| 旋涡发生器对射流的噪音特性及引射能力的影响 |
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| 引用本文： | 申振华,刘德元.旋涡发生器对射流的噪音特性及引射能力的影响[J].沈阳航空工业学院学报,1994(4):1-7. |
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| 作者姓名： | 申振华 刘德元 |
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| 作者单位： | 沈阳航空工业学院航空工程系 |
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| 摘 要： | 本文在亚音速喷流情况下,就旋涡发生器对其噪声特性及引射能力的影响进行了实验研究。结果发现,在收缩喷管出口处安装的旋涡发生器使出口Ma=0.5的射流噪音大大降低,而出口掺混区长度大大缩短,证明其引射能力大大增强,其中,加装四个角向对称的旋涡发生器的效果最佳。
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| 关 键 词： | 旋涡发生器 引射 射流 航空发动机 |
Effect of Vortex Generators on the Noise and Entrain-ment Characteristics of a Jet |
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| Shen Zhenhua,Liu Deyuan.Effect of Vortex Generators on the Noise and Entrain-ment Characteristics of a Jet[J].Journal of Shenyang Institute of Aeronautical Engineering,1994(4):1-7. |
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| Authors: | Shen Zhenhua Liu Deyuan |
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| Institution: | Shen Zhenhua Liu Deyuan |
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| Abstract: | In this paper, effects of Vortex Generators (V. G. ) on the noise and entrainment characteristics of a subsonic jet were experimentally investigated. The results show that the jet noise of Ma = 0. 5 at the exit was substantially reduced and the length of the mixing area was also shortened drastically.by placing V. G. at the contracted nozzle exit, which shows enhancement of entrainment and in which four V. Gs. symmetrically placed circumferentially have the best effect. |
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| Keywords: | streamwise vortex vortex generator mixing jet noise |
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