期刊
JOURNAL OF FLUID MECHANICS
卷 792, 期 -, 页码 712-739出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1017/jfm.2016.96
关键词
capillary flows; interfacial flows (free surface); thin films
资金
- NSF [CBET-0932259]
We calculate here the force on a probe at a viscous, compressible interface, laden with soluble surfactant that equilibrates on a finite time scale. The motion of the probe through the interface drives variations in the surfactant concentration at the interface that in turn leads to a Marangoni flow that contributes to the force on the probe. We demonstrate that the Marangoni force on the probe depends non-trivially on the surface shear and dilatational viscosities of the interface indicating the difficulty in extracting these material properties from force measurements at compressible interfaces.
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