Numerical simulations of sessile droplet evaporating on heated substrate

	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.
	2017
会议日期	2016
会议地点	Bad Honnef, GERMANY
关键词	Microdroplets Surfaces Water
英文摘要	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.
会议录	EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
资助机构	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.
会议录出版者	SPRINGER HEIDELBERG
会议录出版地	HEIDELBERG
语种	英语
WOS记录号	WOS:000400393800017
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/72169]
专题	力学研究所_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]. 见:. Bad Honnef, GERMANY. 2016.