机械动力学

基于计算流体力学计算结果的穿孔管消声器声学性能研究*

  • 郭立新 ,
  • 范威
展开
  • 东北大学机械工程与自动化学院 沈阳 110819
郭立新,男,1968年出生,博士,教授,博士研究生导师。主要研究方向为机械CAE、多物理场有限元分析、车辆动力学与控制。E-mail:lxguo@mail.neu.edu.cn

网络出版日期: 2017-01-05

基金资助

* 国家自然科学基金(51275082)和中央高校基本科研业务费专项资金(N130403009)资助项目; 20160306收到初稿,20160906收到修改稿;

Acoustic Attenuation Performance of Perforated Tube Silencer Based on Computational Fluid Dynamics Results

  • GUO Lixin ,
  • FAN Wei
Expand
  • School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819

Online published: 2017-01-05

摘要

为了准确研究温度与气体流动对某轿车穿孔管消声器声学性能的影响,建立消声器的结构模型与内部流体域模型,并分别划分流体域的计算流体力学(Computational fluid dynamics, CFD)网格与声学有限元网格。利用Fluent软件对消声器内部的温度场与气流速度场进行仿真计算。通过网格映射的方法,将CFD网格上温度、气流速度等数据转移到声学网格中,以CFD计算结果作为声场分析的边界条件,应用声学软件LMS Virtual.Lab Acoustics对消声器内部声场进行数值模拟,得到传递损失曲线。研究结果表明,介质温度升高使传递损失曲线向高频方向移动;存在气体流动时传递损失曲线向低频方向移动,传递损失也有所增加,尤其是在20~200 Hz的低频段内变化较为明显,但总体来看变化幅度不大。

本文引用格式

郭立新 , 范威 . 基于计算流体力学计算结果的穿孔管消声器声学性能研究*[J]. 机械工程学报, 2017 , 53(1) : 79 -85 . DOI: 10.3901/JME.2017.01.079

Abstract

To accurately study acoustic attenuation performance of a car perforated tube silencer under temperature and air flow influence, structural and fluid models are established, computational fluid dynamics (CFD) and acoustic finite element meshes are generated, respectively. CFD software Fluent is used to simulate and calculate temperature and velocity field of the silencer. Mesh mapping approach is employed to transfer CFD meshes with temperature and velocity dates to acoustic meshes. By using CFD results as boundary condition of acoustic field analysis, LMS Virtual.Lab Acoustics software is applied to carry out a numerical simulation on the internal acoustic field of the silencer and obtain its transmission loss curves. The results show that increasing air temperature shift transmission loss curve to higher frequency. The curve is moved to lower frequency as air flow exists and transmission loss is increased, especially within the low frequency brand between 20 Hz and 200 Hz these changes are visible, but overall the range is small.

 

参考文献

[1]    WYLEN G J VSONNTAG R EBORGNAKKE C. Fundamentals of classical thermodynamics[M]. New YorkWiley1985.

 [2]  马大猷. 噪声与振动控制工程手册[M]. 北京:机械工业出版社,2002.

        MA Dayou.Noise and vibration engineering control handbook[M]. BeijingChina Machine Press2002.

 [3]  WANG BWANG Y JXU C. Study of transmission loss on muffler[J]. Research Journal of Applied ScienceEngineering and Technology20135(24)5556-5560.

 [4]  刘海涛,郑四发,但佳壁,等. 带阀消声器阀体开度变化的声学特性分析及应用[J]. 机械工程学报201551(6)135-141.

        LIU HaitaoZHENG SifaDAN Jiabiet al. Acoustic performance analysis of the varying valve opening angle for the muffler with valve and its application[J]. Journal of Mechanical Engineering201551(6)135-141.

 [5]  SULLIVAN J W. A method for modeling perforated tube muffler componentsI. TheoryII. Applications[J]. Journal of the Acoustical Society of America197966(3)772-788.

 [6]  KIM Y HCHOI J WLIM B D. Acoustic characteristics of an expansion chamber with constant mass flow and steady temperature gradient(theory and numerical simulation)[J]. Journal of Vibration and Acoustics1990112(4)460-467.

 [7]  WANG C NCHEN Y NTSAI J Y. The application of boundary element evaluation on a silencer in the presence of a linear temperature gradient[J]. Applied Acoustics200162(6)707-716.

 [8]  LEE S HIH J G. Empirical model of the acoustic impedance of a circular orifice in grazing mean flow[J]. Journal of the Acoustical Society of America2003114(1)98-113.

 [9]  TAN W LRIPIN Z M. Analysis of exhaust muffler with micro-perforated panel[J]. Journal of Vibroengineering201315(2)558-573.

[10]  LMS Virtual.Lab Online Help. Theory for mesh mapping [M/CD]. LeuvenLMS International Corporation2013 [2014-11-01].

[11]  LIU CJI Z L. Computational fluid dynamics-based numerical analysis of acoustic attenuation and flow resistance characteristics of perforated tube silencers[J]. Journal of Vibration and Acoustics2014136(2)021006.

[12]  CHENG YabingGUO HaitaoWAN Nenet al. Design and analysis of the Gemini chain system in dual clutch transmission of automobile[J]. Chinese Journal of Mechanical Engineering201528(1)38-45.

[13]  HAN JianWANG RuiqianWANG Diet al. Effect of wheel load on wheel vibration and sound radiation[J]. Chinese Journal of Mechanical Engineering201528(1)46-54.

[14]  刘晨,季振林,胡志龙. 高温气流对穿孔消声器声学性能的影响[J]. 汽车工程,200830(4)330-334.

        LIU ChenJI ZhenlinHU Zhilong.The effect of high temperature gas flow on the acoustic attenuation performance of perforated tube mufflers[J]. Automotive Engineering200830(4)330-334.

[15]董红亮,邓兆祥,来飞. 考虑温度影响的消声器声学性能分析及改进[J]. 振动工程学报200922(1)70-75.

        DONG HongliangDENG ZhaoxiangLAI Fei.Analysis and improvement of muffler acoustic performance considering temperature influence[J]. Journal of Vibration Engineering200922(1)70-75.

[16]  MUNJAL M L. Acoustic of ducts and mufflers[M]. New YorkWiley2014.

[17]  BROATCH AMARGOT XGIL A. A CFD approach to the computation of the acoustic response of exhaust mufflers[J]. Journal of Computational Acoustics200513(2)301-316.

[18]  陈长征,白晓天,于慎波. 基于三维分析法的椭圆形多级复合式消声器消声性能[J]. 机械工程学报201551(15)104-109.

        CHEN ChangzhengBAI XiaotianYU Shenbo. Acoustic attenuation performance of elliptical multiply combined muffler based on 3D analysis method[J]. Journal of Mechanical Engineering201551(15)104-109.

[19]  XUAN L KGONG J FMING P Jet al. A time-domain finite volume approach for prediction of muffler transmission loss including thermal effects[J]. Journal of Mechanical Engineering Science2014228(1)108-118.

[20]  潘敦银,孙家骐,方丹群,等. 消声器流速特性研究及其应用[J]. 噪声与振动控制1984(5)9-14.

        PAN DunyinSUN JiaqiFANG Danqunet al.Research and application on flow characteristics of muffler[J]. Noise and Vibration Control1984(5)9-14.

[21]刘晨,季振林,徐航手. 穿孔管消声器声学性能三维时域计算及分析[J]. 机械工程学报201248(10)7-13.

        LIU ChenJI ZhenlinXU Hangshou. Three-dimensional time-domain computation and analysis of acoustic attenuation performance of perforated tube silencers[J]. Journal of Mechanical Engineering201248(10)7-13.

文章导航

/