Magnetohydronamic and thermal behavior of electroslag remelting slags |
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Authors: | A Jardy D Ablitzer J F Wadier |
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Affiliation: | (1) Centre National de la Recherche Scientifique (CNRS), France;(2) Laboratoire de Science et Génie des Matériaux Métalliques (URA 159 CNRS), Ecole des Mines, 54042 Nancy Cedex, France;(3) Ugine Research Centre, Compagnie Européenne du Zirconium CEZUS, 73400 Ugine, France |
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Abstract: | The paper is based on the development and use of a mathematical model that simulates the electroslag remelting (ESR) operation.
The model assumes axisymmetrical geometry and steady state. Maxwell equations are first solved to determine the electromagnetic
forces and Joule heating. Next, coupled fluid flow and heat transfer equations are written for the two liquids (slag and liquid
metal). Thek-ε model is used to represent turbulence. The system of coupled partial differential equations is then solved, using a control
volume method. Using the operating parameters as inputs, the model calculates the current density, velocity, and temperature
throughout the fluids. This paper is concerned with fluid flow and heat transfer in the slag phase. After being validated
by comparing its results with experimental observation, the model is used to evaluate the influence of operating variables,
such as the fill ratio, and the thermophysical properties of the slag. |
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