Mirko Javurek, Markus Brummayer, Raimund Wincor,
"Oscillation of Confined Jets in Continuous Casting Mold Flow"
: PAMM - Proceedings of GAMM 200, Vol. 6, WILEY-VCH Verlag GmbH $ Co KGaA, Weinheim, Seite(n) 527-528, 10-2006
Oscillation of Confined Jets in Continuous Casting Mold Flow
Sprache des Titels:
PAMM - Proceedings of GAMM 200
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.