Dynamics of water spreading on a glass surface

Roux, D. C. D. and Cooper-White, J. J. (2004) Dynamics of water spreading on a glass surface. Journal of Colloid And Interface Science, 277 2: 424-436. doi:10.1016/j.jcis.2004.05.007


Author Roux, D. C. D.
Cooper-White, J. J.
Title Dynamics of water spreading on a glass surface
Journal name Journal of Colloid And Interface Science   Check publisher's open access policy
ISSN 0021-9797
Publication date 2004-01-01
Year available 2004
Sub-type Article (original research)
DOI 10.1016/j.jcis.2004.05.007
Open Access Status DOI
Volume 277
Issue 2
Start page 424
End page 436
Total pages 13
Place of publication San Diego
Publisher Academic Press Inc Elsevier Science
Language eng
Abstract The impact of a water droplet on a glass surface is studied experimentally using a high-speed video camera which can catch up to 60,000 images per second with an exposure time of 10 mus. A wide range of impact velocities are studied by varying the fall height, showing different spreading regimes. Particular attention is given to the dynamics of the contact angle and its relation to the maximum expanding radius and capillary number. A linear relation between the contact line velocity and the impact velocity is found experimentally. Using acoustic analysis, an evaluation of the pressure at the contact line is given. We also confront predicted and experimental jetting times. This work shows that descriptions of drop impact based purely on conservation of energy are inadequate to describe the dynamics of the event. The different shapes taken by the drops between the initial impact and the maximum radius determine the final outcome. (C) 2004 Elsevier Inc. All rights reserved.
Keyword Chemistry, Physical
drop impact
spreading
contact angle
contact line
water
Liquid-drop Impact
Solid-surface
Dry Surfaces
Contact
Interface
Kinetics
Motion
Q-Index Code C1
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Australian Institute for Bioengineering and Nanotechnology Publications
 
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Created: Thu, 20 Sep 2007, 04:34:05 EST