Long-term computations of turbulent flow and temperature field in the induction channel furnace with various channel design

E. Baake¹ - A. Jakoviċs² - S. Pavlovs² - M. Kirpo^{2, 3}

¹ Institute of Electrotechnology Leibniz, University of Hannover, Wilhelm-Busch-Str. 4, D-30167 Hannover, Germany
² Laboratory for Mathematical Modelling of Environmental and Technological Processes, University of Latvia, 8 Zellu str., LV-1002 Riga, Latvia
³ Institute of Thermodynamics and Fluid Mechanics, Ilmenau University of Technology, P.O. Box 100565, 98684 Ilmenau, Germany

Abstract
The paper deals with numerical analysis of low frequency and turbulent oscillations of the temperature field in an industrial induction channel furnace (ICF) with different designs of the channel -- symmetrical and asymmetrical with one widened branch. The turbulent heat and mass exchange in the melt is calculated using a 3D electromagnetic (EM) model and a 3D transient Large Eddy Simulation (LES) approach. Long-term computations for the industrial ICF have been performed for the first time. Oscillations of the temperature maximum and its position in the ICF channel are considered. Averaged flow velocity and temperature field distributions are discussed and qualitative distributions of turbulent kinetic energy for re-circulated flows in different magnetohydrodynamic devices are compared. Tables 1, Figs 14, Refs 7.