| 对旋轴流风机降噪措施的实验研究 |
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| 引用本文： | 冯毓诚,赵秀华.对旋轴流风机降噪措施的实验研究[J].航空动力学报,1995,10(2):113-116,197. |
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| 作者姓名： | 冯毓诚 赵秀华 |
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| 作者单位： | 北京航空航天大学;北京航空航天大学 |
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| 摘 要： | 针对一台自行设计的高效对旋轴流风机噪声高的缺点, 分析了主要噪声源及噪声的频率特征；并用消声声衬及适当增加管道长度的方法进行了大量的实验研究, 取得了良好的效果。总声压级由101dB(A)降至88dB(A)。
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| 关 键 词： | 频率特性 噪声控制 轴流式鼓风机 |
| 收稿时间： | 5/1/1994 12:00:00 AM |
| 修稿时间： | 8/1/1994 12:00:00 AM |
EXPERIMENTAL RESEARCH ON NOISE REDUCTION OF A COUNTER ROTATING VENTILATOR |
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| Feng Yucheng and Zhao Xiuhua.EXPERIMENTAL RESEARCH ON NOISE REDUCTION OF A COUNTER ROTATING VENTILATOR[J].Journal of Aerospace Power,1995,10(2):113-116,197. |
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| Authors: | Feng Yucheng and Zhao Xiuhua |
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| Institution: | 4the Dept.Beijing University of Aeronautics and Astronautics,Beijing 100083;4the Dept.Beijing University of Aeronautics and Astronautics,Beijing 100083 |
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| Abstract: | A counter rotating ventilator with high efficiency has been made,but its noise level is too high.This paper analyzes the noise generation and noise frequency characteristics.A lot of noise experimental researches on noise suppression have been carried out successfully by the aid of acoustic liner or appropriate increase of the duct length.As a result,overall sound pressure level is reduced from 101dB(A) to 88dB(A). |
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| Keywords: | Axial ventilator Frequency characteristic Noise control |
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