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- Publisher
- Emerald Publishing
- Copyright
- Copyright © 1998 MCB UP Ltd. All rights reserved.
- ISSN
- 0961-5539
- DOI
- 10.1108/09615539810206348
- Publisher site
- See Article on Publisher Site
Abstract
Presents a physical model for determining the effective thermal conductivity of a two‐phase composite medium with fixed or moving interfaces. A rigorous numerical method for removing oscillations in the thermal field is proposed. The methodology is based on the volume averaging technique with the assumption that the phases may coexist at a temperature different from that of fusion. The analysis reveals that the effective conductivity of a two‐phase medium is dependent on the phase volume fractions, on their thermal conductivities and on a constitutive constant which determines the geometric structure of the medium and the nature of the interface (fixed or moving). The results for the one and two dimensional conduction‐dominated phase change problem show that the oscillations produced by previous fixed‐grid methods are eliminated.
Journal
International Journal of Numerical Methods for Heat and Fluid Flow – Emerald Publishing
Published: May 1, 1998
Keywords: Discontinuities; Modelling; Phase change