Hostname: page-component-cd9895bd7-dk4vv Total loading time: 0 Render date: 2024-12-21T11:09:38.136Z Has data issue: false hasContentIssue false
  • English
  • Français

Dynamics of a dry spot

Published online by Cambridge University Press:  24 June 2003

S. G. BANKOFF ,
M. F. G. JOHNSON ,
M. J. MIKSIS ,
R. A. SCHLUTER  and
P. G. LOPEZ
S. G. BANKOFF
Affiliation:
Department of Chemical Engineering, Northwestern University, Evanston, IL 60208, USA
M. F. G. JOHNSON
Affiliation:
Department of Chemical Engineering, Northwestern University, Evanston, IL 60208, USA
M. J. MIKSIS
Affiliation:
Department of Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, IL 60208, USA
R. A. SCHLUTER
Affiliation:
Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208, USA
P. G. LOPEZ
Affiliation:
CICESE, Division de Física Aplicada, Ensenada, BC 22860, Mexico
Get access Rights & Permissions [Opens in a new window]

Abstract

Experimental results are presented for the motion of a dry spot in a thin viscous film on a horizontal surface. These include global and spatial measurements of dry spot diameter, front velocities, static and dynamic contact angle, and the shape of the liquid–solid interface. Data are presented as a function of initial fluid depth for both an advancing fluid front of a collapsing dry spot and a receding fluid front of an opening dry spot. Results for both cases show that the final or static hole diameter increases as the initial fluid depth decreases. Also, insight is obtained into the relationship between the contact angle and the velocity for both advancing and receding fluid fronts. The experimental results are compared to a lubrication model, and good agreement is obtained.

Type
Papers
Information
Journal of Fluid Mechanics , Volume 486 , 10 June 2003 , pp. 239 - 259
Copyright
© 2003 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)