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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.
会议录名称EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
2017
会议名称8th Meeting of the International-Marangoni-Association (IMA)
会议日期2016
会议地点Bad Honnef, GERMANY
摘要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.
关键词Microdroplets Surfaces Water
WOS记录号WOS:000400393800017
资助信息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.
收录类别CPCI-S
语种英语
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文献类型会议论文
条目标识符http://dspace.imech.ac.cn/handle/311007/72169
专题国家微重力实验室
通讯作者Chen, PG (reprint author), Aix Marseille Univ, CNRS, Cent Marseille, M2P2, Marseille, France.
作者单位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
推荐引用方式
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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