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The hydrodynamic stability of rapidly evaporating liquids at reduced pressure

Published online by Cambridge University Press:  29 March 2006

Harvey J. Palmer
Harvey J. Palmer
Affiliation:
Distillation Research Laboratory, Rochester Institute of Technology, Rochester, New York 14614 Present address: Department of Chemical Engineering, University of Rochester, Rochester, New York 14627.
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Abstract

The hydrodynamic stability of a pure liquid undergoing steady rapid evaporation at reduced pressure is examined using linear stability analysis. Results show that the rapidly evaporating liquid is unstable to local variations in evaporation rate, local surface depressions being produced by the force exerted on the surface by the rapidly departing vapour and sustained liquid flows being driven by the resultant shear exerted on the liquid surface by the vapour. The coupling of this ‘differential vapour recoil’ mechanism to the Marangoni effect is investigated and the importance of inertial heat transfer, fluid inertia and viscous dissipation at the interface to system stability is resolved.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 75 , Issue 3 , 11 June 1976 , pp. 487 - 511
Copyright
© 1976 Cambridge University Press

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