摘要
异形腔体消声器的空气动力性能是其关键技术指标之一。以一类具有内插隔板的消声器为研究对象,利用计算流体力学(CFD),仿真研究了隔板位置、隔板孔位、隔板孔位面积以及隔板数量对压力损失的影响规律,发现隔板位置和隔板孔位对消声器压力损失的影响与其结构存在密切的关系:孔位面积越大,消声器压力损失越小;孔位相对的情况下,每增加一隔板,消声器压力损失增加2~3 kPa。最后结合速度分布云图,对其压力损失成因进行了分析。研究结果为不规则腔体消声器的设计提供了参考依据。
The aerodynamic performances are one of the key technical indexes of the special-shaped cavity mufflers. Taking a kindof muffler with insert-separators as the research object, the effects of the position, the hole, the hole area and the number of the parti-tion on the pressure loss are studied with simulation using Computational Fluid Dynamics (CFD). It was found that there was a closerelationship among the diaphragm position, baffle hole and its structure with the pressure loss of muffler: the larger the hole area, thesmaller was the pressure loss. Under the case of hole position relative to each other, the muffler pressure loss was increased by 2-3 kPafor each additional spacer. Finally, the cause of pressure loss is analyzed by combining the contours of velocity magnitude. The researchresuhs provide a reference for the design of the irregular cavity mufflers.
作者
李乾
李其朋
周素华
隆康
宋德玉
谭雅仙
陈伟强
LI Qian1 , LI Qipeng1 , ZHOU Suhua2, LONG Kang2, SONG Deyu1 , TAN Yaxian2, CHEN Weiqiang2(1. College of Mechanical and Automotive Engineering, Zhejiang University of Science & Technology, Hangzhou Zhejiang 310023, China; 2. Hangcha Group., Ltd., Hangzhou Zhejiang 311305, Chin)
出处
《机床与液压》
北大核心
2018年第5期106-110,共5页
Machine Tool & Hydraulics
基金
科技部国家国际科技合作项目(2015DFR71160)
关键词
消声器
计算流体力学(CFD)仿真
压力损失
速度云图
Muffler
Computational fluid dynamics (CFD) simulation
Pressure loss
Contours of velocity magnitude