2013-01-0462.pdf (5.43 MB)
Aerodynamic drag reduction on a simple car-like shape with rear upper body taper
journal contribution
posted on 2014-10-03, 14:45 authored by Jeff Howell, Martin Passmore, Simon TuplinSimon TuplinVarious techniques to reduce the aerodynamic drag of bluff bodies through the mechanism of base pressure recovery have been investigated. These include, for example, boat-tailing, base cavities and base bleed. In this study a simple body representing a car shape is modified to include tapering of the rear upper body on both roof and sides. The effects of taper angle and taper length on drag and lift characteristics are investigated. It is shown that a significant drag reduction can be obtained with moderate taper angles. An unexpected feature is a drag rise at a particular taper length. Pressure data obtained on the rear surfaces and some wake flow visualisation using PIV are presented. © 2013 SAE International.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Aeronautical and Automotive Engineering
Published in
SAE International Journal of Passenger Cars - Mechanical SystemsVolume
6Issue
1Pages
52 - 60Citation
HOWELL, J., PASSMORE, M.A. and TUPLIN, S., 2013. Aerodynamic drag reduction on a simple car-like shape with rear upper body taper. SAE International Journal of Passenger Cars - Mechanical Systems, 6 (1), pp. 52 - 60.Publisher
© SAE InternationalVersion
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Publication date
2013Notes
Copyright © 2013 SAE International. This paper is posted on this site with permission from SAE International, and is for viewing only. Further use or distribution of this paper is not permitted without permission from SAE.ISSN
1946-3995eISSN
1946-4002Publisher version
Book series
SAE Technical Papers;2013-01-0462Language
- en