Effect of Wheel Rotational Speed on the Drag of a Sport Utility Vehicle Coupé and the Aerodynamic Evaluation of Wheelsets

2022-01-5041

05/30/2022

Features
Event
Automotive Technical Papers
Authors Abstract
Content
Wind tunnel measurements carried out as part of the development of the Porsche Cayenne Coupé showed a significant decrease in the drag coefficient with increasing wind or simulation speed for certain vehicle configurations. The influence of wheel rotation was identified as the cause. Systematic investigations were then conducted with different wheelsets at wind speeds of up to 300 km/h. The results show that primarily the rotation of the rear wheels is responsible for the decrease of the drag coefficient with increasing speed. The comparison of the individual wheelsets with each other shows that different rim-tire combinations lead to different drag gradients. The consequences of this for the aerodynamic evaluation of wheel-tire combinations are shown and discussed.
Meta TagsDetails
DOI
https://doi.org/10.4271/2022-01-5041
Pages
10
Citation
Wolf, T., "Effect of Wheel Rotational Speed on the Drag of a Sport Utility Vehicle Coupé and the Aerodynamic Evaluation of Wheelsets," SAE Technical Paper 2022-01-5041, 2022, https://doi.org/10.4271/2022-01-5041.
Additional Details
Publisher
Published
May 30, 2022
Product Code
2022-01-5041
Content Type
Technical Paper
Language
English