Fluid Flow in Continuous Casting Affected by Electromagnetic Fields
In continuous casting of steel,electromagnetic braking (EMBr) and electromagnetic stirring (EMS) is a common practice to influence the flow.These devices help to produce high quality steels with a wide range of casting formats and steel grades in the same caster and with the same SEN.The solidification structure in the core of the strand is controlled by stirring below the mold.Electromagnetic devices have to be designed so that weight and stability of the mold is not negatively affected.A Computational Fluid Dynamics (CFD) model that simultaneously solves the Unsteady Reynolds-Averaged Navier-Stokes (URANS) equations for the solidifying steel melt and Maxwell’s equation for the electromagnetism has been developed,validated and used to design various electromagnetic devices for continuous casters.The CFD model is implemented in the OpenFOAM toolbox and was validated by experimental data.The successful implementation of the braking principle in the mold is shown by examples,e.g.a ruler-type EMBr and a local field EMBr.The local field EMBr controls the flow out of the SEN ports with lower effort concerning mold construction weight and energy consumption.The result of a strand-EMS simulation is presented as well.
Computational Fluid Dynamics continuous casting EMBr EMS MHD SEN
Norbert VOGL Hans-Jürgen ODENTHAL Markus REIFFERSCHEID
SMS Siemag AG,R&D Department,Eduard-Schloemann-Strasse 4,40237 Düsseldorf,Germany
国际会议
the 6th International Congress on the Science and Technology of Steelmaking,ICS2015(第六届国际炼钢科技大会)
北京
英文
399-402
2015-05-12（万方平台首次上网日期，不代表论文的发表时间）