The general flow characteristics of the molten steel and the behavior of molten steel and liquid slag interface (level fluctuation) in the mold with a new type of electromagnetic brake, freestanding adjustable combination electromagnetic brake (FAC-EMBr), was investigated by numerical simulation. The influences of the magnetic induction intensity, the submerged entry nozzle (SEN) immersion depth, the SEN port angle, and casting speed on the effect of FAC-EMBr are investigated. The results show that electromagnetic field formed by FAC-EMBr can cover the jet flow impact region, the upward backflow region, and the meniscus region simultaneously. With the increase of magnetic flux density, the jet flow impact intensity and the molten steel velocity in the upward and downward backflow regions are effectively suppressed, the meniscus wave height also decreases gradually, and the level fluctuation tends to be stable. For the influence of SEN port angle and SEN depth on the effect of FAC-EMBr mold, the results show that the molten steel velocity in the three main influence regions are all effectively depressed with increase of the value of SEN port angle and SEN depth. Even though under the condition of high casting speed (VC = 2.2 m/min), the application of FAC-EMBr can achieve effective braking effect.

中文翻译：

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独立式可调组合电磁制动器模具中钢水流动特性的数值模拟

通过数值模拟研究了钢水的一般流动特性以及具有新型电磁制动器、独立式可调组合电磁制动器（FAC-EMBr）的结晶器中钢水和液渣界面的行为（液位波动）。研究了磁感应强度、浸入式水口 (SEN) 浸入深度、SEN 端口角度和铸造速度对 FAC-EMBr 效果的影响。结果表明，FAC-EMBr形成的电磁场可以同时覆盖射流冲击区、向上回流区和弯液面区。随着磁通密度的增加，向上和向下回流区域的射流冲击强度和钢水速度得到有效抑制，弯月波高也逐渐减小，水平波动趋于稳定。对于SEN端口角度和SEN深度对FAC-EMBr结晶器效果的影响，结果表明，随着SEN端口角度和SEN深度值的增加，三个主要影响区域的钢水速度均得到有效抑制。即使在高拉速条件下（VC = 2.2 m/min），FAC-EMBr的应用也能达到有效的制动效果。