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*

doi:10.3901/JME.2017.01.079

摘要/Abstract

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。

关键词: CFD计算结果, 传递损失, 声学性能, 网格映射, 穿孔管消声器

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.

Key words: acoustic performance, computational fluid dynamics results, mesh mapping, transmission loss, perforated tube silencer

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.

GUO Lixin, FAN Wei. Acoustic Attenuation Performance of Perforated Tube Silencer Based on Computational Fluid Dynamics Results[J]. Journal of Mechanical Engineering, 2017, 53(1): 79-85.

参考文献

[1] WYLEN G J V，SONNTAG R E，BORGNAKKE C. Fundamentals of classical thermodynamics[M]. New York：Wiley，1985.

[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]. Beijing：China Machine Press，2002.

[3] WANG B，WANG Y J，XU C. Study of transmission loss on muffler[J]. Research Journal of Applied Science，Engineering and Technology，2013，5(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，2015，51(6)：135-141.

LIU Haitao，ZHENG Sifa，DAN Jiabi，et al. Acoustic performance analysis of the varying valve opening angle for the muffler with valve and its application[J]. Journal of Mechanical Engineering，2015，51(6)：135-141.

[5] SULLIVAN J W. A method for modeling perforated tube muffler components：I. Theory，II. Applications[J]. Journal of the Acoustical Society of America，1979，66(3)：772-788.

[6] KIM Y H，CHOI J W，LIM 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 Acoustics，1990，112(4)：460-467.

[7] WANG C N，CHEN Y N，TSAI J Y. The application of boundary element evaluation on a silencer in the presence of a linear temperature gradient[J]. Applied Acoustics，2001，62(6)：707-716.

[8] LEE S H，IH J G. Empirical model of the acoustic impedance of a circular orifice in grazing mean flow[J]. Journal of the Acoustical Society of America，2003，114(1)：98-113.

[9] TAN W L，RIPIN Z M. Analysis of exhaust muffler with micro-perforated panel[J]. Journal of Vibroengineering，2013，15(2)：558-573.

[10] LMS Virtual.Lab Online Help. Theory for mesh mapping [M/CD]. Leuven：LMS International Corporation，2013 [2014-11-01].

[11] LIU C，JI Z L. Computational fluid dynamics-based numerical analysis of acoustic attenuation and flow resistance characteristics of perforated tube silencers[J]. Journal of Vibration and Acoustics，2014，136(2)：021006.

[12] CHENG Yabing，GUO Haitao，WAN Nen，et al. Design and analysis of the Gemini chain system in dual clutch transmission of automobile[J]. Chinese Journal of Mechanical Engineering，2015，28(1)：38-45.

[13] HAN Jian，WANG Ruiqian，WANG Di，et al. Effect of wheel load on wheel vibration and sound radiation[J]. Chinese Journal of Mechanical Engineering，2015，28(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，2008，30(4)：330-334.

LIU Chen，JI Zhenlin，HU Zhilong. The effect of high temperature gas flow on the acoustic attenuation performance of perforated tube mufflers[J]. Automotive Engineering，2008，30(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，2009，22(1)：70-75.

DONG Hongliang，DENG Zhaoxiang，LAI Fei. Analysis and improvement of muffler acoustic performance considering temperature influence[J]. Journal of Vibration Engineering，2009，22(1)：70-75.

[16] MUNJAL M L. Acoustic of ducts and mufflers[M]. New York：Wiley，2014.

[17] BROATCH A，MARGOT X，GIL A. A CFD approach to the computation of the acoustic response of exhaust mufflers[J]. Journal of Computational Acoustics，2005，13(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，2015，51(15)：104-109.

CHEN Changzheng，BAI Xiaotian，YU Shenbo. Acoustic attenuation performance of elliptical multiply combined muffler based on 3D analysis method[J]. Journal of Mechanical Engineering，2015，51(15)：104-109.

[19] XUAN L K，GONG J F，MING P J，et al. A time-domain finite volume approach for prediction of muffler transmission loss including thermal effects[J]. Journal of Mechanical Engineering Science，2014，228(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 Dunyin，SUN Jiaqi，FANG Danqun，et al. Research and application on flow characteristics of muffler[J]. Noise and Vibration Control，1984(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，2012，48(10)：7-13.

LIU Chen，JI Zhenlin，XU Hangshou. Three-dimensional time-domain computation and analysis of acoustic attenuation performance of perforated tube silencers[J]. Journal of Mechanical Engineering，2012，48(10)：7-13.

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^*

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

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 3

编辑推荐

Metrics

本文评价

[1]	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]. , 2012, 48(10): 7-13.
[2]	岳贵平;张义民. 基于管口噪声灵敏度分析的进气系统结构改进[J]. , 2010, 46(23): 77-81.
[3]	黄曌宇;蒋伟康;刘春慧;靳海水;周易. 利用单吸气储液器改善双缸压缩机的声学性能[J]. , 2008, 44(7): 139-142.