Simulation on steel/slag interfacial behavior and analysis of slag entrapment in a stainless steel slab continuous casting mold
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摘要: 基于湍流模型与多相流模型的耦合,应用液面追踪技术(VOF),实现了对不锈钢板坯连铸结晶器内流体流动及钢/渣界面行为的模拟计算,并用水模拟结果进行了对比验证,在此基础上计算出实际的钢/渣界面特征及界面上钢/渣行为.通过分析水口的侧孔形状、出口倾角、水口浸入深度、结晶器宽度以及拉速对钢/渣界面特征及界面上钢/渣行为影响规律,指出了钢/渣界面行为与卷渣是密切相关的,进而探讨了钢/渣界面及卷渣形成的机理.Abstract: T Steel/slag interfacial behavior in a stainless steel slab continuous casting mold was numerically simulated on the base of a coupled model of turbulence and multiphase fluid flow and the VOF method. The results of numerical simulation were validated by a water model. The steel/slag interracial profile and the behavior of steel and slag in the interface were obtained. By analyzing the influence of port form, port angle, SEN depth, mold width and casting speed on steel/slag interfacial behavior, it was pointed that slag entrapment was inherently influenced by steel/slag interracial behavior and the forming mechanism of interracial profiles and slag entrapment was discussed.
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Keywords:
- slab mold /
- steel/slag interface /
- slag entrapment /
- shear strain rate /
- numerical simulation
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