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Theory of evaporation and condensation

Koffman, L. D. and Plesset, M. S. and Lees, Lester (1984) Theory of evaporation and condensation. Physics of Fluids, 27 (4). pp. 876-880. ISSN 0031-9171. doi:10.1063/1.864716.

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The theory of evaporation and condensation is considered from a kinetic theory approach with a particular interest in the continuum limit. The moment method of Lees is used to solve the problem of the steady flow of vapor between a hot liquid surface and a cold liquid surface. By incorporating the singular nature of the problem, the forms of the continuum flow profiles found by Plesset are recovered. The expression for mass flux has the form of the Hertz–Knudsen formula but is larger by a factor of 1.665. A result of the theory is that the temperature profile in the vapor for the continuum problem is inverted from what would seem physically reasonable. This paradox is significant in that it casts a shadow of doubt on the fundamental theory.

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Additional Information:Copyright © 1984 American Institute of Physics (Received 10 May 1982; accepted 6 October 1983) The study was supported by the National Science Foundation under Grant No. ENG 75-22676 and by the California Institute of Technology.
Subject Keywords:evaporation; vapor condensation; kinetic equations; fluid flow; vapors; steady–state conditions; moments method; analytical solution
Issue or Number:4
Record Number:CaltechAUTHORS:KOFpof84
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5038
Deposited By: Archive Administrator
Deposited On:22 Sep 2006
Last Modified:08 Nov 2021 20:22

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