插入式阻性消声筒在船用通风管道内的消声性能研究  

Research on Noise Reduction Performance of Inserted Resistive Muffler Tubes in Ship Ventilation Pipelines

作　　者：刘悦 温华兵 张帆 吴俊杰 黄伟稀 LIU Yue;WEN Huabing;ZHANG Fan;WU Junjie;HUANG Weixi(School of Energy and Power,Jiangsu University of Science and Technology,Zhenjiang 212003,Jiangsu China;China Ship Science Research Center,Wuxi 214082,Jiangsu China)

机构地区：[1]江苏科技大学能源与动力学院,江苏镇江212003 [2]中国船舶科学研究中心,江苏无锡214082

出　　处：《噪声与振动控制》2019年第6期127-132,共6页Noise and Vibration Control

摘　　要：以船舶典型通风管道为对象设计8种插入式阻性消声筒,通过仿真和实验分析消声筒的消声性能。在100 Hz至5000Hz频率范围内,基于管道结构和声腔的单位模态密度划分有效频率分析范围,分别采用有限元法(FEM)、统计能量法(SEA)以及混合法(FE-SEA)计算各频段下消声筒的传递损失和插入损失,通过实验验证了消声筒的消声性能。结果表明:仿真与实验结果相接近,验证了所运用数值仿真方法的可行性,其中方案N6中在1000Hz的传递损失达到10 dB,消声效果良好。Eight kinds of inserted resistive muffler tubes are designed for the typical ventilation ducts of ships.The silencing performance of the muffler tubes is analyzed through simulation and experimental tests.In the frequency domain of 100 Hz-5000 Hz,the effective frequency analysis range is divided based on the unit modal density of the pipe structure and the acoustic cavity.The insertion losses and the transmission losses of the muffler tube in different frequency ranges are calculated respectively by finite element method(FEM),statistical energy method(SEA)and hybrid method(FE-SEA).Then,the noise reduction performance of the muffler tubes is verified by experiments.The results show that the simulation results are close to experimental results.The feasibility of the numerical simulation method is verified.The transmission loss of the N6 scheme at 1000 Hz reaches 10 dB,which has a good sound absorption effect.

关 键 词：声学 管道噪声 阻性消声 管道消声 降噪实验 

分 类 号：TB535[理学—物理]