| 三维槽道湍流的大涡模拟 |
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| 引用本文： | 额日其太,邹正平,王强.三维槽道湍流的大涡模拟[J].推进技术,2004,25(1):23-26,31. |
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| 作者姓名： | 额日其太 邹正平 王强 |
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| 作者单位： | 北京航空航天大学,能源与动力工程学院,北京,100083 |
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| 基金项目： | 国家自然科学基金资助项目(50206001). |
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| 摘 要： | 利用大涡模拟方法模拟了雷诺数为13000的充分发展槽道湍流流动。为了比较网格和亚格子模型对计算结果的影响,采用了三种不同的网格数目,以及Smagorinsky模型和动力模型等两种亚格子模型,并与直接数值模拟结果进行了比较。结果表明,大涡模拟可以比较准确地给出速度分布、脉动速度均方根分布等湍流统计参数。在此基础上,对近壁区小尺度湍流结构进行了研究。
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| 关 键 词： | 大涡模拟 通道 湍流 |
| 文章编号： | 1001-4055(2004)01-0023-05 |
Large-eddy simulation of 3D turbulence in the channel |
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| Eriqitai,ZOU Zheng-ping and WANG Qiang.Large-eddy simulation of 3D turbulence in the channel[J].Journal of Propulsion Technology,2004,25(1):23-26,31. |
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| Authors: | Eriqitai ZOU Zheng-ping and WANG Qiang |
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| Institution: | School of Jet Propulsion, Beijing Univ. of Aeronautics and Astronautics, Beijing 100083, China;School of Jet Propulsion, Beijing Univ. of Aeronautics and Astronautics, Beijing 100083, China;School of Jet Propulsion, Beijing Univ. of Aeronautics and Astronautics, Beijing 100083, China |
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| Abstract: | Large-eddy simulations was employed to simulate the full-developed turbulence in channel which Reynolds number is 13000. In order to compare the effects of grid number and sub-grid model on the simulated results, three different grid numbers and two sub-grid models are used in the simulations. The results show that the statistical parameters such as velocity and RMS of velocity can be simulated accurately by Large-eddy simulations. On the basis of this, this paper studied the small-scale coherent structures near the wall. |
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| Keywords: | Large-eddy simulations~ Channel Turbulent flow |
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