Experimental investigation on evaporation dynamics of sessile ethanol droplets on a heated substrate

doi:10.1016/j.ijheatmasstransfer.2020.120352

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	Experimental investigation on evaporation dynamics of sessile ethanol droplets on a heated substrate
	Ye S ; Zhang L; Wu CM ; Li YR ; Liu QS(刘秋生)
发表期刊	INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
	2020-12-01
卷号	162 页码:120352
ISSN	0017-9310
摘要	In order to understand the evolution of thermal patterns and the effect of the thermal convection in the sessile droplet on the evaporation processes, a series of experimental investigations on evaporation dynamics of sessile ethanol droplets on a heated substrate were carried out based on the steady state evaporation method. The contact radius of the droplet on the substrate is fixed at 2.5 mm and the droplet height varies from 0.4 to 1.2 mm. Results indicate that with the decrease of the droplet height, the temperature distribution near the droplet center becomes nonuniform, and hydrothermal waves and Benard-Marangoni cells appear in sequence. The effect of liquid supplementation on the thermal patterns can be neglected. With the raise of the substrate temperature, both the wave number of the thermal waves and the frequency of the temperature fluctuation near the contact line increase. Moreover, the evaporation rate decreases first, and then increases with the decrease of the droplet height. The enhancing thermal convection in the droplet can promote the evaporation process at a high substrate temperature. (C) 2020 Elsevier Ltd. All rights reserved.
关键词	Experimental investigation THERMAL PATTERNS Sessile droplet MARANGONI FLOW Evaporation SURFACE Thermal patterns DEPOSITION Heated substrate DROPS
DOI	10.1016/j.ijheatmasstransfer.2020.120352
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000589418900041
WOS研究方向	Thermodynamics ; Engineering ; Mechanics
WOS类目	Thermodynamics ; Engineering, Mechanical ; Mechanics
项目资助者	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11532015, 51776022} ; Science and Technology Research Project of Chongqing Education Commission [KJQN201903305}
论文分区	一类
力学所作者排名	5
RpAuthor	Li, YR
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/85417
专题	微重力重点实验室
作者单位	1.{Ye Shuang, Wu Chun-Mei, Li You-Rong} Chongqing Univ Coll Energy & Power Engn Key Lab Low Grade Energy Utilizat Technol & Syst Minist Educ Chongqing 400044 Peoples R China 2.{Zhang Li} Chongqing City Management Coll Chongqing 401331 Peoples R China 3.{Liu Qiu-Sheng} Chinese Acad Sci Inst Mech Key Lab Micrograv Natl Micrograv Lab Beijing 100190 Peoples R China
推荐引用方式 GB/T 7714	Ye S,Zhang L,Wu CM,et al. Experimental investigation on evaporation dynamics of sessile ethanol droplets on a heated substrate[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2020,162:120352.Rp_Au:Li, YR
APA	Ye S,Zhang L,Wu CM,Li YR,&刘秋生.(2020).Experimental investigation on evaporation dynamics of sessile ethanol droplets on a heated substrate.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,162,120352.
MLA	Ye S,et al."Experimental investigation on evaporation dynamics of sessile ethanol droplets on a heated substrate".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 162(2020):120352.

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