Other
Scientific paper
Jul 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003adspr..32..129r&link_type=abstract
Advances in Space Research, Volume 32, Issue 2, p. 129-136.
Other
1
Scientific paper
Predicting dynamic wetting -the displacement of one fluid by another immiscible fluid on a solid surface- is not a trivial task. The usual hydrodynamic assumptions -Newtonian, incompressible liquid, no-slip condition and rigid solid- give rise to a complicting singularity at the contact line (where the solid and the fluid-fluid interface meet) that prevents the use of the dynamic contact angle to determine the shape of the dynamic meniscus. This is a serious situation since dynamic wetting controls processes of interest not only on Earth but also in Space, where the location and movement of fluid in gas-liquid tanks is completely determined by the wetting behavior of the system. In this paper we review the modeling difficulties posed by this problem, and the efforts -theoretical and experimental- aimed at providing a method for predictive calculations of dynamic wetting and identifying controlling physics near the moving contact line.
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