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

doi:10.1016/j.icheatmasstransfer.2024.107295

IMECH-IR > 微重力重点实验室

	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
通讯作者	Zhu, Zhiqiang(zhuzhiqiang@imech.ac.cn) ; Chen, Zhenqian(zqchen@seu.edu.cn)
发表期刊	INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
	2024-03-01
卷号	152 页码:12
ISSN	0735-1933
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.
关键词	Condensation Droplet migration Heat transfer Asymmetrical structures Lattice Boltzmann method
DOI	10.1016/j.icheatmasstransfer.2024.107295
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001188062100001
关键词[WOS]	LATTICE BOLTZMANN SIMULATION ; DROPWISE CONDENSATION ; HEAT-TRANSFER ; PHASE-TRANSITIONS ; SURFACES ; GROWTH ; MODEL
WOS研究方向	Thermodynamics ; Mechanics
WOS类目	Thermodynamics ; Mechanics
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)
项目资助者	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)
论文分区	一类
力学所作者排名	1
RpAuthor	Zhu, Zhiqiang ; Chen, Zhenqian
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/94653
专题	微重力重点实验室
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.