| 泵喷推进器导管对噪声传播特性的影响 |
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| 引用本文： | 刘敏,张宁,李新汶,周友明.泵喷推进器导管对噪声传播特性的影响[J].舰船科学技术,2011,33(8). |
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| 作者姓名： | 刘敏 张宁 李新汶 周友明 |
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| 作者单位： | 武汉第二船舶设计研究所,湖北武汉,430064 |
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| 摘 要： | 对泵喷推进器导管内外声场采用有限元方法进行了建模及计算,无限远场采用无限元技术进行建模,在考虑声振耦合的条件下,在频率域内从测量点频谱、特征频率声场及噪声指向性等方面分析了特定噪声源下导管对噪声的传播影响。研究表明,导管对低频噪声无明显影响,对较高频噪声能改变其声场指向性及降低其声压级。本文研究成果对进一步进行导管声学设计具有重要指导意义。
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| 关 键 词： | 泵喷推进器 导管 声传播 |
Studies of the effects of pump-jet propeller duct on noise propagation characteristic |
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| LIU Min,ZHANG Ning,LI Xin-wen,ZHOU You-ming.Studies of the effects of pump-jet propeller duct on noise propagation characteristic[J].Ship Science and Technology,2011,33(8). |
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| Authors: | LIU Min ZHANG Ning LI Xin-wen ZHOU You-ming |
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| Institution: | LIU Min,ZHANG Ning,LI Xin-wen,ZHOU You-ming(Wuhan Second Ship Design and Research Institute,Wuhan 430064,China) |
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| Abstract: | The inner and exterior sound-fields of pump-jet propeller duct are modeled and numerical simulated using finite-element method and the infinite sound-field are modeled with infinite-element method.The effects of pump-jet propeller duct on noise propagation characteristic are studied by spectrum of field points,contours of sound pressure field and SPL directivity in frequency domain with the effects of vibration-acoustic coupled characteristics.The results shows that the duct has not distinct effects on nois... |
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| Keywords: | pump-jet propeller duct noise propagation |
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