RT Journal Article
T1 Control of sunroof buffeting noise by optimizing the flow field characteristics of a commercial vehicle
A1 Tang, Rongjiang
A1 He, Hongbin
A1 Lu, Zengjun
A1 Xu, Enyong
A1 Xiao, Fei
A1 Núñez Delgado, Avelino
K1 Sunroof buffeting noise
K1 Computational fluid dynamics
K1 Large eddy simulation
K1 Sun visor
K1 Roof dome
K1 Commercial vehicle
AB When a commercial vehicle is driving with the sunroof open, it is easy for the problem of sunroof buffeting noise to occur. This paper establishes the basis for the design of a commercial vehicle model that solves the problem of sunroof buffeting noise, which is based on computational fluid dynamics (CFD) numerical simulation technology. The large eddy simulation (LES) method was used to analyze the characteristics of the buffeting noise with different speed conditions while the sunroof was open. The simulation results showed that the small vortex generated in the cab forehead merges into a large vortex during the backward movement, and the turbulent vortex causes a resonance response in the cab cavity as the turbulent vortex moves above the sunroof and falls into the cab. Improving the flow field characteristics above the cab can reduce the sunroof buffeting noise. Focusing on the buffeting noise of commercial vehicles, it is proposed that the existing accessories, including sun visors and roof domes, are optimized to deal with the problem of sunroof buffeting noise. The sound pressure level of the sunroof buffeting noise was reduced by 6.7 dB after optimization. At the same time, the local pressure drag of the commercial vehicle was reduced, and the wind resistance coefficient was reduced by 1.55% compared to the original commercial vehicle. These results can be considered as relevant, with high potential applicability, within this field of research
PB MDPI
YR 2021
FD 2021
LK http://hdl.handle.net/10347/26698
UL http://hdl.handle.net/10347/26698
LA eng
NO Processes 2021, 9(6), 1052; https://doi.org/10.3390/pr9061052
NO This work was supported by the National Natural Science Foundation of China (No. 52065013), the Guangxi Youth Science Fund Project (2018GXNSFBA281012), the Innovation-Driven Development Special Fund Project of Guangxi (Guike AA19182004), and the Liuzhou Scientific Research and Planning Development Project (2018AA20301)
DS Minerva
RD 23 abr 2026