Abstract
Lattice Boltzmann method (LBM) simulations were performed to capture the long-period dynamics within the wake of a realistic DrivAer fastback model with stationary and rotating wheels. The simulations showed that the wake developed as a low-pressure torus regardless of whether the wheels were rotating. This torus shrank in size on the base in the case of rotating wheels, leading to a reduction in the low-pressure footprint on the base, and consequently a 7% decrease in the total vehicle drag in comparison to the stationary wheels case. Furthermore, the lateral vortex shedding experienced a long-period switching associated with the bi-stability in both the stationary and rotating wheels cases. This bi-stability contributed to low-frequency side force oscillations (<1 >Hz) in alignment with the peak motion-sickness-inducing frequency (0.2 Hz).
Recommended Citation
M. Aultman et al., "Effects Of Wheel Rotation On Long-Period Wake Dynamics Of The DrivAer Fastback Model," Fluids, vol. 7, no. 1, article no. 19, MDPI, Jan 2022.
The definitive version is available at https://doi.org/10.3390/fluids7010019
Department(s)
Mechanical and Aerospace Engineering
Publication Status
Open Access
Keywords and Phrases
Bi-stability; DrivAer; LBM
International Standard Serial Number (ISSN)
2311-5521
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2023 The Authors, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution 4.0 License.
Publication Date
01 Jan 2022
Comments
Ohio State University, Grant None