
Tommy Nylander
Professor

Analytical approach for the Lucas-Washburn equation
Author
Summary, in English
Porous media can be characterized by studying the kinetics of liquid rise within the pore spaces. Although porous media generally have a complex structure, they can be modeled as a single, vertical capillary or as an assembly of such capillaries. The main difficulties lie in separately estimating the effective mean radius of the capillaries and the contact angle between the liquid and the pore. In this paper we circumvent these obstacies by exploring another approach and suggest an analytical approach of the classical Lucas-Washburn equation (LWE). Specifically, we consider that the contact angle between the liquid meniscus and the inner surface of the capillary becomes a dynamic contact angle when the liquid front is in movement. It has previously been demonstrated that the resulting time dependence is due to frictional dissipation at the moving wetting front. (C) 2002 Elsevier Science (USA).
Department/s
- Physical Chemistry
Publishing year
2002
Language
English
Pages
415-421
Publication/Series
Journal of Colloid and Interface Science
Volume
250
Issue
2
Document type
Journal article
Publisher
Elsevier
Topic
- Physical Chemistry
Keywords
- dynamic contact angle
- wetting-line fraction
- capillary rise
Status
Published
ISBN/ISSN/Other
- ISSN: 1095-7103