直通穿孔管消声器与横流穿孔管消声器消声性能对比研究  

The Contrast of Straight-through Perforated Tube Mufflers with Transverse-flow Perforated Tube Mufflers

作　　者：马勇[1] 钟成 张洪涛[1] 

机构地区：[1]广西工学院汽车工程系,广西柳州545006 [2]柳州五菱柳机动力有限公司,广西柳州545000

出　　处：《农业装备与车辆工程》2012年第1期40-42,45,共4页Agricultural Equipment & Vehicle Engineering

摘　　要：采用三维声学软件Sysnoise对比分析直通穿孔消声器与横流穿孔消声器的传递损失。应用Mechel公式降低穿孔管消声器模型的复杂性,通过施加阻尼边界条件对穿孔管进行模拟。得出结论:穿孔率和穿孔半径相同时,横流穿孔管消声器的消声性能明显优于直通穿孔管消声器,但是横流穿孔消声器的阻力损失比较大。通过本研究可以为消声器的设计和选用提供依据。In this paper,comparisons of transmission loss between straight-through perforated tube mufflers and transverse-flow perforated tube mufflers is analyzed by 3-Dimension acoustic software-Sysnoise. Mechel formula is applied to reduce the complexity of the model of perforated tube mufflers, and impedance boundary conditions is imposed. The results reflect：at the same porosity and perforation diameter,the acoustic attenuation performance of transverse-flow perforated tube muffler is better than straight-through perforated tube muffler, but the resistance loss of transverse-flow perforated tube muffler is larger.

关 键 词：传递损失 SYSNOISE 穿孔管 消声器 边界条件 

分 类 号：U464.134.4[机械工程—车辆工程]