The dynamics of the impact and coalescence of droplets on a solid surface

被引：53

作者：

Castrejon-Pita, J. R. ^{[1
]}

Betton, E. S. ^{[1
]}

Kubiak, K. J. ^{[2
]}

Wilson, M. C. T. ^{[2
]}

Hutchings, I. M. ^{[1
]}

机构：

[1] Univ Cambridge, Inst Mfg, Cambridge CB3 0FS, England

[2] Univ Leeds, Sch Mech Engn, Leeds LS2 9JT, W Yorkshire, England

来源：

BIOMICROFLUIDICS | 2011年 / 5卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

LATTICE BOLTZMANN; LIQUID-DROPS; FLOW;

D O I：

10.1063/1.3567099

中图分类号：

Q5 [生物化学];

学科分类号：

070307 [化学生物学];

摘要：

A simple experimental setup to study the impact and coalescence of deposited droplets is described. Droplet impact and coalescence have been investigated by high-speed particle image velocimetry. Velocity fields near the liquid-substrate interface have been observed for the impact and coalescence of 2.4 mm diameter droplets of glycerol/water striking a flat transparent substrate in air. The experimental arrangement images the internal flow in the droplets from below the substrate with a high-speed camera and continuous laser illumination. Experimental results are in the form of digital images that are processed by particle image velocimetry and image processing algorithms to obtain velocity fields, droplet geometries, and contact line positions. Experimental results are compared with numerical simulations by the lattice Boltzmann method. c 2011 American Institute of Physics. [doi: 10.1063/1.3567099]

引用

页数：20

共 21 条

[1]

A simple large-scale droplet generator for studies of inkjet printing [J].