| 大涡模拟预报可靠性分析 |
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| 引用本文： | 何子干,夏庆福.大涡模拟预报可靠性分析[J].大连理工大学学报,2001,41(2):228-230. |
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| 作者姓名： | 何子干 夏庆福 |
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| 作者单位： | 大连理工大学土木工程系, 辽宁大连 116024 |
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| 摘 要： | 针对明渠道湍流流动，研究了计算网格、计算域大小、亚格子（SGS）模型和雷诺数等因素对大涡模拟（LES）预报精度的影响。研究表明，即使简单外形的湍流流动，网格尺寸大小及匹配仍较大地影响大涡模拟计算结果，因此具体使用中应予以充分重视。
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| 关 键 词： | 明渠 湍流流动 网格尺寸 预报可靠性 大涡模拟 亚格子模型 雷诺数 壁面摩擦速度 |
| 文章编号： | 1000-8608(2001)02-0228-03 |
Reliability analysis of predictions by large eddy simulation |
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| HE Zi gan,XIA Qing fu.Reliability analysis of predictions by large eddy simulation[J].Journal of Dalian University of Technology,2001,41(2):228-230. |
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| Authors: | HE Zi gan XIA Qing fu |
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| Abstract: | For the turbulent flows of the open channels, the effects of factors of calculational mesh, the sizes of computational domain, SGS models and Reynolds numbers on the prediction precision of large eddy simulation(LES) are discussed. The results indicate that the prediction precision of LES is deeply affected by the sizes and the matching of mesh, even for those simple turbulent flows. In practice, the above factors should be considered. |
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| Keywords: | open channel flow grid dimension/prediction reliability large eddy simulation(LES) subgrid scale model |
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