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Numerical simulations of sessile droplet evaporating on heated substrate
Chen X(陈雪); Chen PG; Ouazzani J; Liu QS(刘秋生); Chen, PG (reprint author), Aix Marseille Univ, CNRS, Cent Marseille, M2P2, Marseille, France.
Source PublicationEUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
2017-04-01
Volume226Issue:6Pages:1325-1335
ISSN1951-6355
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.

DOI10.1140/epjst/e2016-60203-y
Indexed BySCI
Language英语
WOS IDWOS:000400393800017
WOS SubjectPhysics, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China 11532015 11302236 Strategic Priority Research Program on Space Science, Chinese Academy of Sciences XDA04073000 XDA04020202-02 CNES (Centre National d'Etudes Spatiales) CAS CNRS/CNES
DepartmentNML流动稳定性与复杂流动
Classification二类
Ranking1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60707
Collection国家微重力实验室
Corresponding AuthorChen, PG (reprint author), Aix Marseille Univ, CNRS, Cent Marseille, M2P2, Marseille, France.
Recommended Citation
GB/T 7714
Chen X,Chen PG,Ouazzani J,et al. Numerical simulations of sessile droplet evaporating on heated substrate[J]. EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS,2017,226(6):1325-1335.
APA Chen X,Chen PG,Ouazzani J,Liu QS,&Chen, PG .(2017).Numerical simulations of sessile droplet evaporating on heated substrate.EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS,226(6),1325-1335.
MLA Chen X,et al."Numerical simulations of sessile droplet evaporating on heated substrate".EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS 226.6(2017):1325-1335.
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