| 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)
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| Source Publication | INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
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| 2020-12-01 | |
| Volume | 162Pages:120352 |
| ISSN | 0017-9310 |
| Abstract | 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. |
| Keyword | Experimental investigation THERMAL PATTERNS Sessile droplet MARANGONI FLOW Evaporation SURFACE Thermal patterns DEPOSITION Heated substrate DROPS |
| DOI | 10.1016/j.ijheatmasstransfer.2020.120352 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000589418900041 |
| WOS Research Area | Thermodynamics ; Engineering ; Mechanics |
| WOS Subject | Thermodynamics ; Engineering, Mechanical ; Mechanics |
| Funding Organization | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11532015, 51776022} ; Science and Technology Research Project of Chongqing Education Commission [KJQN201903305} |
| Classification | 一类 |
| Ranking | 5 |
| Contributor | Li, YR |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/85417 |
| Collection | 微重力重点实验室 |
| Affiliation | 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 |
| Recommended Citation 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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| Jp2020374.pdf（2398KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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