Effects of wall wettability on vortex flows induced by collapses of cavitation bubbles: A numerical study

doi:10.1063/5.0164694

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Effects of wall wettability on vortex flows induced by collapses of cavitation bubbles: A numerical study
	Huang JL(黄剑霖); Wang JZ(王静竹); Huang J(黄荐); Lv, Pengyu ; Li, Hongyuan ; Wang YW(王一伟)
刊名	PHYSICS OF FLUIDS
	2023-08-01
卷号	35 期号:8 页码:87122
ISSN号	1070-6631
DOI	10.1063/5.0164694
英文摘要	The collapse of a cavitation bubble near a rigid wall induces a vortex flow that spreads along the wall with a high shear rate, and an important factor affecting the behavior of the bubble dictated by its contact lines is the wettability of the wall. However, the mechanism for the dynamics of the vortex flow and wall shear stress remains to be settled. A numerical study conducted using the multiphase compressible InterFoam solver in the OpenFOAM framework is reported here. The wall wettability is modeled by the contact angle b and slip velocity uslip, and the results show that compared with a neutral surface, superhydrophobic and hydrophilic surfaces broaden the wall-vortex regimes. The main area of shear stress is enlarged both spatially and temporally in the case of a superhydrophobic surface, while it is extended spatially and shortened temporally for a hydrophilic surface. The wall-vortex flow produces a long-term wall shear stress with high magnitude, the maximum value of which is 174.41 kPa for the superhydrophobic surface, 131.82 kPa for the hydrophilic surface, and 103.12 kPa for the neutral surface. Integrating the shear stress over time and space shows that the slip velocity uslip is mainly responsible for affecting the distribution of the shear stress in the vortex flow induced by the collapse of a cavitation bubble. The present findings provide a good guide for ultrasonic cleaning in engineering applications.
分类号	一类/力学重要期刊
WOS研究方向	Mechanics ; Physics
语种	英语
WOS记录号	WOS:001050274100007
资助机构	National Natural Science Foundation of China [12122214, 12272382, 12293000, 12293003, 12293004] ; Youth Innovation Promotion Association CAS [2022019] ; High-level Innovation Research Institute Program of Guangdong Province [2020B0909010003, GARA2022002000]
其他责任者	Wang, JZ (corresponding author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China. ; Wang, JZ (corresponding author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China. ; Wang, JZ (corresponding author), Guangdong Aerosp Res Acad, Guangzhou 511458, Peoples R China.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92663]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位	1.{Lv Pengyu, Li Hongyuan} Peking Univ Coll Engn State Key Lab Turbulence & Complex Syst Dept Mech & Engn SciBIC-ESAT Beijing 100871 Peoples R China 2.{Wang Jingzhu} Guangdong Aerosp Res Acad Guangzhou 511458 Peoples R China 3.{Wang Jingzhu} Univ Chinese Acad Sci Sch Engn Sci Beijing 100049 Peoples R China 4.{Wang Yiwei} Univ Chinese Acad Sci Sch Future Technol Beijing 100049 Peoples R China 5.{Huang Jianlin, Wang Jingzhu, Huang Jian, Wang Yiwei} Chinese Acad Sci Inst Mech Key Lab Mech Fluid Solid Coupling Syst Beijing 100190 Peoples R China
推荐引用方式 GB/T 7714	Huang JL,Wang JZ,Huang J,et al. Effects of wall wettability on vortex flows induced by collapses of cavitation bubbles: A numerical study[J]. PHYSICS OF FLUIDS,2023,35(8):87122.
APA	黄剑霖,王静竹,黄荐,Lv, Pengyu,Li, Hongyuan,&王一伟.(2023).Effects of wall wettability on vortex flows induced by collapses of cavitation bubbles: A numerical study.PHYSICS OF FLUIDS,35(8),87122.
MLA	黄剑霖,et al."Effects of wall wettability on vortex flows induced by collapses of cavitation bubbles: A numerical study".PHYSICS OF FLUIDS 35.8(2023):87122.