Droplet evaporation on a horizontal substrate under gravity field by   mesoscopic modeling

doi:10.1016/j.jcis.2015.10.054

CORC > 北京大学 > 工学院

	Droplet evaporation on a horizontal substrate under gravity field by mesoscopic modeling
	Xie, Chiyu ; Zhang, Jianying ; Bertola, Volfango ; Wang, Moran
刊名	JOURNAL OF COLLOID AND INTERFACE SCIENCE
	2016
关键词	Drop evaporation Gravity effect Critical size Lattice Boltzmann method LATTICE-BOLTZMANN METHOD POLYMER SURFACES SUPERHYDROPHOBIC SURFACES SESSILE DROPLET WATER DROPLETS FLUID-FLOWS SIMULATION CONSTANT DYNAMICS
DOI	10.1016/j.jcis.2015.10.054
英文摘要	The evaporation of water drop deposited on a horizontal substrate is investigated using a lattice Boltzmann method (LBM) for multiphase flows with a large-density ratio. To account for the variation of evaporation flux distribution along the drop interface, a novel evaporation scheme is introduced into the LBM framework, and validated by comparison with experimental data. We aim at discovering the effect of gravity on the evaporating drop in detail, and various evaporation conditions are considered as well as different wetting properties of the substrates. An effective diameter is introduced as an indicator of the critical drop size under which gravity is negligible. Our results show that such critical diameter is much smaller than the capillary length, which has been widely accepted as the critical size in previous and current works. The critical diameter is found to be almost independent of the evaporation conditions and the surface wettability. A correlation between this critical diameter and the capillary length is also proposed for easy use in applications. (C) 2015 Elsevier Inc. All rights reserved.; SCI(E); EI; PubMed; EDITORIAL MATERIAL; mrwang@tsinghua.edu.cn; 317-323; 463
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/416825]
专题	工学院
推荐引用方式 GB/T 7714	Xie, Chiyu,Zhang, Jianying,Bertola, Volfango,et al. Droplet evaporation on a horizontal substrate under gravity field by mesoscopic modeling[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2016.
APA	Xie, Chiyu,Zhang, Jianying,Bertola, Volfango,&Wang, Moran.(2016).Droplet evaporation on a horizontal substrate under gravity field by mesoscopic modeling.JOURNAL OF COLLOID AND INTERFACE SCIENCE.
MLA	Xie, Chiyu,et al."Droplet evaporation on a horizontal substrate under gravity field by mesoscopic modeling".JOURNAL OF COLLOID AND INTERFACE SCIENCE (2016).