【作者】 赵洋； 柳贡民；

【Author】 ZHAO Yang;LIU Gong-min;School of Power and Energy Engineering,Harbin Engineering University;

【机构】 哈尔滨工程大学动力与能源工程学院；

【摘要】 海水消声器可以使特定窄频带发生衰减。系统中流体的流动会改变消声器的声学属性,从而改变子系统的传递损失。本数值模拟研究了装有扩张式消声器主管道中引入平均流动时的传递损失。结果表明:在有流情况下海水消声器的传递损失峰值有所降低,消声频带向低频方向移动,流动越强对消声器低频段的性能影响更大。更多还原

【Abstract】 Seawater muffler can attenuate specific narrow frequency band.The flow of fluid in the system will change the acoustic properties of the muffler,thus changing the transmission loss of the subsystem.This numerical simulation studies the transmission loss when the average flow is introduced into the main pipe with an expandable muffler.The results show that the peak value of transmission loss of seawater muffler decreases in the presence of current,and the muffler frequency band moves to the low frequency direction.The stronger the flow,the greater the influence on the performance of muffler in low frequency band.更多还原