An Optimization of Vehicle Rear-view Mirror and Wiper Wind Noise

被引：0
|
作者：
Hou Z. [1 ]
Fu N. [1 ]
Huang Y. [1 ]
Xu T. [1 ]
Chen R. [2 ]
Shen Y. [2 ]
机构：
[1] Shanghai General Motors Wuling Technical Design Center, Liuzhou
[2] Shanghai Hikey-Sheenray Information Technology Corp., Ltd., Shanghai
来源：
Chen, Ruifeng (chenrf@hikeytech.com) | 2018年 / SAE-China卷 / 40期
关键词：
Numerical simulation; Rear view mirror; Road test; Wind noise optimization; Wiper;
D O I：
10.19562/j.chinasae.qcgc.2018.012.014
中图分类号：
学科分类号：
摘要：
The external flow field and the interior noise of the passenger compartment of a SUV are calculated by computational fluid dynamics and statistical energy method respectively, and the sound pressure level (SPL) curve at driver's head region is obtained. Based on the simulation results of original vehicle model, rear view mirror and wiper are modified, and the noise evaluation and comparison between before and after modifications are carried out by numerical simulation and road test. The SPL curves obtained by simulation and road test have the same overall tendency, showing the effectiveness of simulation results. The results of simulation indicate that both rear-view mirror and wiper modification schemes have noise reduction effects in full frequency range, in which the maximum reduction amplitude in SPL reaches 5. 6dB(A) and the total SPL with both schemes reduce by 1.5 and 1.8dB(A) respectively. The results of road test show that in high frequency segment with relatively low noise, the SPL after modification has apparent fall, with the maximum reduction amplitude reaching 5.1dB(A) in some high-frequency band. And the total SPL with both modification schemes reduce by 0.2 and 0.7dB(A) respectively, demonstrating the effectiveness of modifications and the feasibility of study method. © 2018, Society of Automotive Engineers of China. All right reserved.
引用
收藏
页码：1475 / 1479and1487
相关论文
共 13 条
  • [1] Raghu L.A.M., Sivapalan S., Robert P., Et al., Computational process for wind noise evaluation of rear-view mirror design in cars
  • [2] Moron P., Powell R., Freed D., Et al., A CFD/SEA approach for prediction of vehicle interior noise due to wind noise
  • [3] Lepley D., Graf A., Senthooran S., Et al., A computational approach to evaluate the vehicle interior noise from greenhouse wind noise sources
  • [4] Ih K.D., Shin S.R., Senthooran S., Et al., Activities of digital wind noise testing process for virtual prototype development, 2009 JSAE Annual Congress: 203-20095476
  • [5] Powell R., Senthooran S., Freed D., Statistical analysis of correlation between simulation and measurement of interior wind noise, (2010)
  • [6] Hartmann M., Ocker J., Lemke T., Et al., Wind noise caused by the A-pillar and the side mirror flow of a generic vehicle model
  • [7] Chen S., Doolen G.D., Lattice Boltzmann method for fluid flows, Annual Review of Fluid Mechanics, 30, 1, (1998)
  • [8] Succi S., The Lattice Boltzmann Equation for Fluid Dynamics and Beyond, Series Numerical Mathematics and Scientific Computation, (2001)
  • [9] Humieres D., Lallemand P., Qian Y.H., Lattice BGK models for Navier-Stokes equations, Euro Physics Letters, 17, 6, pp. 479-484, (1992)
  • [10] Chen H., Orszag S.A., Staroselsky I., Et al., Expanded analogy between Bolzmann kinetic theory of fluids and turbulence, Journal of Fluid Mechanics, 519, 519, pp. 301-314, (2004)
12