WIT Press


Viscous Liquid Film Flows Over A Vertical Corrugated Surface. Calculation Of Heat And Mass Transfer

Price

Free (open access)

Paper DOI

10.2495/HT000341

Volume

27

Pages

10

Published

2000

Size

266 kb

Author(s)

Yu. Trifonov

Abstract

Viscous liquid film flows over a vertical corrugated surface. Calculation of heat and mass transfer Yu. Trifonov Institute ofThermophysics, Siberian Branch of Russian Academy of Sciences, Russia Abstract The purpose of the present paper is to study hydrodynamics and heat-mass transfer of the film flow over corrugated surfaces. Viscosity, inertia and surface tension forces were taken into account. The calculations have been carried out on base of Navier-Stokes equations. Amplitude of corrugations was comparable with the Nusselt's film thickness. As a result it has been obtained that, for example, at small Reynolds numbers area of "thick" film forms in the surface cavity and area of "thin" film forms on the top. Stagnation zones are found and their transformation with increasing of Reynolds number is investigated. Influence of the micro-corrugations on both heat transfer from the wall and mass transfer through the free surface have been investigated. 1 Introduction Theoretical s

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