通流面积可变型消声器及其在管道噪声控制中的应用  

The Variable Flow-Area Resonator and Its Application in Noise Control of Pipe

作　　者：任宝生[1] 

机构地区：[1]西安交通大学

出　　处：《应用力学学报》1992年第1期77-83,139,共7页Chinese Journal of Applied Mechanics

摘　　要：对利用共振消声器进行管道噪声控制问题作了理论分析,讨论了通流面积可变型消声器的特性及在管道噪声消声控制中的应用问题,消声控制实验的消声量约38dB.In this paper, the auto-tune resonator is made, whose natural frequency is controlled by means of the change of the flow-area of its neck. This resonator has a wide band of frequency in reducing noise. Noise level of a pipe of compressor or fan with variable rotating speed can be reduced by the resonator. Corresponding auto-adjusting system has also been constructed, by use of this system, the noise level of the pipe reduced by 38 dB when the exciting frequeney shifts.

关 键 词：噪声控制 管道噪声 共鸣器 消声器 

分 类 号：TB535[理学—物理]