| 联合射流控制技术的增升效果和机理 |
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| 引用本文： | 刘沛清,旷建敏,屈秋林.联合射流控制技术的增升效果和机理[J].北京航空航天大学学报,2009,35(6):737-740. |
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| 作者姓名： | 刘沛清 旷建敏 屈秋林 |
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| 作者单位： | 北京航空航天大学航空科学与工程学院,北京,100191;北京航空航天大学航空科学与工程学院,北京,100191;北京航空航天大学航空科学与工程学院,北京,100191 |
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| 摘 要： | 数值模拟联合射流翼型的绕流,研究联合射流控制技术的增升效果和机理.主控方程选为定常可压缩流动的质量加权平均N-S方程和S-A湍流模型,使用Fluent软件进行数值求解.计算结果表明,联合射流控制技术可以有效地减小翼型的零升迎角、提高翼型的最大升力系数和失速迎角.通过理论分析,揭示了联合射流控制技术的增升机理,即通过增加翼型上表面的流速从而增大绕翼型的环量,通过向边界层内注入能量从而延迟翼型大迎角下的流动分离.
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| 关 键 词： | 联合射流 流动控制 增升效果 增升机理 数值模拟 |
| 收稿时间： | 2008-05-07 |
Effect and mechanism of lift-enhancement of the co-flow jet technology |
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| Liu Peiqing,Kuang Jianmin,Qu Qiulin.Effect and mechanism of lift-enhancement of the co-flow jet technology[J].Journal of Beijing University of Aeronautics and Astronautics,2009,35(6):737-740. |
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| Authors: | Liu Peiqing Kuang Jianmin Qu Qiulin |
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| Institution: | School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| Abstract: | The effect and mechanism of lift-enhancement of the co-flow jet technology was investigated by numerically simulating the flow around a co-flow jet airfoil.The Farve-averaged Navier-Stokes equation of unsteady compressible flow and the S-A turbulence model were solved by Fluent software.The results show that the co-flow jet technology remarkably reduces the zero-lift angle of attack of the airfoil,and increases the maximum lift coefficient and the stall angle of attack.The mechanism of lift-enhancement of t... |
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| Keywords: | co-flow jet flow control effect of lift-enhancement mechanism of lift-enhancement numerical simulation |
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