lin Xiankun1, Rong Jili2,Xiang Dalin2. NUMERICAL STUDY OF INTERACTION BETWEEN BUBBLE AND STRUCTURE NEAR FREE SURFACE IN UNDERWATER EXPLOSION[J]. Journal of Vibration and Shock, 2015, 34(18): 13-18

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