Sanyal, Dipayan and Rao, P R and Gupta, O P (2005) Modelling of free boundary problems for phase change with diffuse interfaces. Mathematical Problems in Engineering, 2005 (3). pp. 309-324. ISSN 1024-123X

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Abstract

We present a continuum thermodynamical framework for simulating multiphase Stefan problem. For alloy solidification, which is marked by a diffuse interface called the mushy zone, we present a phase filed like formalism which comprises a set of macroscopic conservation equations with an order parameter which can account for the solid, liquid, and the mushy zones with the help of a phase function defined on the basis of the liquid fraction, the Gibbs relation, and the phase diagram with local approximations. Using the above formalism for alloy solidification, the width of the diffuse interface (mushyzone) was computed rather accurately for iron carbon and ammonium chloride-water binary alloys and validated against experimental data from l iterature.

Item Type:	Article
Subjects:	Crystal Chemistry, Thermodynamics, Phase Equilibria
Divisions:	Glass
Depositing User:	Bidhan Chaudhuri
Date Deposited:	20 Mar 2012 10:02
Last Modified:	28 Mar 2018 09:12
URI:	http://cgcri.csircentral.net/id/eprint/1282

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