Evaluation of simplified automobile wind noise model based on main propagation path of sound and vibration

Wang Yigang; Jiao Yan; Zhang Jie

doi:10.11729/syltlx20190106

Volume 33 Issue 6

Dec. 2019

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Wang Yigang, Jiao Yan, Zhang Jie. Evaluation of simplified automobile wind noise model based on main propagation path of sound and vibration[J]. Journal of Experiments in Fluid Mechanics, 2019, 33(6): 90-94. doi: 10.11729/syltlx20190106

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Evaluation of simplified automobile wind noise model based on main propagation path of sound and vibration

doi: 10.11729/syltlx20190106

Wang Yigang^{1, 2
,
,},
Jiao Yan²,
Zhang Jie²

1.
Shanghai Key Lab of Vehicle Aerodynamics and Vehicle Thermal Management Systems, Shanghai 201804, China
2.
Shanghai Automotive Wind Tunnel Center, Tongji University, Shanghai 201804, China

Received Date: 2019-08-21
Rev Recd Date: 2019-09-19
Publish Date: 2019-12-25

Abstract

Abstract

A Statistical Energy Analysis (SEA) model was established for a real vehicle. The main propagation paths were classified by the analysis of propagation characteristics, and the simplified model approximation analysis was performed. By choosing the main and secondary systems in the SEA model, two simplified models are established, and the calculation of their interior noise and propagation path shows that the characteristics of the model subsystem change, the energy propagation path and size characteristics change, and even the subsystem's ability to accept the external fluid pulsation and sound field changes, resulting in the change of the calculated interior noise. The use of the simplified model requires further study.
- automobile,
- aerodynamic noise(wind noise),
- statistical energy analysis,
- main propagation paths,
- sound pressure level

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References(7)

References

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