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Dynamics of bubble collapse near rigid boundaries with different curvatures

文献类型：期刊论文

作者Zhao, Junjie3; Bai, Pengbo1,2; Wang, Jingzhu1,2; Wang, Yiwei1,2; Cao, Shunxiang3
刊名PHYSICS OF FLUIDS
出版日期2025-03-01
卷号37期号:3页码:16
ISSN号1070-6631
DOI10.1063/5.0254780
通讯作者Cao, Shunxiang(caoshunxiang@sz.tsinghua.edu.cn)
英文摘要Understanding the bubble dynamics near a curved boundary is crucial for evaluating the cavitation impacts, as well as advancing the beneficial use of cavitation in real-world applications such as biofilm cleaning and environmental treatment. This study employs a high-fidelity multiphase flow model to analyze the dynamics of bubble collapse near rigid curves of varying curvatures. The numerical model employs a second-order-accurate solver within a two-dimensional axisymmetric coordinate system to solve the 5-equation model (Kapila's model). After being validated by three bubble collapse experiments, the model is applied to examine the bubble morphology and jet characteristics near different curved boundaries at varying standoff distances. The results reveal that as curvature increases, the jet momentum decreases due to the decrease in the jet volume, while the bubble jet velocity gradually increases in scenarios of downward jetting. Smaller standoff distances lead to bubbles with higher transverse to longitudinal ratio, insufficient longitudinal contraction, and reduced jet velocity. Finally, we summarize the changes in bubble morphology, jet velocity, jet momentum, and peak pressure with curvatures and standoff distances and fit the boundary for different bubble collapse patterns. This study establishes a clear correlation between bubble jet momentum and bubble type, finding that downward jetting can enhance jet momentum.
WOS关键词CAVITATION BUBBLES ; PHOTOGRAPHY ; PARTICLE ; SURFACE ; LIQUID
资助项目Shenzhen Peacock Plan10.13039/501100012234[OD2023006C] ; Shenzhen Peacock Plan ; Cross-disciplinary Research and Innovation Fund ; Tsinghua Shenzhen International Graduate School[12272382] ; National Natural Science Foundation of China[2022019] ; Youth Innovation Promotion Association CAS
WOS研究方向Mechanics ; Physics
语种英语
WOS记录号WOS:001437510800033
资助机构Shenzhen Peacock Plan10.13039/501100012234 ; Shenzhen Peacock Plan ; Cross-disciplinary Research and Innovation Fund ; Tsinghua Shenzhen International Graduate School ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS
源URL[http://dspace.imech.ac.cn/handle/311007/100220]  
专题力学研究所_流固耦合系统力学重点实验室(2012-)
通讯作者Cao, Shunxiang
作者单位1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China
3.Tsinghua Univ, Inst Ocean Engn, Shenzhen Int Grad Sch, Shenzhen 518055, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Junjie,Bai, Pengbo,Wang, Jingzhu,et al. Dynamics of bubble collapse near rigid boundaries with different curvatures[J]. PHYSICS OF FLUIDS,2025,37(3):16.
APA Zhao, Junjie,Bai, Pengbo,Wang, Jingzhu,Wang, Yiwei,&Cao, Shunxiang.(2025).Dynamics of bubble collapse near rigid boundaries with different curvatures.PHYSICS OF FLUIDS,37(3),16.
MLA Zhao, Junjie,et al."Dynamics of bubble collapse near rigid boundaries with different curvatures".PHYSICS OF FLUIDS 37.3(2025):16.

入库方式： OAI收割

来源：力学研究所

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