| 方柱绕流大涡模拟 |
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| 引用本文： | 谢志刚,许春晓,崔桂香,王志石. 方柱绕流大涡模拟[J]. 计算物理, 2007, 24(2): 171-180 |
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| 作者姓名： | 谢志刚 许春晓 崔桂香 王志石 |
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| 作者单位： | 1. 清华大学航天航空学院, 北京 100084;2. 澳门大学科技学院, 澳门 |
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| 摘 要： | 采用有限体/有限元混合格式、非结构网格和大涡模拟方法求解可压缩的N-S方程,对Re=22 000的方柱绕流进行数值模拟,并对不同的边界条件进行详细的分析比较.通过对以往研究经验的总结和利用精细的边界条件,使得采用二阶精度的数值格式和较稀疏的网格仍然得到了令人满意的计算结果,甚至优于以往采用密网格的模拟结果.
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| 关 键 词： | 大涡模拟 方柱绕流 有限体/有限元混合格式 |
| 文章编号： | 1001-246X（2007）02-0171-10 |
| 收稿时间： | 2005-12-22 |
| 修稿时间： | 2006-06-19 |
Large Eddy Simulation of Flows Around a Square Cylinder |
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| XIE Zhigang,XU Chunxiao,CUI Guixiang,WANG Zhishi. Large Eddy Simulation of Flows Around a Square Cylinder[J]. Chinese Journal of Computational Physics, 2007, 24(2): 171-180 |
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| Authors: | XIE Zhigang XU Chunxiao CUI Guixiang WANG Zhishi |
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| Affiliation: | 1. School of Aerospace, Tsinghua University, Beijing 100084, China;2. Faculty of Science and Technology, University of Macau, Macau, China |
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| Abstract: | The flow around a square cylinder at Re=22 000 is simulated with large eddy simulation(LES).The effect of boundary condition is studied.A mixed finite-volume finite-element method with unstructured grids is adopted to solve filtered compressible Navier-Stokes equations.Though the numerical accuracy is only second order and the grids is relatively coarse,the results are satisfactory and even better than those with much finer meshes. |
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| Keywords: | large eddy simulation flow around a square cylinder mixed finite-volume finite-element method |
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