| 用Lattice Boltzmann方法计算矩形柱的绕流问题 |
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| 引用本文： | 谭玲燕,陈明杰,施卫平,黄艳金.用Lattice Boltzmann方法计算矩形柱的绕流问题[J].吉林大学学报(理学版),2009,47(2):273-276. |
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| 作者姓名： | 谭玲燕 陈明杰 施卫平 黄艳金 |
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| 作者单位： | 1. 吉林大学 数学学院, 长春 130012; 2. 沈阳飞机设计研究所, 沈阳 110035 |
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| 摘 要： | 采用二维9速度Lattice Boltzmann模型, 数值模拟流体流过矩形截面柱体的绕流问题. 在边界处, 采用二阶精度的插值边界处理方法, 计算了流动的Strouhal数及柱体受到的升力和阻力系数, 给出了流场的流线和等涡线图. 使来流方向与矩形柱的长边方向平行, 计算结果表明, 改变矩形的长/宽比, 流场的Strouhal数随长/宽比呈线性变化.
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| 关 键 词： | LatticeBoltzmann方法 Strouhal数 矩形柱 流线 等涡线 |
| 收稿时间： | 2008-07-17 |
Lattice Boltzmann Simulation of Flow Past a Rectangular Cylinder |
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| TAN Ling-yan,CHEN Ming-jie,SHI Wei-ping,HUANG Yan-jin.Lattice Boltzmann Simulation of Flow Past a Rectangular Cylinder[J].Journal of Jilin University: Sci Ed,2009,47(2):273-276. |
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| Authors: | TAN Ling-yan CHEN Ming-jie SHI Wei-ping HUANG Yan-jin |
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| Institution: | 1. College of Mathematics, Jilin University, Changchun 130012, China;2. Shenyang Aircraft Design & Research Institute, Shengyang 110035, China |
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| Abstract: | A two-dimensional nine-velocity Lattice Boltzmann model was employed to simulate the flow past a rectangular elongated cylinder numerically.The second-order interpolation scheme was used for the boundary treatment.The Strouhal number,the drag coefficient and lift coefficient were calculated.The streamlines and the vorticity contours were presented.Under varying the length/width ratio of the rectangular,and keeping the inlet velocity to be parallel to the length side of the rectangular cylinder,numerical res... |
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| Keywords: | Lattice Boltzmann method Strouhal number rectangular elongated cylinder streamline vorticity contour |
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