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Non‐convergence versus non‐conservation in effective heat capacity methods for phase change problems

Zhen‐Xiang Gong (Department of Chemical Engineering, McGill University, Montreal, Quebec, Canada)
Arun S. Mujumdar (Department of Chemical Engineering, McGill University, Montreal, Quebec, Canada)

International Journal of Numerical Methods for Heat & Fluid Flow

ISSN: 0961-5539

Article publication date: 1 September 1997

477

Abstract

In the original effective heat capacity method the latent heat effect is approximated by a large effective heat capacity over a small temperature range. This method is simple in concept and easy to implement. However, it is so sensitive to the choice of the phase change temperature interval and the chosen time integration scheme that non‐convergence always occurs when it is implemented with implicit time integration schemes. Presents the cause and cure of non‐convergence in effective heat capacity methods and discusses sample results.

Keywords

Citation

Gong, Z. and Mujumdar, A.S. (1997), "Non‐convergence versus non‐conservation in effective heat capacity methods for phase change problems", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 7 No. 6, pp. 565-579. https://doi.org/10.1108/09615539710170754

Publisher

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MCB UP Ltd

Copyright © 1997, MCB UP Limited

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