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Critical Heat Flux and Bubble Dynamics on Mixed Wetting Surfaces

文献类型：期刊论文

作者Wang, Xueli5; Gao, Quan4; Zhang, Pengju5; Zhao JF(赵建福)1,2; Xu, Na3; Zhang, Yonghai4
刊名MICROGRAVITY SCIENCE AND TECHNOLOGY
出版日期2024-07-17
卷号36期号:4页码:13
关键词Wedge-shaped channel Mixed wettability Pool boiling Critical heat flux Bubble dynamics
ISSN号0938-0108
DOI10.1007/s12217-024-10130-y
通讯作者Zhang, Yonghai(zyh002@mail.xjtu.edu.cn)
英文摘要To study the effect of micro-structured surface with wedge-shaped channel on pool boiling heat transfer performance of FC-72, four kinds of mixed wettability surfaces with area ratio of the micro-pillar region to the smooth channel region of approximately 1:1 were fabricated in this study (the surfaces were denoted as the Multi tip surface, Multi star surface, Less tip surface and Less star surface). The experimental results indicated that the CHF increases with the increase of liquid subcooling. The structural surface parameters will affect the bubble dynamics behavior and thus affect CHF. The effect of capillary wick suction on the mixed wetting surface first increases and then decreases. The capillary wick suction plays a significant role in the increase of CHF, and the capillary wick force on the Less tip surface with the best heat transfer performance is the largest. The Zuber model is modified by combining three factors to propose a critical heat flux model suitable for mixed wetting surfaces. With the increase of heat flux, the bubble detachment frequency decreases, the bubble detachment diameter increases and the nucleation site density basically shows exponential growth. Bubbles in the micro-pillar array region will be driven to slip onto the smooth channel due to energy difference and the bubbles in smooth channels will also migrate in the direction of wider smooth channels under the action of Laplace force.
分类号二类
WOS关键词POOL ; COALESCENCE
资助项目National Natural Science Foundation of China ; Shaanxi Provincial Science and Technology Department of China[2021JQ-569] ; Shaanxi Provincial Education Department of China[20JK0767] ; National Key R&D Program of China[2022YFF0503502] ; Young Talent Support Plan of Xi'an Jiaotong University ; [52304154]
WOS研究方向Engineering ; Thermodynamics ; Mechanics
语种英语
WOS记录号WOS:001270550100001
资助机构National Natural Science Foundation of China ; Shaanxi Provincial Science and Technology Department of China ; Shaanxi Provincial Education Department of China ; National Key R&D Program of China ; Young Talent Support Plan of Xi'an Jiaotong University
其他责任者Zhang, Yonghai
源URL[http://dspace.imech.ac.cn/handle/311007/96014]  
专题力学研究所_国家微重力实验室
作者单位1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, CAS Key Lab Micrograv, Inst Mech, Beijing 100190, Peoples R China;
3.Taiyuan Univ Technol, Coll Chem Engn & Technol, Shanxi Key Lab Chem Prod Engn, Taiyuan 030024, Peoples R China;
4.Xi An Jiao Tong Univ, Sch Chem Engn & Technol, Xian 710049, Peoples R China;
5.Xian Univ Sci & Technol, Sch Energy Engn, Xian 710054, Peoples R China;
推荐引用方式
GB/T 7714		 Wang, Xueli,Gao, Quan,Zhang, Pengju,et al. Critical Heat Flux and Bubble Dynamics on Mixed Wetting Surfaces[J]. MICROGRAVITY SCIENCE AND TECHNOLOGY,2024,36(4):13.
APA Wang, Xueli,Gao, Quan,Zhang, Pengju,赵建福,Xu, Na,&Zhang, Yonghai.(2024).Critical Heat Flux and Bubble Dynamics on Mixed Wetting Surfaces.MICROGRAVITY SCIENCE AND TECHNOLOGY,36(4),13.
MLA Wang, Xueli,et al."Critical Heat Flux and Bubble Dynamics on Mixed Wetting Surfaces".MICROGRAVITY SCIENCE AND TECHNOLOGY 36.4(2024):13.

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来源：力学研究所

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