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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.
Source PublicationEUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
2017
Conference Name8th Meeting of the International-Marangoni-Association (IMA)
Conference Date2016
Conference PlaceBad Honnef, GERMANY
AbstractMotivated 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.
KeywordMicrodroplets Surfaces Water
WOS IDWOS:000400393800017
Funding OrganizationWe 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 ByCPCI-S
Language英语
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/72169
Collection国家微重力实验室
Corresponding AuthorChen, PG (reprint author), Aix Marseille Univ, CNRS, Cent Marseille, M2P2, Marseille, France.
Affiliation1.[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]. HEIDELBERG:SPRINGER HEIDELBERG,2017.
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