| L形和U形三维钝体结构绕流的数值模拟研究 |
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| 引用本文： | 李庆祥,周云,汪大洋. L形和U形三维钝体结构绕流的数值模拟研究[J]. 防灾减灾工程学报, 2011, 31(3): 247-254 |
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| 作者姓名： | 李庆祥 周云 汪大洋 |
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| 作者单位： | 广东省建筑科学研究院;广州大学土木工程学院; |
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| 基金项目： | 高等学校博士点学科专项基金项目(200810780001); 广东省自然科学基金团队项目(8351009101000001); 广东省教育部产学研项目(20090912); 广州市教育系统创新团队项目(09T003)资助 |
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| 摘 要： | 采用大涡模型对L形和U形三维钝体建筑物的绕流特性和风压分布特性进行数值研究.考虑平均和脉动速度入口边界,在雷诺数为1.5×105～7×105条件下,对2种钝体的9种分析工况进行瞬态动力分析,并将计算结果与已有研究进行对比.研究表明,钝体绕流对周围流场影响的强弱程度依次为尾流区、屋顶区、来流区,影响大小随着流场与钝体之间...
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| 关 键 词： | 大涡模型 计算流体动力学 绕流特性 风压分布 三维钝体结构 |
Three-dimensional Numerical Study on Wind Field around L-and U-shaped Models |
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| LI Qing-xiang,ZHOU Yun,WANG Da-yang. Three-dimensional Numerical Study on Wind Field around L-and U-shaped Models[J]. Journal of Disaster Prevention and Mitigation Engineering, 2011, 31(3): 247-254 |
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| Authors: | LI Qing-xiang ZHOU Yun WANG Da-yang |
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| Affiliation: | LI Qing-xiang~1,ZHOU Yun~2,WANG Da-yang~2 (1.Guangdong Provincial Academy of Building Research,Guangzhou 510500,China,2.School of Civil Engineering,Guangzhou University,Guangzhou 510006,China) |
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| Abstract: | The flow around L-and U-shaped models was studied numerically using the large-eddy simulation approach.Both mean and fluctuating wind were calculated and loaded in inlet boundary condition. Nine cases with different depth-width ratios(1:1,2:1 and 4:1)for L-and U-shaped models were considered. The results of pressure coefficient distribution were compared firstly with the experimental and numerical data provided by other researchers to verify the reliability of the method used in this paper.Velocity profiles... |
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| Keywords: | large eddy simulation computational fluid dynamics pressure distribution flow fields three dimensional bluff body |
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