| 离心风机吸声蜗壳结构的数学物理模型及实验验证 |
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| 引用本文： | 顾媛媛,袁民建,毛义军,祁大同.离心风机吸声蜗壳结构的数学物理模型及实验验证[J].西安交通大学学报,2011,45(1):83-88. |
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| 作者姓名： | 顾媛媛 袁民建 毛义军 祁大同 |
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| 作者单位： | 西安交通大学能源与动力工程学院,710049,西安 |
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| 基金项目： | 国家自然科学基金资助项目(50976084) |
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| 摘 要： | 为了降低离心风机气动噪声,设计了一种由穿孔蜗板、吸声材料、微穿孔板和空腔组成的吸声蜗壳结构,并采用声电类比方法建立了吸声蜗壳的数学物理模型.基于该模型分析发现:采用一定厚度的吸声材料可以在大约1～8 kHz频率范围内对气动噪声取得较好的吸声效果,适当增加吸声材料厚度可使得具有较高吸声系数的频率范围向低频方向适当拓宽,加...
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| 关 键 词： | 离心风机 气动噪声 蜗壳 吸声材料 |
Mathematical-Physical Model of Noise-Absorbing Volute of Centrifugal Fan and Experimental Validation |
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| GU Yuanyuan,YUAN Minjian,MAO Yijun,QI Datong.Mathematical-Physical Model of Noise-Absorbing Volute of Centrifugal Fan and Experimental Validation[J].Journal of Xi'an Jiaotong University,2011,45(1):83-88. |
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| Authors: | GU Yuanyuan YUAN Minjian MAO Yijun QI Datong |
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| Institution: | (School of Energy and Power Engineering,Xi′an Jiaotong University,Xi′an 710049,China) |
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| Abstract: | To reduce the aerodynamic noise of centrifugal fans,a mathematical-physical model was established to analyze the property of the sound-absorption volute of a centrifugal fan,which is composed of a perforated volute plate,an acoustic-absorbing liner,a micro-perforated plate and a cavity.The analysis with this model indicates that the absorbing liner of certain thickness would yield fine effect absorbing aerodynamic noise of about 1-8 kHz.The frequency range with higher coefficient values would be widened tow... |
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| Keywords: | centrifugal fan aerodynamic noise volute acoustic-absorbing liner |
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