| 喷流噪声特性与控制研究 |
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| 引用本文： | 郑克扬 桂辛民. 喷流噪声特性与控制研究[J]. 北京航空航天大学学报, 1991, 0(2): 72-78 |
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| 作者姓名： | 郑克扬 桂辛民 |
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| 作者单位： | 北京航空航天大学动力系(郑克扬，桂辛民)，北京航空航天大学动力系(岑拯) |
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| 摘 要： | 本文着重研究喷流噪声机理及工程计算方法。通过实验研究了声功率与喷流速度的关系,表明在Mα>0.4时Lighthill方程和Lilley方程均与实验数据吻合,可分别使用。而Mα<0.4时,均偏差较大,通过本文实验表明,若改为6次方关系较为恰当。文章同时对喷流噪声指向性、谱特性进行了分析。最后对一种引射消声器进行了发展性研究,获得在135dB噪声条件下,降噪17dB的效果。
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| 关 键 词： | 喷流 噪声 消声 |
JET NOISE CHARACTERISTIC AND CONTROL |
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| Zheng Keyang Gui Xinmin Cen Zheng. JET NOISE CHARACTERISTIC AND CONTROL[J]. Journal of Beijing University of Aeronautics and Astronautics, 1991, 0(2): 72-78 |
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| Authors: | Zheng Keyang Gui Xinmin Cen Zheng |
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| Affiliation: | Dept. of Power |
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| Abstract: | Jet noise mechanism and engineering calculation method were investigated. The correlation between sound power and jet vel was established. Experimental results showed that both Lighthill and Lilley equations matched with experimental data very well when Ma>0. 4. The re-seach on the direction sensetiveness and frequency spectrum of jet noise was also conducted by experiment. Finally, a new type of jet noise silencer was proposed and developed, which effectively made jet noise decreased by 17dB. |
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| Keywords: | jet noise noise control. |
| 本文献已被 CNKI 维普 等数据库收录！ |
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