| Numerical simulations of sessile droplet evaporating on heated substrate | |
Chen X(陈雪) ; Chen, Paul G.; Ouazzani, Jalil; Liu QS(刘秋生); Chen, PG (reprint author), Aix Marseille Univ, CNRS, Cent Marseille, M2P2, Marseille, France.
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| Source Publication | EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS |
| 2017 | |
| Conference Name | 8th Meeting of the International-Marangoni-Association (IMA) |
| Conference Date | 2016 |
| Conference Place | Bad Honnef, GERMANY |
| Abstract | Motivated by the space project EFILE, a 2D axisymmetric numerical model in the framework of ALE method is developed to investigate the coupled physical mechanism during the evaporation of a pinned drop that partially wets on a heated substrate. The model accounts for mass transport in surrounding air, Marangoni convection inside the drop and heat conduction in the substrate as well as moving interface. Numerical results predict simple scaling laws for the evaporation rate which scales linearly with drop radius but follows a power-law with substrate temperature. It is highlighted that thermal effect of the substrate has a great impact on the temperature profile at the drop surface, which leads to a multicellular thermocapillary flow pattern. In particular, the structure of the multicellular flow behavior induced within a heated drop is mainly controlled by a geometric parameter (aspect ratio). A relationship between the number of thermal cells and the aspect ratio is proposed. |
| Keyword | Microdroplets Surfaces Water |
| WOS ID | WOS:000400393800017 |
| Funding Organization | We would like to thank S. Semenov for helpful discussions. This work was financially supported by the National Natural Science Foundation of China (Grants No. 11532015, No. 11302236), by the Strategic Priority Research Program on Space Science, Chinese Academy of Sciences (Grants No. XDA04073000, XDA04020202-02), and by the CNES (Centre National d'Etudes Spatiales). The work was conducted within the framework of a joint Doctoral Training Program (DPP) between Chinese Academy of Sciences (CAS) and Centre National de la Recherche Scientifique (CNRS). Funding from the CAS and support from the CNRS/CNES are gratefully acknowledged. |
| Indexed By | CPCI-S |
| Language | 英语 |
| Citation statistics | |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/72169 |
| Collection | 国家微重力实验室 |
| Corresponding Author | Chen, PG (reprint author), Aix Marseille Univ, CNRS, Cent Marseille, M2P2, Marseille, France. |
| Affiliation | 1.[Chen, Xue 2.Liu, Qiusheng] Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 3.[Chen, Xue 4.Chen, Paul G.] Aix Marseille Univ, CNRS, Cent Marseille, M2P2, Marseille, France 5.[Ouazzani, Jalil] Arcofluid Consulting LLC, 309 N Orange Ave, Orlando, FL 32801 USA |
| Recommended Citation GB/T 7714 | Chen X,Chen, Paul G.,Ouazzani, Jalil,et al. Numerical simulations of sessile droplet evaporating on heated substrate[C]EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS,2017. |
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| Cp-2017-011.pdf（659KB） | 会议论文 | 开放获取 | CC BY-NC-SA | View Download | ||
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