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首页> 外文会议>Asia steel international conference >LargLarge Eddy Simulation of Molten Steel and Argon Bubble flow in a Continuous Casting Mold
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LargLarge Eddy Simulation of Molten Steel and Argon Bubble flow in a Continuous Casting Mold

机译：钢水和氩气泡流动的Largrarge涡流模拟连续铸造模具

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摘要

Euler-Euler simulation of the gas-liquid flow in a continuous casting mold with large eddy simulation (LES) is presented.The sub-grid scale modeling is based on the Smagorinsky model with the model constant Cs=0.1.The drag force and non-drag forces (lift force,virtual mass force and turbulent dispersion force) are incorporated in the model.Characteristics of the two phase flow in a slab continuous casting mold are obtained with this model.The ultrasonic testing results and industrial observation of "exposed eye"are used to validate the model.The simulation results show that the flow of molten steel and argon gas are all deviation.With the decrease of the argon bubble diameter,more and more bubbles would gather in the upper of the mold,and the penetrating length of the gas plume is extended.When injecting argon gas,the vorticity strength of upper region of the mold become intense,but in the lower of the mold,the effect of swirl flow become disappearing.And with the decrease of the diameter,the impingement spot of molten steel move up near the region of narrow face,and the region of vorticity disappear becomes larger.
机译：提出了具有大涡流模拟（LES）的连续铸模中的气液流动的欧拉 - 欧拉·欧拉·欧拉仿真。子网格刻度模型基于模型常数Cs = 0.1的Smagorinsky模型。阻力和非-drag力（提升力，虚拟质量力和湍流色散力）纳入模型中。用这种模型获得板坯连续铸造模具中的两个相流的特征。超声波检测结果和工业观察“暴露的眼睛“用于验证模型。仿真结果表明，钢水和氩气的流动都是偏差。在氩气泡直径下降，越来越多的气泡将聚集在模具的上层，并且穿透延长气体羽毛的长度。当注入氩气时，模具上部区域的涡度强度变得强烈，但在模具的较低时，旋流的效果变得消失。随着径向的减少Ter，钢水的冲击点在窄面区域附近移动，涡度区域消失变大。

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