Interactions between Underbody Aerodynamics and Aeroacoustics

Kounenis, C.D.; Sims-Williams, D.B.; Dominy, R.G.; Berson, A.; Oettle, N.R.

Abstract

Research has shown that lack of ground effect simulation in the wind tunnel could result in different flow conditions from those experienced by the vehicle on the road, influencing aerodynamic noise inside the cabin. The focus of this work is the influence of moving ground and rotating wheels on both aeroacoustic and aerodynamic measures for a typical European luxury saloon. The acoustic influence due to moving ground and rotating wheels including both flow effects and the background noise contribution of the associated equipment is investigated. Results demonstrate a significant underbody influence in cabin noise up to 5 dBA and confirm the feasibility of using a moving ground plane for aeroacoustic measurements, in contrast to moving ground and rotating wheels which can mask acoustic changes.

Citation

Kounenis, C., Sims-Williams, D., Dominy, R., Berson, A., & Oettle, N. (2014). Interactions between Underbody Aerodynamics and Aeroacoustics. In International vehicle aerodynamics conference : Holywell Park, Loughborough, UK 14-15 October 2014 (263-273)

• Conference Name: International Vehicle Aerodynamics Conference
• Conference Location: Loughborough, UK
• Publication Date: Oct 23, 2014
• Deposit Date: Dec 31, 2014
• Pages: 263-273
• Book Title: International vehicle aerodynamics conference : Holywell Park, Loughborough, UK 14-15 October 2014.
• ISBN: 9780081001998
• Publisher URL: http://store.elsevier.com/The-International-Vehicle-Aerodynamics-Conference/isbn-9780081001998/