Research on aerodynamic characteristics of vehicle platoon under crosswind conditions based on Ahmed body
International Journal of Numerical Methods for Heat & Fluid Flow
ISSN: 0961-5539
Article publication date: 11 December 2023
Abstract
Purpose
The purpose of this paper is to study the aerodynamic characteristics of Ahmed body in longitudinal and lateral platoons under crosswind by computational fluid dynamics simulation. It helps to improve the aerodynamic characteristics of vehicles by providing theoretical basis and engineering direction for the development and progress of intelligent transportation.
Design/methodology/approach
A two-car platoon model is used to compare with the experiment to prove the accuracy of the simulation method. The simplified Ahmed body model and the Reynolds Averaged N-S equation method are used to study the aerodynamic characteristics of vehicles at different distances under cross-winds.
Findings
When the longitudinal distance x/L = 0.25, the drag coefficients of the middle and trailing cars at β = 30° are improved by about 272% and 160% compared with β = 10°. The side force coefficients of the middle and trailing cars are increased by 50% and 62%. When the lateral distance y/W = 0.25, the side force coefficients of left and middle cars at β = 30° are reduced by 38% and 37.5% compared with β = 10°. However, the side force coefficient of the right car are increased by about 84.3%.
Originality/value
Most of the researches focus on the overtaking process, and there are few researches on the neat lateral platoon. The innovation of this paper is that in addition to studying the aerodynamic characteristics of longitudinal driving, the aerodynamic characteristics of neat lateral driving are also studied, and crosswind conditions are added. The authors hope to contribute to the development of intelligent transportation.
Keywords
Acknowledgements
Funding: Guangxi Postgraduate Education Innovation Project; GKYC202314; National Natural Science Foundation of China; 22262005; Guangxi University of Science and Technology Doctoral Fund; 13Z10.
Since submission of this article, the following author has updated their affiliations: Chunmei Jiang is at the Institute of the New Energy and Energy-saving and Emission-reduction, Guangxi University of Science and Technology, Liuzhou, China.
Citation
Luo, J., Li, M., Mi, K., Liang, Z., Chen, X., Ye, L., Tie, Y., Xu, S., Zhang, H., Chen, G. and Jiang, C. (2023), "Research on aerodynamic characteristics of vehicle platoon under crosswind conditions based on Ahmed body", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. ahead-of-print No. ahead-of-print. https://doi.org/10.1108/HFF-09-2023-0558
Publisher
:Emerald Publishing Limited
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