消声器结构对气流再生噪声的影响

Experimental Study on Air Flow Regeneration Noise with Muffler Structure

设计了3种具有代表性的抗性消声器,并进行了试验。试验结果表明消声器结构对气流再生噪声以及消声量有影响。

Air flow muffler can change the regular of transmission and attenuation of sound, on the other hand, it can make an additional noise in muffler, that is air flow regeneration noise. Sometimes it can offset noise elimination of muffler, furthermore, it can make muffler lose efficacy. Three kinds of representative resistance mufflers were designed in this paper, and the experiments were done. The results showed that muffler structure had influence on air flow regeneration noise and noise elimination value. And the air flow regeneration noise value was estimated. Some advices were given here in the paper to structure design in order to improve the muffler.