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Interaction between thermocapillary and buoyancy driven convection

✍ Scribed by J. A. Szymczyk

Publisher
Springer
Year
1992
Tongue
English
Weight
948 KB
Volume
12
Category
Article
ISSN
0723-4864

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✦ Synopsis

Convective flows driven by the variation of surface tension due to a radial temperature gradient along a liquid-gas interface were studied. Three liquids of different viscosities were applied, so that a wide range of Marangoni numbers was encountered. Light sheet technique and differential interferometry were taken to analyse the thermal flows. The mechanism of stationary thermocapillary convection, the influence of the radial temperature gradient and the kinematic viscosity on the Marangoni boundary layer thickness are discussed. Transitions from the steady to the oscillatory Marangoni convection are discovered and the oscillations are visualized with differential interferometry.

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