Effect of slippage on the thermocapillary migration of a small droplet

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Title:	Effect of slippage on the thermocapillary migration of a small droplet
Authors:	陳志臣;Nguyen, Huy-Bich;Chen, Jyh-Chen
Contributors:	工學院機械工程學系
Keywords:	Special Topic: Selected Papers from the Second Conference on Advances in Microfluidics and Nanofluidics and Asia-Pacific International Symposium on Lab on Chip, Singapore, 2011 (Guest Editors: Zhiping Wang and Charles Yan Chun)
Date:	2012-03-02
Issue Date:	2026-04-23 15:02:47 (UTC+8)
Publisher:	American Institute of Physics;United States: American Institute of Physics
Abstract:	摘要： We conduct a numerical investigation and analytical analysis of the effect of slippage on the thermocapillary migration of a small liquid droplet on a horizontal solid surface. The finite element method is employed to solve the Navier-Stokes equations coupled with the energy equation. The effect of the slip behavior on the droplet migration is determined by using the Navier slip condition at the solid-liquid boundary. The results indicate that the dynamic contact angles and the contact angle hysteresis of the droplet are strictly correlated to the slip coefficient. The enhancement of the slip length leads to an increase in the droplet migration velocity due to the enhancement of the net momentum of thermocapillary convection vortices inside the droplet. A larger contact angle leads to an increase in the migration velocity which in turn enlarges the rate of the droplet migration velocity to the slip length. There is good agreement between the analytical and the numerical results when the dynamic contact angle utilizes in the analytical approach obtained from the results of the numerical computation, and the static contact angle is smaller than 50°. 其他題名： Biomicrofluidics 出版者： United States: American Institute of Physics 出版日期： 2012-03-01 出處： Biomicrofluidics, 2012-03, Vol.6 (1), p.012809-012809-13 資源來源： AIP Journals (American Institute of Physics) 版權： American Institute of Physics 版權： 2012 American Institute of Physics 版權： Copyright © 2012 American Institute of Physics 2012 American Institute of Physics 識別號： ISSN: 1932-1058 識別號： EISSN: 1932-1058 識別號： DOI: 10.1063/1.3644382 識別號： PMID: 22662076 識別號： CODEN: BIOMGB
Appears in Collections:	[Departmant of Mechanical Engineering ] journal & Dissertation

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