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International Heat Transfer Conference 7

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

CONDENSATION ON A THIN FILM FLOWING OVER AN ADIABATIC SPHERE

Harold R. Jacobs
University of Utah, Salt Lake City, Utah; Colorado State University, Fort Collins; Department of Mechanical Engineering The Pennsylvania State University University Park, PA

Jeff A. Bogart
Department of Mechanical and Industrial Engineering, University of Utah, Salt Lake City, Utah 84112 U.S.A.

Ralph W. Pensel
Department of Mechanical and Industrial Engineering, University of Utah, Salt Lake City, Utah 84112 U.S.A.

DOI: 10.1615/IHTC7.430
pages 89-94

Abstract

A binary boundary layer approach is used to analyze the condensation of a saturated vapor on a thin laminar film of either the same or a different liquid flowing over a sphere. It is assumed that the condensate forms a continuous layer on the film. Thus, while the analysis deals with a vapor condensing on an immiscible film, it also applies to a vapor condensing on its own liquid. Expressions are presented for the average Nusselt Number over the segment of a sphere where a thermal boundary layer is penetrating the film and for the degree of utilization of the cooling capacity of the film as a function of the important non-dimensional parameters. Comparison with published data confirms the applicability of the result.

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