摘要
针对某型消声器,通过仿真软件GT-Power,分析插入管消声器排气入口直径(43~63 mm)和进气管直径(38~58 mm)的耦合作用对消声器压阻损失的等效分布规律和等效压阻损失下的传递损失变化规律。研究结果显示:插入管单元耦合下的压阻损失变化率在压阻损失较高和较低的区域较大。在插入管单元耦合对消声器压阻损失影响中,等效压阻损失越大,曲线在中高频上的传递损失变化范围也越大;在等效压阻损失较小的区域,基本结构单元对等效压阻损失影响更为敏感;等效压阻越大,其传递损失变化范围也越大,在中频段620~850 Hz更为明显。最后建立综合声学性能和空气动力性能的评价体系,得到了基于边界条件较原消声器性能更优的结构参数组合区域。
For a certain type of muffler, through the simulation software GT-Power, the equivalent distribution law of the coupling effect of the insertion tube muffler exhaust inlet diameter( 43~63 mm) and intake-tube diameter( 38~58 mm) on the piezoresistive loss of the muffler and the transmission loss under the equivalent piezoresistive loss were analyzed. The results show that the change rate of piezoresistive loss under the coupling of the inserted tube unit is larger in the area with higher and lower piezoresistive loss. In the influence of insertion tube unit coupling on the piezoresistive loss of the muffler, the larger the equivalent piezoresistive loss is, the larger the transmission loss range of the curve at medium and high frequencies is. In the region with small equivalent piezoresistive loss, the basic structural unit is more sensitive to the influence of equivalent piezoresistive loss. The greater the equivalent piezoresistive is, the greater the variation range of transmission loss is, especially in the middle frequency band 620~850 Hz. Finally, the evaluation system of comprehensive acoustic performance and aerodynamic performance was established, and the structural parameter combination area with better performance than the original muffler based on boundary conditions was found.
作者
曹胡泉
曾东建
王鹏
尹川
陈春云
吕高全
CAO Huquan;ZENG Dongjian;WANG Peng;YIN Chuan;CHEN Chunyun;LYU Gaoquan(Key Laboratory of Fluid and Power Machinery,Ministry of Education,Xihua University,Chengdu Sichuan 610039,China;Mianyang Xinchen Engine Co.,Ltd.,Mianyang Sichuan 621000,China)
出处
《机床与液压》
北大核心
2023年第2期32-39,共8页
Machine Tool & Hydraulics
基金
四川省科技厅青年科技创新研究团队项目(1321300)。
关键词
压阻损失
传递损失
耦合作用
消声器
Piezoresistive loss
Transmission loss
Coupling effect
Muffler
