EFFECT OF MASS TRANSFER ON THE MOTION OF A LIQUID--LIQUID INTERFACE. Page: 16 of 97
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10
those obtained experimentally. The calculated frequencies agreed within
35 percent but the decay constants were nearly an order of magnitude too
high. The assumptions used in the development were very limiting, however,
and large errors were not unexpected.
Most recently, Suciu, Smigelschi, and Ruckenstein (23) studied the
phenomenon of spreading of thin, soluble, surface films. They fed solute
onto a surface, allowing it to spread radially at steady .state and obser-
ving the resulting flow patterns with a Schlieren apparatus. They used
several systems and reported qualitatively the results in terms of wave
formation and the type of film formation.
In a more recent article (22) the same authors reported on continued
work with the same experimental apparatus, but in addition, a photographic
system had been devised to measure film velocities as a function of radius.
The contact angle of the film with the bulk liquid was measured and found
to be smaller than for equilibrium contact of the same two liquids. This
difference was attributed to what was called dynamic values of inter-
facial tension which were different from those obtained in static inter-
facial tension measurements and to surface velocities which produced
forces that must be balanced-by interfacial tension forces.
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Scholle, W A. EFFECT OF MASS TRANSFER ON THE MOTION OF A LIQUID--LIQUID INTERFACE., thesis or dissertation, January 1, 1970; [Ames,] Iowa. (https://digital.library.unt.edu/ark:/67531/metadc868665/m1/16/: accessed April 24, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.