| Three-Dimensional Numerical Simulation on Marangoni Convection in a Sessile Water Droplet Evaporating in its Vapor at Low Pressure | |
Zhang Y1; Li YR1; Yu JJ1; Liu QS(刘秋生)2
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| Corresponding Author | Li, You-Rong([email protected]) |
| Source Publication | MICROGRAVITY SCIENCE AND TECHNOLOGY
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| 2019-04-01 | |
| Volume | 31Issue:2Pages:231-240 |
| ISSN | 0938-0108 |
| Abstract | In order to understand the effect of Marangoni convection on the evaporation rate and the flow pattern, we performed a series of three-dimensional numerical simulations on evaporation process of sessile water droplet by introducing a kinetic model. Substrate temperature and the ratio of vapor pressure varied from 299K to 308K and from 0.92 to 0.99, respectively. The variation range of contact angle was between 9.15 degrees and 120 degrees. Results show that the axisymmetric ring-shape temperature distribution on droplet free surface transforms into a serrated temperature distribution because of the enhancing Marangoni convection with the increase of substrate temperature. In addition, with the decrease of vapor pressure, the total evaporation rate on free surface will be increased and the Marangoni effect will be enhanced. The flow pattern is axisymmetric at 90(o)120(o) when the substrate temperature is fixed. However, it shifts to a multi-cellular pattern with the decrease of contact angle as a result of the competition between Marangoni flow and the evaporation. Additionally, the total evaporation rate increases with the increase of contact angle when contact angle is above 60(o), but when the contact angle is below 60(o), the trend is reverted. The temperature distribution becomes distinct at a small contact angle. |
| Keyword | Sessile droplet Evaporation Marangoni convection Kinetic model Numerical simulation |
| DOI | 10.1007/s12217-019-9694-1 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000466748700010 |
| WOS Keyword | LIQUID DROPLETS ; RESPONSE-SURFACE ; PATTERNS ; FLOW ; EXPRESSIONS ; SUBSTRATE |
| WOS Research Area | Engineering ; Thermodynamics ; Mechanics |
| WOS Subject | Engineering, Aerospace ; Thermodynamics ; Mechanics |
| Funding Project | National Natural Science Foundation of China[11532015] ; Chongqing University Postgraduates Innovation Project[CYS18041] ; Fundamental Research Funds for the Central Universities[2018CDXYDL0001] |
| Funding Organization | National Natural Science Foundation of China ; Chongqing University Postgraduates Innovation Project ; Fundamental Research Funds for the Central Universities |
| Classification | 二类 |
| Ranking | 4 |
| Contributor | Li, You-Rong |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/79163 |
| Collection | 微重力重点实验室 |
| Affiliation | 1.Chongqing Univ, Minist Educ, Sch Energy & Power Engn, Key Lab Low Grade Energy Utilizat Technol & Syst, Chongqing 400044, Peoples R China; 2.Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Key Lab Micrograv, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang Y,Li YR,Yu JJ,et al. Three-Dimensional Numerical Simulation on Marangoni Convection in a Sessile Water Droplet Evaporating in its Vapor at Low Pressure[J]. MICROGRAVITY SCIENCE AND TECHNOLOGY,2019,31,2,:231-240.Rp_Au:Li, You-Rong |
| APA | Zhang Y,Li YR,Yu JJ,&刘秋生.(2019).Three-Dimensional Numerical Simulation on Marangoni Convection in a Sessile Water Droplet Evaporating in its Vapor at Low Pressure.MICROGRAVITY SCIENCE AND TECHNOLOGY,31(2),231-240. |
| MLA | Zhang Y,et al."Three-Dimensional Numerical Simulation on Marangoni Convection in a Sessile Water Droplet Evaporating in its Vapor at Low Pressure".MICROGRAVITY SCIENCE AND TECHNOLOGY 31.2(2019):231-240. |
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| Jp2019188.pdf（1921KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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