EFFECTS OF VISCOSITY VARIATION ON THE STABILITY OF FILM FLOW OVER HEATED OR COOLED INCLINED SURFACES.

D. Goussis, R. E. Kelly

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The stability of liquid film flow, where the viscosity depends exponentially on temperature, is investigated here for the case of heating or cooling from below. This is done by means of an analysis valid for long waves. It is shown that for sufficiently small values of the Prandtl number, cooling stabilizes the flow, while heating destabilizes it. For sufficiently large values of the Prandtl number, this trend is reversed. For the case of heating (cooling), a cut-off Prandtl number exists, above (below) which the flow is completely stable with respect to long waves.

Original languageBritish English
Title of host publicationAIChE Symposium Series
EditorsNayeem M. Farukhi
Pages10
Number of pages1
Edition236
StatePublished - 1984

Publication series

NameAIChE Symposium Series
Number236
ISSN (Print)0065-8812

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