Numerical study of vapor condensation and droplet migration on the asymmetrical micropillar arrays

doi:10.1016/j.icheatmasstransfer.2024.107295

	Numerical study of vapor condensation and droplet migration on the asymmetrical micropillar arrays
	Wang, Xin 1; Guo, Shuai 1; Tang, Zhiwen 1; Xu, Bo 1; Zhu ZQ(朱志强)4; Chen, Zhenqian 1,2,3
刊名	INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
	2024-03-01
卷号	152 页码:12
关键词	Condensation Droplet migration Heat transfer Asymmetrical structures Lattice Boltzmann method
ISSN号	0735-1933
DOI	10.1016/j.icheatmasstransfer.2024.107295
通讯作者	Zhu, Zhiqiang(zhuzhiqiang@imech.ac.cn) ; Chen, Zhenqian(zqchen@seu.edu.cn)
英文摘要	In this work, the pseudopotential lattice Boltzmann method is used to simulate the vapor condensation on the asymmetric micropillar-arrayed surface. The impact of surface wettability, structural height and spacing on the dynamic characteristics of droplets and condensation performance are analyzed. Finally, the heat flux and migration velocity of condensate on the micropillar-arrayed substrates with various structures for the same roughness are compared. The results demonstrate that the weaker wettability accelerates the droplet migration and thus enhances the heat transfer performance. By properly designing the spacing and height of the trapezoidal microstructures, both the migration velocity of droplets and heat flux can be enhanced. There exists an optimal microstructure to maximize the migration velocity and heat flux. Compared with the asymmetric trapezoidal structures, the migration velocity of droplets is smaller and the heat transfer efficiency is lower on the asymmetric triangular structures. This work illustrates the mechanism of directional migration of droplets and vapor condensation on the asymmetric micropillared arrays in detail.
分类号	一类
资助项目	National Natural Science Foundation of China[52306075] ; National Natural Science Foundation of Jiangsu Province[BK20230849] ; Low carbon Aerospace Power Engineering Research Center of Ministry of Education , China[CEPE2020022] ; ESA-CMSA International Cooperation of Space Experiment Project (Study on Condensation and Enhancement Methods under Microgravity)
WOS关键词	LATTICE BOLTZMANN SIMULATION ; DROPWISE CONDENSATION ; HEAT-TRANSFER ; PHASE-TRANSITIONS ; SURFACES ; GROWTH ; MODEL
WOS研究方向	Thermodynamics ; Mechanics
语种	英语
WOS记录号	WOS:001188062100001
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of Jiangsu Province ; Low carbon Aerospace Power Engineering Research Center of Ministry of Education , China ; ESA-CMSA International Cooperation of Space Experiment Project (Study on Condensation and Enhancement Methods under Microgravity)
其他责任者	Zhu, Zhiqiang ; Chen, Zhenqian
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/94652]
专题	力学研究所_国家微重力实验室
作者单位	1.Southeast Univ, Sch Energy & Environm, Nanjing, Peoples R China; 2.Southeast Univ, Sch Energy & Environm, Key Lab Energy Thermal Convers & Control, Minist Educ, Nanjing, Peoples R China; 3.Southeast Univ, Sch Energy & Environm, Jiangsu Prov Key Lab Solar Energy Sci & Technol, Nanjing, Peoples R China; 4.Chinese Acad Sci, Key Lab Micrograv, Natl Micrograv Lab, Inst Mech, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xin,Guo, Shuai,Tang, Zhiwen,et al. Numerical study of vapor condensation and droplet migration on the asymmetrical micropillar arrays[J]. INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER,2024,152:12.
APA	Wang, Xin,Guo, Shuai,Tang, Zhiwen,Xu, Bo,朱志强,&Chen, Zhenqian.(2024).Numerical study of vapor condensation and droplet migration on the asymmetrical micropillar arrays.INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER,152,12.
MLA	Wang, Xin,et al."Numerical study of vapor condensation and droplet migration on the asymmetrical micropillar arrays".INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER 152(2024):12.