高炉风口回旋区颗粒运动的DEM-CFD数值模拟

钢铁研究, 2015, 43(3): 9-12.

高炉风口回旋区颗粒运动的DEM-CFD数值模拟

孙俊杰 ^1, , 周恒 ^2, , 罗志国 ^3, , 邹宗树 ^4,

1.东北大学材料与冶金学院,辽宁沈阳,110819

2.东北大学材料与冶金学院,辽宁沈阳,110819

3.东北大学材料与冶金学院,辽宁沈阳,110819

4.东北大学材料与冶金学院,辽宁沈阳,110819

关键词：风口回旋区 , 离散单元模型 , 两相流 , 数值模拟 , 颗粒速度

Numerical simulation of particle motion in raceway of blast furnace by coupling between DEM and CFD

Keywords： raceway , DEM-CFD , two-phase flow , numerical simulation , particle velocity

为了模拟风口回旋区内焦炭颗粒的运动情况,建立了DEM-CFD耦合模型.模型充分考虑了颗粒与气体之间的曳力、压力梯度力、虚假质量力、升力等相间力,对回旋区形成过程及大小进行了颗粒尺度的分析,用数值模拟的手段获得风口回旋区颗粒运动的回旋趋势,得到此处颗粒的速度矢量场、气相体积分数、颗粒速度标量云图.结果显示4s时回旋区在风口前形成且稳定,靠近回旋区中心颗粒运动速度最大,远离回旋区中心的颗粒速度减小.计算结果同物理模拟的结果是一致的.

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高炉风口回旋区颗粒运动的DEM-CFD数值模拟

Numerical simulation of particle motion in raceway of blast furnace by coupling between DEM and CFD

参考文献