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Oscillation of Confined Jets in Continuous Casting Mold Flow
Author(s) -
Javurek Mirko,
Wincor Raimund,
Brummayer Markus
Publication year - 2006
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200610244
Subject(s) - nozzle , turbulence , mechanics , oscillation (cell signaling) , jet (fluid) , casting , slab , flow (mathematics) , perpendicular , volume of fluid method , symmetry (geometry) , materials science , reynolds number , continuous casting , physics , geometry , mathematics , composite material , chemistry , thermodynamics , biochemistry , geophysics
In continuous slab casting, the liquid steel is introduced into the mould via a submergered entry nozzle. This nozzle usually has two opposed orifices on its side walls, generating two diametrically opposed turbulent jets that are declined about 20° to the horizontal axis. These jets interact with the surrounding walls of the mould, which leads to an unstable flow situation and a self induced oscillation of the jets. Although both mould and nozzle geometry have two perpendicular symmetry planes, the oscillations are asymmetric. The fluid flow inside the mold is calculated with a 3D finite volume solver using turbulence models based on Reynolds‐averaging. The massflow of the jets and the mould extensions are varied, and the numerical results are partially compared with PIV‐measurements at a 1:1 scaled watermodel of the mould. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)