Prediction and analysis of acoustic performance of annular bladder water silencer
As an effective noise control device,water silencer is widely used in water pipeline system.The modal matching method and finite element method are used to simulate the acoustic performance of annular bladder water silencer,the principle of acoustic characteristics of bladder water silencer are analyzed,and the influence of the relationship between the characteristic acoustic impedance of different media of the bladder water silencer on the acoustic performance are studied.The results show that the gas plays a major role in reflection and attenuation of acoustic wave transmission in bladder water silencer due to impedance mismatch.With the increase of the characteristic impedance of rubber,the rubber will play a certain role in blocking the acoustic wave transmitted from the water.When the gas volume is compressed,the reflection and attenuation effect of the gas on the acoustic wave will gradually weaken,which will reduce the overall amplitude of the transmission loss curve of the bladder water silencer and weaken the acoustic attention performance.
Annular bladderWater silencerAcousticsMode matching methodCharacteristic acoustic impedanceTransmission loss
万方数据
维普
