电磁控制下结晶器内流谱和夹杂轨迹的数值预测

对直线电磁铁作用下板坯连铸机结晶器内磁场、钢液流谱和夹杂物运动轨迹进行数值预测，并提出用壁面承受的剪应力的最大差值来标定液流对结晶器窄面凝固壳的冲击强度。结果表明，采用电磁控制（ＥＭＢ）时，结晶器内的钢液流谱能被有效地控制，水口钢液射流对结晶壁的冲击可大大减弱，源电流强度和线圈安放位置是决定控制效果的关键因素。

Numerical Prediction on the Flow Patterns of Molten Steel and Trajectories of Inclusions in Continuous Casting Mold Controlled by the Electromagnetic Field

The numerical prediction is conducted on the magnetic field, fluid patterns of molten steel and trajectories of inclusion particles in continuous casting mold controlled by the electromagnetic brake (EMB). The difference between maximum and minimum of shear stress on wall is used to scale the strength of jet imping on the solidified shell in the narrow face wall by molten steel discharged from the immeresd nozzle. When the EMB is applied, the flow patterns of molten steel in the mold is greatly changed , and the impingement strength of the jet is reduced. It is found that the successful control of flow pattern depends on the coil current and location of direct-current magnet.