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Stability of an evaporating thin liquid film

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Title: Stability of an evaporating thin liquid film
Author(s): Shklyaev, Oleg E.; Fried, Eliot
Subject(s): Boundary conditions
Abstract: We use a newly developed set of boundary conditions to revisit the problem of an evaporating thin liquid film. In particular, instead of the conventional Hertz–Knudsen–Langmuir equation for the evaporation mass flux we impose a more general equation expressing the balance of configurational momentum. This balance, which supplements the conventional conditions enforcing the balances of mass, momentum, and energy on the film surface, arises from a consideration of configurational forces within a thermodynamical framework. We study the influence of newly introduced terms such as the effective pressure, encompassing disjoining and capillary components, on the evolution of the liquid film. We demonstrate that this quantity affects a time-dependent base state of the evaporating film and is an important factor in applications involving liquid films with thicknesses of one or two monolayers. These factors lead to a revised understanding of the stability of an evaporating film. Dimensional considerations indicate that the most significant influence of these effects occurs for molten metals.
Issue Date: 2006-06
Publisher: Department of Theoretical and Applied Mechanics (UIUC)
Series/Report: TAM Reports 1094, (2006)
Genre: Technical Report
Type: Text
Language: English
URI: http://hdl.handle.net/2142/347
ISSN: 0073-5264
Publication Status: published or submitted for publication
Rights Information: Copyright owned by Oleg E. Shklyaev and Eliot Fried
Date Available in IDEALS: 2007-03-09
 

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  • Theoretical and Applied Mechanics (TAM) Technical Reports
    TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.

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