Bojarevics, V. ORCID: https://orcid.org/0000-0002-7326-7748 and Roy, A. (2012) Effect of magnetic forces on bubble transport and MHD stability of aluminium electrolysis cells. Magnetohydrodynamics, 48 (1). pp. 125-136. ISSN 0024-998X

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Abstract

The effect of electro-magnetophoretic force on gas bubbles due to the additional magnetic pressure distribution in the electrolyte is analyzed and a mathematical model is derived. According to the results, the integral force on an individual bubble is of similar order as the typical drag force associated with the electrolyte flow, opposing the motion of bubbles along the slightly inclined base of the anode. This could explain certain features of the anode effect onset. It is demonstrated that the presence of electrolyte channels, where the bubbles escape, has a crucial effect on the shape and size of the metal-bath interface deformation. A shallow layer flow model accounting for the channels is derived. Results on the interface stationary shape and MHD wave stability are presented.

Item Type:	Article
Uncontrolled Keywords:	magnetic forces, bubble transport, MHD stability, aluminium electrolysis cells
Subjects:	Q Science > QA Mathematics
Pre-2014 Departments:	School of Computing & Mathematical Sciences School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis
Related URLs:	Publisher Organisation
Last Modified:	27 Apr 2020 22:57
URI:	http://gala.gre.ac.uk/id/eprint/10338

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