风机叶片噪声的有源消声研究  

A Study of Active Control of Blade Rotation Noise of a Fan

作　　者：任宝生[1] 张克猛[1] 

机构地区：[1]西安交通大学

出　　处：《应用力学学报》1999年第2期75-80,共6页Chinese Journal of Applied Mechanics

基　　金：机械结构强度与振动国家重点实验室开放基金

摘　　要：建立了风机转动时产生的动叶气动噪声和静叶干涉噪声的声学模型，推导了声功率的表达式，根据最小辐射声功率准则导出了有源消声控制方程。The acoustic model of blade rotation noise and rotor stator interaction noise of fan's rotation has been deduced, also, the expression of sound power has been done. Based on the minimum sound power radiated theory, the active control equation of resource attenuation has been deduced and the influence of parameters of secondary source, such as radius and the number of secondary point source, on attenuation effect has been discussed.

关 键 词：噪声 有源控制 风机 叶片 

分 类 号：TB533.1[理学—物理]