| 基于斜出口合成射流激励器的边界层分离控制 |
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| 引用本文： | 李斌斌,程克明,顾蕴松.基于斜出口合成射流激励器的边界层分离控制[J].南京航空航天大学学报,2009,41(3). |
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| 作者姓名： | 李斌斌 程克明 顾蕴松 |
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| 作者单位： | 南京航空航天大学航空宇航学院,南京,210016 |
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| 摘 要： | 设计了一种新型斜出口合成射流激励器,采用粒子图像激光测速仪(PIV)流场测试技术对其非定常瞬态与时均流场结构进行了研究.结果表明,右斜出口合成射流激励器工作时的质量均来源于激励器出口左侧.出口右侧由于射流的附壁效应和相邻出口间的相互"接力"诱导作用,激励器出口右侧呈现为更强的沿壁面切向方向的动量输运特性,这种流动特性更加有利于进行边界层分离流动的控制.最后,采用该合成射流激励器对逆压梯度下的边界层分离控制进行了应用尝试,实现边界层分离流动控制的目的.
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| 关 键 词： | 边界层 流动控制 分离 |
Boundary Layer Separation Control Using Beveled Orifice of Synthetic Jet Actuator |
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| Li Binbin,Cheng Keming,Gu Yunsong.Boundary Layer Separation Control Using Beveled Orifice of Synthetic Jet Actuator[J].Journal of Nanjing University of Aeronautics & Astronautics,2009,41(3). |
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| Authors: | Li Binbin Cheng Keming Gu Yunsong |
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| Institution: | College of Aerospace Engineering;Nanjing University of Aeronautics & Astronautics;Nanjing;210016;China |
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| Abstract: | A new kind of beveled orifice of synthetic jet actuator is designed and particle image velocimetry(PIV) measurements of unsteady flow field near the orifice of the synthetic jet actuator are studied.The phase-locked instantaneous flow maps and ensemble-averaging flow field are given.The investigation results indicate that for the right beveled orifice synthetic jet actuator,a vortex is formed at the left sharp edge of the orifice and the wall-attachment effect is formed at the right edge of the orifice.Duri... |
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| Keywords: | boundary layers flow control separation |
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