高速列车司机室内气动噪声预测

肖友刚; 田红旗; 张洪

高速列车司机室内气动噪声预测

肖友刚^{1, 2,},
田红旗¹,
张洪²

1.
中南大学轨道交通安全教育部重点实验室, 湖南长沙 410075
2.
中国南车集团青岛四方机车车辆股份有限公司博士后科研工作站, 山东青岛 266111

基金项目:

湖南省自然科学基金项目 07JJ3098

中国博士后科学基金项目 2005038227

山东省博士后科研项目 200601014

详细信息

作者简介:
肖友刚(1970-)，男，湖南武冈人，中南大学副教授，博士后

中图分类号: U260.16
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- 被引次数: 0
出版历程
- 收稿日期: 2007-12-03
- 刊出日期: 2008-06-25

Prediction of interior aerodynamic noise of high-speed train cab

1.
Key Laboratory for Traffic Safety on Track of Ministry of Education, Central South University, Changsha 410075, Hunan, China
2.
Postdoctoral Workstation, CSR Sifang Locomotive and Rolling Stock Co., Ltd., Qingdao 266111, Shandong, China

More Information

Author Bio:
Xiao You-gang(1970-), male, PhD, associate professor, +86-731-2655345, csuxyg@163.com

摘要

摘要: 为了降低司机室内的噪声, 采用大涡模拟法计算了高速列车车头曲面的脉动压力, 将脉动压力作为头车司机室有限元分析的激励载荷, 通过谐响应分析求得司机室壁板的振动速度, 将振动速度作为司机室声场边界元模型的激励条件, 求出了司机室内的气动噪声在不同频率点的声压分布。计算结果表明: 司机室内的声压级在52.3~58.8dB (A) 之间变化, 声压级较大点位于司机室前窗玻璃向车顶过渡处及纵向中截面型线附近, 且在50~315Hz之间, 声压幅值较大; 司机室内的气动噪声主要是低频噪声, 对纵向中截面型线采取更平滑的过渡形式, 可降低司机室内的气动噪声。
- 车辆工程 /
- 高速列车 /
- 司机室 /
- 脉动压力 /
- 气动噪声
Abstract: In order to decrease the noise in train cab, the fluctuation pressures of head curved surface of high-speed train were calculated by using large eddy simulation method, which were exerted on the finite element model of train cab as excitement load, the vibration speeds of cab plates were obtained by using harmonic response analysis, and were taken as the excitement condition of acoustic boundary element model of train cab, and the interior aerodynamic noises at different frequencies were attained by using acoustic analysis. Computation result shows that the aerodynamic noises levels in cab change from 52.3 to 58.8 dB (A), at the transitional place from cab windowpane to train roof and near the largest outline of head longitudinal section, the noise press level (SPL) of field points are greater, the noises are dominant ranging from 50 to 315 Hz; the aerodynamic noises in cab are low frequency noises mainly, if the largest outline of head longitudinal section is smoother, the noises will be reduced.
- vehicle engineering /
- high-speed train /
- cab /
- fluctuation pressure /
- aerodynamic noise

HTML全文

图 1 四边形贴体网格

Figure 1. Quadrilateral body-fitted grids

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图 2 脉动压力级曲线

Figure 2. Curves of fluctuation pressure levels

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图 3 声学边界元模型

Figure 3. Acoustic boundary element model

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图 4 声场观察截面位置

Figure 4. Situations of observation sections in acoustic field

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图 5 声压级分布

Figure 5. SPL distribution

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图 6 声压级的1/3倍频程频谱

Figure 6. 1/3 octave band amplitudes of SPL

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图 7 在125 Hz时的声压级分布

Figure 7. SPL distribution at 125 Hz

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图 8 在160 Hz时的声压级分布

Figure 8. SPL distribution at 160 Hz

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