Keywords
skull crucible
electromagnetic stirring system
mathematical modeling of electromagnetic and hydrodynamic processes
How to Cite
Abstract
The structural schemes of skull crucibles with electromagnetic stirring systems (EMSS) that have found practical application in electron-beam skull melting technology are considered. A three-dimensional mathematical model and a methodology for numerical study of the influence of design factors of a sectioned scull crucible and EMSS on the energy and hydrodynamic efficiency of melt stirring has been presented. The mathematical model of electromagnetic processes is formulated in terms of vector magnetic and scalar electric potentials, and hydrodynamic processes are formulated in the form of Navier-Stokes equations using the k-ε turbulence model. The calculations were performed using the finite element method in the Comsol Multiphysics software environment. The comparison of the effectiveness of design factors was carried out using the example of a skull crucible with a total load of titanium charge of about 200 kg. The influence of such factors as the number and size of through-holes in the side wall of the crucible, the material and thickness of this wall, and the number of coils of the stirrer inductor has been investigated. Ref. 10, fig. 7, table.
References
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