| 翼型近尾迹流中大尺度涡结构的理论模型 |
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| 引用本文： | 龙锴,陆利蓬.翼型近尾迹流中大尺度涡结构的理论模型[J].航空动力学报,2005,20(1):18-21. |
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| 作者姓名： | 龙锴 陆利蓬 |
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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 ( 10 172 0 16，5 0 4760 0 4)，国家自然科学基金重点基金资助项目 ( 5 0 13 60 10 ) |
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| 摘 要： | 根据流动稳定性理论相干结构的相关理论 ,提出了一种二维波模型来描述翼型近尾迹流动中的大尺度涡结构 ,通过采用对近尾迹流动区域分区处理的方法计算了近尾迹区域的大尺度涡结构。计算所得的流线图 ,涡量分布以及雷诺应力分布具有与实验结果相似的分布规律。说明该二维模型能够较好的描述近尾迹流动中这种大尺度涡结构的运动学和动力学特性
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| 关 键 词： | 航空、航天推进系统 翼型 湍流尾迹 涡结构 二维波 |
| 文章编号： | 1000-8055(2005)01-0018-04 |
| 收稿时间： | 2004/1/12 0:00:00 |
| 修稿时间： | 2004年1月12日 |
Theoretical Model of the Large-Scale Eddy Structures in the Near Wake Region Behind an Airfoil |
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| LONG Kai and LU Li-peng.Theoretical Model of the Large-Scale Eddy Structures in the Near Wake Region Behind an Airfoil[J].Journal of Aerospace Power,2005,20(1):18-21. |
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| Authors: | LONG Kai and LU Li-peng |
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| Institution: | School of Jet Propulsion,Beijing University of Aeronautics and Astronautics,Beijing100083,China;School of Jet Propulsion,Beijing University of Aeronautics and Astronautics,Beijing100083,China |
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| Abstract: | Based on the theory of flow instability and coherent structure,a new theoretical 2-D wave model of the large eddy structures in the near wake region behind an airfoil was proposed.By calculation,we obtained the streamlines and the vorticity contours.They were in good agreement with those of experimental observations.Also the theoretical results of Reynolds Stress variation show good agreement with experimental results.It can be concluded that this model can depict the physical mechanism of the large-scale eddy structures in the near wake region. |
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| Keywords: | aerospace propulsion system airfoil turbulent wake eddy structures 2-D wave |
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