气泡
机械
冲击波
压缩性
休克(循环)
物理
计算机模拟
幂律
材料科学
数学
医学
内科学
统计
作者
Eric Goncalvès da Silva,Philippe Parnaudeau
出处
期刊:Physics of Fluids
[American Institute of Physics]
日期:2021-11-01
卷期号:33 (11)
被引量:12
摘要
This paper presents a numerical study of the strong loads caused by the collapse of an air bubble immersed in water in the vicinity of a wall and impacted by a normal shock wave. Simulations are performed using an efficient parallel fully compressible two-phase solver based on a homogeneous mixture model. Different configurations are investigated by varying the distance of the initial bubble to the wall. Comparisons are done with exiting results and with two-dimensional simulations highlighting large discrepancies on the computed pressure peaks. The computations show that the stand-off distance has significant effects on the collapse dynamics and the maximum wall pressure leading to potential wall damage. A power-law is proposed for the evolution of the maximum pressure peak as a function of the stand-off distance. Finally, a twin-bubble collapse is computed illustrating collective effects and the amplification of pressure peak at the wall.
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