摘要
A there-dimensional unsteady coupled mathematical model has been used to analyze the turbulent flow, temperature fields,magnetic field and macroscopic solidification of molten steel in compact strip production(CSP)thin slab continuous casting with electromagnetic stirring(EMS)on secondary cooling zone,in which induced current caused both by flow movement and external magnetic field and end effect of stirrer has been considered.Lorenz force and Joule heat contributed by induction current also have been considered.EMS in secondary cooling zone results in the obverse flow changes in molten steel flow pattern,and leads to horizontal recirculation flow within stirrer zone.Degree of superheat is reduced or eliminated rapidly when molten steel is stirred by EMS.The process of EMS makes the temperature in molten steel homogeneous.After a relatively shot period of time when using EMS,the flow pattern and temperature field will reach to a new 'quasi-static-state'.Molten steel could be uniformly stirred by a one-sided stirrer concerned.
A there-dimensional unsteady coupled mathematical model has been used to analyze the turbulent flow, temperature fields,magnetic field and macroscopic solidification of molten steel in compact strip production(CSP)thin slab continuous casting with electromagnetic stirring(EMS)on secondary cooling zone,in which induced current caused both by flow movement and external magnetic field and end effect of stirrer has been considered.Lorenz force and Joule heat contributed by induction current also have been considered.EMS in secondary cooling zone results in the obverse flow changes in molten steel flow pattern,and leads to horizontal recirculation flow within stirrer zone.Degree of superheat is reduced or eliminated rapidly when molten steel is stirred by EMS.The process of EMS makes the temperature in molten steel homogeneous.After a relatively shot period of time when using EMS,the flow pattern and temperature field will reach to a new 'quasi-static-state'.Molten steel could be uniformly stirred by a one-sided stirrer concerned.
