| 用一个改善的标志网格方法对二维方柱涡脱落流的计算（英文） |
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| 引用本文： | 陈素琴,黄自萍,顾明.用一个改善的标志网格方法对二维方柱涡脱落流的计算（英文）[J].应用基础与工程科学学报,1999(2). |
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| 作者姓名： | 陈素琴 黄自萍 顾明 |
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| 作者单位： | 同济大学应用数学系!上海200092(陈素琴，黄自萍)，同济大学桥梁系!上海200092(顾明) |
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| 摘 要： | 对处于均匀流中高Ｒｅ数的二维方柱的气动力行为进行了数值研究．使用了二维不可压粘性ＮａｖｉｅｒＳｔｏｋｅｓ 方程和三维不可压ＮａｖｉｅｒＳｔｏｋｅｓ 方程两个模型，没有采用湍流模型，在非均匀网格系统下进行了计算，对对流项采用三阶逆风格式，求解压力方程组使用多重网格，大大提高了传统的ＭＡＣ方法的效率．对均值和脉动气动力以及Ｓｔｒｏｕｈａｌ数、功率谱等项与实验进行了比较，取得了比较满意的结果
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| 关 键 词： | 涡脱落 标志网格法 多重网格法 |
Computation of Vortex Shedding Flow Past 2D Square Cylinder Using an Improved MAC (Marker Cell) Method |
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| CHEN Suqin,HUANG Zipin.Computation of Vortex Shedding Flow Past 2D Square Cylinder Using an Improved MAC (Marker Cell) Method[J].Journal of Basic Science and Engineering,1999(2). |
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| Authors: | CHEN Suqin HUANG Zipin |
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| Abstract: | This paper analyzes distributions of the fluctuating surface pressure and the wind forces acting on a long square cylinder, which is 2D in the mean. This problem is of great practical interest in the field of structural design in wind engineering. The comparison of the results of direct numerical simulation for 2D and 3D computations are described. This method used by author improves efficiency of classical MAC(Marker Cell) such that three dimensional (3D) direct numerical simulation computation can be finished on PC computer. The aerodynamic properties of a square cylinder, such as the mean and fluctuating aerodynamic forces, Strouhal numbers and power spectrum of fluctuating lift and drag force, are compared with experiment results, satisfied results are obtained. |
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| Keywords: | vortex shedding MAC method multigrid method |
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