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浙江大学学报(工学版)
浙江大学学报(工学版)  2018, Vol. 52 Issue (10): 1894-1900    DOI: 10.3785/j.issn.1008-973X.2018.10.008
机械与能源工程     
进气系统编织管声学性能
瞿熠卿, 郝志勇, 李恒, 郑旭, 周南
浙江大学 能源工程学院, 浙江 杭州 310027
Acoustic performance of fabric pipe in intake system
QU Yi-qing, HAO Zhi-yong, LI Heng, ZHENG Xu, ZHOU Nan
College of Energy Engineering, Zhejiang University, Hangzhou 310027, China
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摘要：

通过建立编织管声学有限元模型，采用Johnson-Champoux-Allard模型描述编织管管壁特性，研究进气系统编织管的声学性能仿真方法.研究Johnson-Champoux-Allard模型中的5个特性参数对编织管声学性能的影响.流阻率的影响最显著，主要表现在低频范围；孔隙率、形状因子、黏性特征长度的影响主要表现在高频范围；热特征长度的影响较小.采用两负载法测量编织管的传递损失，结合仿真研究提取编织管管壁的5个特性参数，通过台架试验测量发动机实际工作状态下安装编织管的进气口噪声.结果表明，编织管在宽频范围内的降噪作用良好，能够有效地衰减高频气流噪声成分.
Abstract:

The wall of the pipe was described with Johnson-Champoux-Allard model by establishing the acoustic finite element model of the fabric pipe. The acoustic simulation method of the fabric pipe in intake system was analyzed. The influence on the acoustic performance brought by the five parameters of Johnson-Champous-Allard model was analyzed. Results show that the flow resistivity has the greatest influence, especially in the low frequency range. The influence of the porosity, the tortuosity and the viscous characteristic length works mainly in the high frequency range. The thermal characteristic length has little effect. The transmission loss of the fabric pipe was measured by experiments based on two-load method. The five parameters were obtained by the simulation and test. The intake noise with the fabric pipe was measured in the bench test. The fabric pipe performs well in attenuating noise in a wide band of frequency, and the airflow induced noise can be effectively attenuated.
收稿日期: 2017-06-07 出版日期: 2018-10-11
CLC:  TK402  
基金资助:

国家自然科学基金资助项目（51705454）
通讯作者: 郑旭,男,讲师.orcid.org/0000-0001-9000-6593.     E-mail: zhengxu@zju.edu.cn
作者简介: 瞿熠卿(1993-),女,硕士生,从事发动机进排气系统NVH的研究.orcid.org/0000-0001-7512-9579.E-mail:quyiqing@zju.edu.cn
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引用本文:

瞿熠卿, 郝志勇, 李恒, 郑旭, 周南. 进气系统编织管声学性能[J]. 浙江大学学报(工学版), 2018, 52(10): 1894-1900.

QU Yi-qing, HAO Zhi-yong, LI Heng, ZHENG Xu, ZHOU Nan. Acoustic performance of fabric pipe in intake system. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2018, 52(10): 1894-1900.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2018.10.008    或    http://www.zjujournals.com/eng/CN/Y2018/V52/I10/1894

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