On the migration of a droplet on an incline

被引：16

作者：

Dai, Qingwen ^{[1
,3
]}

Khonsari, M. M. ^{[2
]}

Shen, Cong ^{[2
]}

Huang, Wei ^{[1
]}

Wang, Xiaolei ^{[1
,3
]}

机构：

[1] Nanjing Univ Aeronaut Astronaut, Coll Mech & Elect Engn, Nanjing 210016, Peoples R China

[2] Louisiana State Univ, Dept Mech & Ind Engn, 3283 Patrick Taylor Hall, Baton Rouge, LA 70803 USA

[3] Jiangsu Key Lab Precis & Micro Mfg Technol, Nanjing 210016, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2017年 / 494卷

基金：

中国国家自然科学基金;

关键词：

Thermocapillary migration; Surface tension; Inclination angle; Lubrication approximation; THERMAL-GRADIENTS; MARANGONI FLOW; SOLID-SURFACES; LIQUID-DROPS; LINE ENERGY; MOTION; RETENTION; TRIBOLOGY; TENSION; FLUID;

D O I：

10.1016/j.jcis.2017.01.055

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A liquid droplet placed on a nonuniformly heated solid surface will migrate from a high temperature region to a low temperature region. The present study reports the results of an experimental investigation on the migration behavior of mineral oil droplets subjected to a thermal gradient on an inclined plane. A particular attention is paid to the relationship between the critical inclination angle and thermal gradients. It is shown that there exists a critical inclination angle at which the droplet migration is halted. This critical inclination angle can be readily predicted using analytical expressions derived in this paper. This study puts forward the understanding of the interface phenomenon of thermocapillary migration on an incline. The knowledge of the critical inclination is important in applications where the migration on an incline must be obstructed to retain adequate lubrication in the desired location. (C)2017 Elsevier Inc. All rights reserved.

引用

页码：8 / 14

页数：7

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