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Finite element modelling of natural-convection-controlled change of phase

✍ Scribed by A. S. Usmani; R. W. Lewis; K. N. Seetharamu

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
860 KB
Volume
14
Category
Article
ISSN
0271-2091

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✦ Synopsis

Abstract

The problem of phase change in the presence of natural convection has been investigated. A model has been proposed based on the treatment of the release/absorption of latent heat as a heat source/sink in combination with the standard Galerkin finite element method with a primitive variable formulation on a fixed grid. To demonstrate the capabilities of the model, three cases of phase change of an aluminium alloy in the presence of natural convection arc considered, i.e. solidification, melting and combined solidification and melting. The solidification of water in a square cavity is modelled as another example, taking into account the density extremum, and the results are compared with a previously published work.

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