Ural Federal University named after the first President of Russia B. N. Yeltsin, Ekaterinburg, Russia:

V. A. Nikulin, Assistant Professor

S. V. Mordanov, Senior Lecturer

V. I. Matyukhin, Assistant Professor, Chair of Thermophysics and Informatics in Metallurgy, e-mail: matyhin53@mail.ru

O. V. Matyukhin, Assistant Professor, Chair of Thermophysics and Informatics in Metallurgy

Research of hydrodynamic processes in horizontal converter used the data of its physical modeling with application of final elements method for solving of fluid flow problems. Description of two-phase medium in liquid blowing applied the Eulerian model, making possible to increase the stability of solution for complex volumetric phase distribution and endless mutual dissolving. Using the Navier – Stokes equation, the turbulence models were created for individual unknown variables, based on dual-parameter equations. These models allow to determine the turbulent velocity and length scale of turbulent fluctuations. Considering the equations of changes of kinetic energy and dissipation rate of phase mass, there were established the regularities of formation of eddy viscosity of flows, taking into account their volumetric distribution complexity. Check of reliability of the model to the real processes was carried out on the basis of experimental data of physical modeling of hydrodynamics of bath blowing in horizontal converter. The established regularities of formation of density fields for water-air mixture in the machine volume, as well as water and air velocity, showed that the most intense movement of air masses in the bubbled bath at the given calculating conditions occurs near the wall of the machine in the area, placed directly above entry jet sections. At the same time, the surface area of converter wall, located above the level of entry air nozzles by 50–80 mm, was subjected to maximal jet effect. For the purpose of reduction of effect of turbulence area on the real converter, there was offered the use of local compressed air sinking of a part of its shell along the whole length for formation of the slag skull on inner lining surface. The developed mathematical model can be upgraded in the future with accounting of heat transfer and mass transfer appearances, occurring in production facilities.

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