阵列式消声器仿真模型研究与性能分析

作者:王笑笑 樊洪明 李澳楠
单位:北京工业大学
摘要:为研究新型阵列式消声器的消声性能和空气动力性能,选取3台消声器进行试验及仿真模型研究。建立了消声器压力损失数学模型和基于管道声模态的插入损失数学模型,考虑了穿孔板的影响,并通过试验验证了模型。在此基础上,分析了气流在消声器中的流动情况及气流速度、消声器结构对插入损失的影响。结果表明:消声器入口处噪声值较大时,0~10 m/s的气流速度对插入损失影响不大;随吸声体长度增加和间距减小,插入损失增大。
关键词:阵列式消声器噪声插入损失压力损失气流速度管道声模态吸声体仿真模型
作者简介:王笑笑,女,1997年生,在读硕士研究生100124北京市朝阳区平乐园100号北京工业大学,E-mail:wangxx@emails.bjut.edu.cn;
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参考文献[1] 蔡超,宫镇.内燃机排气消声器声传递矩阵的研究[J].汽车技术,1994(4):12-16,31.

[2] CROCKER M J.Prediction of transmission loss in mufflers by the finite-element method[J].The journal of the acoustical society of America,1975,57(1):144- 148.

[3] KIRBY R,AMOTT K,WILLIAMS P T,et al.On the acoustic performance of rectangular splitter silencers in the presence of mean flow[J].Journal of sound and vibration,2014,333(24):6295- 6311.

[4] TANAKA T,FUJIKAWA T,ABE T,et al.A method for the analytical prediction of insertion loss of a two-dimensional muffler model based on the transfer matrix derived from the boundary element method[J].Journal of vibration and acoustics,1985,107(1):86.

[5] 赵松龄.噪声的降低与隔离:下册[M].上海:同济大学出版社,1989:9- 11.

[6] 余江凌,俞悟周.片式消声结构消声量的计算模型比较[C]//2015年上海-西安声学学会第四届声学学术交流会论文集,2015:4.

[7] 沈保罗.片式消声器的设计及其在环境噪声控制中的应用[J].应用声学,1996,15(3):18- 22.

[8] 马家义,袁兆成.消声器内部流场及其对消声性能影响[J].车用发动机,2007(5):31- 34.

[9] 谷敏杰.列车空调风道用片式消声器的性能研究[D].青岛:青岛理工大学,2010:21- 30.

[10] 马世宽.片式消声器内吸声材料及传递损失仿真方法研究[D].青岛:青岛大学,2017:17- 47.

[11] 邹刚.阵列式结构消声器的通风阻力特性研究[C]//2018年全国声学大会论文集Ⅰ,2018:32- 33.

[12] 北京市设备安装工程公司.全国通用通风管道计算表[M].北京:中国建筑工业出版社,1977:4.

[13] 郭军丽,吴亚锋,徐俊伟,等.基于管道声模态的消声器传递损失计算[J].噪声与振动控制,2013,33(5):179- 183.

[14] 杜功焕,朱哲民,龚秀芬.声学基础[M].2版.南京:南京大学出版社,2001:279- 283.

[15] 中国科学院声学研究所,深圳中雅机电实业有限公司,同济大学,等.声学管道消声器和风道末端单元的实验室测量方法插入损失、气流噪声和全压损失:GB/T 25516—2010[S].北京:中国标准出版社,2011:1- 36.
Simulation model research and performance analysis of array mufflers
Wang Xiaoxiao Fan Hongming Li Aonan
(Beijing University of Technology)
Abstract: In order to study the acoustic attenuation and aerodynamic performance of the new type of array muffler, three mufflers are selected for the test and simulation model research. The mathematical models of muffler pressure loss and insertion loss based on the method of pipeline acoustic mode are established, in which the influence of the perforated plate is considered, and the model is verified by test results. On this basis, the flow of airflow in the muffler and the influences of airflow velocity and muffler construction on the insertion loss are analysed. The results show that when the noise value at the muffler entrance is large, the airflow velocity of 0 to 10 m/s has little effect on the insertion loss. The insertion loss increases with the increase of the length of the sound absorber and the decrease of the spacing.
Keywords: array muffler; noise; insertion loss; pressure loss; airflow velocity; pipeline acoustic mode; sound absorber; simulation model;
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