NDLI: Study on the Fluctuating Pressure and Aerodynamic Noise at Car Rearview Mirror Zone

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Study on the Fluctuating Pressure and Aerodynamic Noise at Car Rearview Mirror Zone

Content Provider	Semantic Scholar
Author	Zhang, Zhong-Hua Xu, Yan-Hai Ju, Dao-Jie Qiao, Xu-Qiang Wang, Shawn Xianfu
Copyright Year	2017
Abstract	Abstract: In order to study on the flow characteristics and the formation of aerodynamic noise quantitatively at car rearview mirror zone, the numerical simulation method is applied in the paper. Firstly, a wind tunnel computational model that includes review mirror, body characteristics and detailed wheel structures based on an actual car is established. The effects of rotating wheels and moving ground on air flow are also taken into account in the model. Then, a large eddy simulation (LES) technology and transient numerical method are used to solve the computational domain and study the flow field characteristics and pulsating pressure at mirror and side window zone. Finally, the FW-H method is applied to calculate the aerodynamic noise at rearview mirror zone. The results show that a strong swirling motion in the wake of the A-pillar and rearview mirror is the reason caused fluctuating pressure that is the main dipole sound sources at side window zone. Additionally, it also shows that reducing flow separation movement at rearview mirror zone will ameliorate the drag eddy scale in the wake area which is the key to control aerodynamic noise source at side window zone.
File Format	PDF HTM / HTML
DOI	10.1515/9783110584998-051
Alternate Webpage(s)	https://www.degruyter.com/downloadpdf/books/9783110584998/9783110584998-051/9783110584998-051.pdf
Alternate Webpage(s)	https://doi.org/10.1515/9783110584998-051
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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