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首页> 外文期刊>Steel Research International >Effect of Melt Superheat and Alloy Size on the Mixing Phenomena in Argon‐Stirred Steel Ladles
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Effect of Melt Superheat and Alloy Size on the Mixing Phenomena in Argon‐Stirred Steel Ladles

机译：熔体过热和合金大小对氩搅拌钢包钢材混合现象的影响

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>In the current study, the melting and mixing behavior of the alloy in argon‐stirred steel ladles is simulated based on the turbulent fluid flow. The formation of the solidified steel shells around cold ferroalloy particles is considered and the discrete phase model is adopted to predict the motion of ferroalloy particles. Ferroalloy particles are heated by the surrounding liquid during their travel trajectories and the mixing of dissolved alloy solute is described by the species transport model as the steel shell disappears. User defined functions are used to record the melting time and the trajectory length of each ferroalloy particle, as well as to check the mixing criteria in every cell and predict the local mixing time in the entire computational domain. Mixing time maps which visualize the mixing efficiency are obtained as a novel representation to describe the local mixing time in the entire ladle. The effects of the superheat of the melt and the diameter of alloy particles are investigated. The results show that the higher superheat of the melt and the smaller size of alloy particle facilitate the melting and mixing of the alloy in argon‐stirred steel ladles.
机译： <第XML：ID =“SRIN201800288-SEC-0001”> 在目前的研究中，基于湍流流体流动模拟了氩气搅拌钢钢包中合金的熔融和混合行为。考虑了冷铁合金颗粒周围的固化钢壳的形成，采用离散相模型来预测铁合金颗粒的运动。在其行进轨迹期间，铁合金颗粒通过周围液体加热，并且由于钢壳消失，物种运输模型描述了溶解合金溶质的混合。用户定义的功能用于记录每个铁合金颗粒的熔化时间和轨迹长度，以及检查每个细胞中的混合标准，并预测整个计算结构域中的局部混合时间。将测量混合效率的混合时间图作为新颖的表示，以描述整个钢包中的局部混合时间。研究了熔体过热和合金颗粒直径的影响。结果表明，熔体较高的过热和较小尺寸的合金颗粒促进了合金在氩搅拌钢水中的熔融和混合。

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