| 连铸中间包湍流流动及夹杂物分布的大涡模拟 |
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| 引用本文： | 刘中秋,王强,李宝宽,姜茂发.连铸中间包湍流流动及夹杂物分布的大涡模拟[J].东北大学学报(自然科学版),2012,33(5):669-672. |
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| 作者姓名： | 刘中秋 王强 李宝宽 姜茂发 |
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| 作者单位： | 东北大学材料与冶金学院,辽宁沈阳,110819 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 为深入了解中间包内钢液的流动湍流特性和夹杂物分布,采用雷诺平均方程和大涡模拟两种方法计算了中间包内湍流场及夹杂物的分布.结果表明:雷诺平均方程得到的中间包湍流场呈现对称分布;而大涡模拟可以捕捉更多的随机漩涡,更能反映流动的某些细节,对中间包内的瞬时流场预报更准确,得到的瞬态湍流场呈现非对称分布.得到了夹杂物主要的三种运动轨迹,且夹杂物的分布是不对称的,容易聚集在中间包边角和壁面处.
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| 关 键 词： | 大涡模拟 雷诺平均方程 中间包 湍流 夹杂物 非对称 |
Large Eddy Simulation for Turbulent Flow and Inclusion Distribution in Continuous Casting Tundish |
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| LIU Zhong-qiu,WANG Qiang,LI Bao-kuan,JIANG Mao-fa.Large Eddy Simulation for Turbulent Flow and Inclusion Distribution in Continuous Casting Tundish[J].Journal of Northeastern University(Natural Science),2012,33(5):669-672. |
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| Authors: | LIU Zhong-qiu WANG Qiang LI Bao-kuan JIANG Mao-fa |
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| Institution: | (School of Materials & Metallurgy,Northeastern University,Shenyang 110819,China.) |
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| Abstract: | The Reynolds-averaged Navier Stokes(RANS) and large eddy simulation(LES) were utilized to predict the turbulent flow and the distribution of inclusions in tundish.The results showed that the flow field structure computed by RANS is symmetric,but the flow field calculated by LES is asymmetric.Moreover,the flow field can be described more accurate and comprehensive by LES.In addition,LES can capture more random vortexes from the flow field.Three inclusion trajectories are obtained,and the distribution of inclusions is also asymmetric.The wall and corner of the tundish are the place where inclusions gather easily. |
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| Keywords: | LES(large eddy simulation) RANS(Reynolds-averaged Navier Stokes) tundish turbulence inclusion asymmetric |
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