| 喷嘴噪声性能的实验研究 |
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| 引用本文： | 陈谋志,秦军,李伟锋,刘海峰,于遵宏.喷嘴噪声性能的实验研究[J].华东理工大学学报(自然科学版),2005,31(4):524-527. |
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| 作者姓名： | 陈谋志 秦军 李伟锋 刘海峰 于遵宏 |
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| 作者单位： | 华东理工大学资源与环境工程学院,上海,200237 |
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| 基金项目： | 国家重点基础研究发展规划资助项目（G1999022103） |
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| 摘 要： | 应用麦克风、频谱分析软件等相关工具，研究了三通道喷嘴无水条件下的噪声性能。实验结果表明：随着三通道气流马，赫数逐渐增大，噪声强度随之增大，峰值频率基本不变，但能量变强；随着一通道气流马赫数增大，噪声强度先减小后增大，并且频谱图上出现高频峰，该峰能量逐渐变强；改变一、三通道气体喷口流速比，噪声强度呈现减小、增大、减小的非均匀变化趋势，峰值频率逐渐变大。
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| 关 键 词： | 喷嘴 噪声分析 噪声强度 峰值频率 |
| 文章编号： | 1006-3080（2005）04-0524-04 |
| 收稿时间： | 2004-08-20 |
| 修稿时间： | 2004年8月20日 |
Noise Characteristics of 3-Channel Nozzel |
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| CHEN Mou-zhi,QIN Jun,LI Wei-feng,LIU Hai-feng,YU Zun-hong.Noise Characteristics of 3-Channel Nozzel[J].Journal of East China University of Science and Technology,2005,31(4):524-527. |
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| Authors: | CHEN Mou-zhi QIN Jun LI Wei-feng LIU Hai-feng YU Zun-hong |
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| Abstract: | The noise characteristics of 3-channelusing microphone and spectrum analysis software.nozzle were investigated, in the absence of water,When Ma in channel 3 increased, noise intensity increased monotonously; frequency of the peak remained the same, but its power became stronger. When Ma in channel 1 increased, noise intensity decreased initially but then increased; the high frequency peak appeared, and its power became stronger. Changing the ratio of air velocity in nozzle of channel 1 to channel 3, the noise intensity decreased, then increased, and decreased again~ frequency of peak increased. |
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| Keywords: | nozzle noise analysis noise intensity frequency of peak |
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