| 回转体流噪声相似律的实验研究 |
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| 引用本文： | 李福新,石秀华,张宇文,施仲庆.回转体流噪声相似律的实验研究[J].实验流体力学,1999,13(4):K8103. |
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| 作者姓名： | 李福新 石秀华 张宇文 施仲庆 |
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| 作者单位： | 西北工业大学航海工程学院,陕西,西安,710072 |
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| 摘 要： | 介绍了回转体流噪声实验的方法,并对实验测得的回转体流噪声声功率谱的谱特性进行了分析。测量结果表明:在高频段,回转体流噪声声功率谱按6dB/ 倍频程衰减;且其声功率谱与流速的7 次方成正比。基于本实验,验证了回转体流噪声相似律理论
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| 关 键 词： | 回转体 流噪声 相似律 水洞 |
| 文章编号： | 1007-3124(1999)04-0014-05 |
| 修稿时间： | 1998-12-05 |
Experimental study of flow noise scaling of an axisymmetric body |
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| LI Fu-xin,SHI Xiu-hua,ZHANG Yu-wen,SHI Zhong-qing.Experimental study of flow noise scaling of an axisymmetric body[J].Experiments and Measur in Fluid Mechanics,1999,13(4):K8103. |
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| Authors: | LI Fu-xin SHI Xiu-hua ZHANG Yu-wen SHI Zhong-qing |
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| Abstract: | The present study includes experimental measurement of flow noise of an axisymmetric headform. The results of experimental investigations clearly show that the spectral levels roll off at 6 dB/oct; and at high frequency, the flow noise scales on veloci ty to approximately the 7 power. And the scaling law developed by Li is supported by the experiment. |
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| Keywords: | axisymmetric body flow noise scaling law water tunnel |
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