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| 棱柱绕流流动的数值模拟 | |
| 引用本文： | 冯大奎,张志国,王力,Ashvinikumar V. Mudaliar. 棱柱绕流流动的数值模拟[J]. 计算力学学报, 2010, 27(4) |
| 作者姓名： | 冯大奎 张志国 王力 Ashvinikumar V. Mudaliar |
| 作者单位： | 1. 华中科技大学,船舶海洋工程系,武汉,430074;宜昌测试技术研究所,宜昌,443003 2. 德克萨斯农工大学,土木工程系,德克萨斯州,77843,美国 3. 弗吉尼亚理工大学,黑堡镇,弗吉尼亚州,24061,美国 |
| 基金项目： | 国家863研究计划，教育部回国留学基金资助项目，National Research Project 863，Fund of Department of Education for Returned Overseas Students |
| 摘 要： | 利用数值方法对长宽比为1／3, 1和3的棱柱绕流在雷诺数为100的非稳态流动特性进行了分析和研究。采用有限体积法对棱柱绕流的二维流动N-S方程进行离散求解,分析和研究了非稳态的棱柱绕流流场,升力系数,阻力系数和涡动特性,数值模拟的结果与相关文献的数据比较吻合。通过上述研究能够为了解棱柱绕流的非稳态流动特性提供有力的帮助。而对棱柱三维流动的模拟分析和对雷诺数的变化对棱柱流动特性的影响进行研究,将为掌握棱柱绕流的工程特性打下基础。 |
| 关 键 词： | 数值模拟 流动 棱柱 非稳态 |
| 收稿时间： | 2008-06-30 |
Numerical analysis of fluid flow around diamond cylinders |
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| FENG Da-kui,ZHANG Zhi-guo,WANG Li and Ashvinikumar V. Mudaliar. Numerical analysis of fluid flow around diamond cylinders[J]. Chinese Journal of Computational Mechanics, 2010, 27(4) | |
| Authors: | FENG Da-kui ZHANG Zhi-guo WANG Li Ashvinikumar V. Mudaliar |
| Affiliation: | School of Naval Architecture & Marine Engineering, Huazhong University of Science and Technology, Wuhan 430074,China;Yichang Testing Technique Research Institute, Yichang 443003, China;School of Naval Architecture & Marine Engineering, Huazhong University of Science and Technology, Wuhan 430074,China;Civil Engineering Department, Texas A&M University, Texas 77843, USA;Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA |
| Abstract: | A numerical simulation of the flow past a diamond cylinder with different aspect ratio 1/3, 1 and 3 which is able to oscillate transversely to the incident stream, are presented in this paper for a fixed Reynolds number equal to 100. The 2D unsteady Navier-Stokes equations are solved by a finite volume method. The flow structures, coefficient of drag and lift and Strouhal number have been discussed based on the transient numerical analysis results for different aspect ratio. The simulation results like flow structure, drag coefficient, lift coefficient and Strouhal numbers, in good agreement with available published data, which supplies us with a good understanding of the flow of diamond cylinder with different axis ratios at low Reynolds number. To gain a better understanding of the flow around diamond cylinder, 3D numerical study of diamond cylinder with more varying AR at different Reynolds numbers should be conducted. |
| Keywords: | numerical analysis flow diamond cylinder unsteady |
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