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Laminar condensation on a moving drop. Part 2. Numerical solutions

Published online by Cambridge University Press:  20 April 2006

J. N. Chung ,
P. S. Ayyaswamy  and
S. S. Sadhal
J. N. Chung
Affiliation:
Department of Mechanical Engineering, Washington State University, Pullman, WA 99164–2920
P. S. Ayyaswamy
Affiliation:
Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA 19104
S. S. Sadhal
Affiliation:
Department of Mechanical Engineering, University of Southern California, Los Angeles, CA 90089–1453
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Abstract

In this paper, we investigate the problem of transient laminar condensation on a moving drop by the semianalytical series-truncation method. The objectives are to assess the validity and the accuracy of the matched-asymptotic method employed in Part 1. The fluid flow and thermodynamic variables are expanded as complete series of Legendre polynomials. The resulting transient momentum, energy and species equations are integrated numerically. The numerical scheme basically involves a three-point central difference for the spatial derivatives and a backward difference expression for the temporal derivatives. The finite-difference equations have been solved by the strongly implicit procedure. Good agreement of the fully transient numerical results with the singular perturbation approximation results of Part 1 lends credibility to a quasi-steady treatment of the continuous phase. The computational time requirements for the fully numerical solutions increase with decreasing non-condensable gas mass fraction in the bulk environment.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 139 , February 1984 , pp. 131 - 144
Copyright
© 1984 Cambridge University Press

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References

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