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Marangoni instabilities in liquid mixtures with Soret effects

Published online by Cambridge University Press:  26 April 2006

S. W. Joo
S. W. Joo
Affiliation:
Department of Mechanical Engineering, Wayne State University, Detroit, MI 48202, USA
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Abstract

The stability of a binary liquid mixture heated from above is analysed. The heat transfer is driven by the imposed temperature difference between the horizontal bottom plate and the ambient gas. The mass flux in the layer is induced by the Soret effect. The gravitational effects are ignored, and the instability is driven by solutocapillarity and retarded by thermocapillarity. The interface is allowed to deform, and both the small-wavenumber and the Pearson-type instabilities are studied. Oscillatory instability can exist when the thermocapillary is destabilizing and the solutocapillarity is stabilizing.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 293 , 25 June 1995 , pp. 127 - 145
Copyright
© 1995 Cambridge University Press

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