Kristian Etienne Einarsrud, Ingo Eick
Aluminium metal production through electrolytic reduction of alumina in a cryolite bath is a complex, multi-physics, multi-scale process, including magneto-hydrodynamics (MHD), bubble flow, thermal convection, melting and solidification phenomena based on a set of chemical reactions. Through interactions of the different forces applied to the liquid bath combined with the different time and length scales, self-organised fluctuations occur. Moreover, the MHD behaviour causes a complex metal pad profile and a series of surface waves due to the meta-stable condition of the metal / cryolite interface. The large aspect ratio of an industrial cell, with a footprint of 20 by 4 m and at the same time having dimensions approaching just 30 mm of height for the reaction zone, prevents an integrated approach where all relevant physics are included in a single mathematical model of this large degree of freedom system. In order to overcome these challenges, different modelling approaches have been established in ANSYS fluent; Three models are used to predict details of specific physics: one to predict the electro-magnetic forces and hence the metal pad profile.
@article{6be008e3-29f1-4ef5-a9d1-a9823ea85291,
title={Towards a coupled multi scale multi phys},
author={Kristian Etienne Einarsrud and Ingo Eick},
year={2026},
language={en}
}TY - JOUR TI - Towards a coupled multi scale multi phys AU - Kristian Etienne Einarsrud AU - Ingo Eick PY - 2026 LA - en ER -
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