Molecular Dynamics Simulation of Bubble Arrangement and Cavitation Number Influence on Collapse Characteristics  

作　　者：Shuaijie Jiang Zechen Zhou XiuliWang WeiXu WenzhuoGuo Qingjiang Xiang 

机构地区：[1]Research Center of Fluid Machinery Engineering and Technology,Jiangsu University,Zhenjiang,212013,China [2]School of Energy and Power Engineering,Jiangsu University,Zhenjiang,212013,China

出　　处：《Fluid Dynamics & Materials Processing》2025年第3期471-491,共21页流体力学与材料加工(英文)

基　　金：funded by the Natural Science Foundation of China[U20A20292];Shandong Province Science andTechnology SMES InnovationAbility Improvement Project[2023TSGC0005];China Postdoctoral Science Foundation[2024M752697].

摘　　要：In nature,cavitation bubbles typically appear in clusters,engaging in interactions that create a variety of dynamicmotion patterns.To better understand the behavior ofmultiple bubble collapses and the mechanisms of interbubble interaction,this study employs molecular dynamics simulation combined with a coarse-grained force field.By focusing on collapsemorphology,local density,and pressure,it elucidates how the number and arrangement of bubbles influence the collapse process.The mechanisms behind inter-bubble interactions are also considered.The findings indicate that the collapse speed of unbounded bubbles located in lateral regions is greater than that of the bubbles in the center.Moreover,it is shown that asymmetrical bubble distributions lead to a shorter collapse time overall.

关 键 词：Molecular dynamics simulation coarse-grained force field bubble arrangement multiple bubbles bubble collapse 

分 类 号：O35[理学—流体力学]