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Title: Aerodynamic drag reduction on a simple car-like shape with rear upper body taper
Authors: Howell, Jeff
Passmore, Martin A.
Tuplin, Simon
Issue Date: 2013
Publisher: © SAE International
Citation: 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.
Series/Report no.: SAE Technical Papers;2013-01-0462
Abstract: Various 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.
Description: 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.
Version: Published
DOI: 10.4271/2013-01-0462.
URI: https://dspace.lboro.ac.uk/2134/15989
Publisher Link: http://dx.doi.org/10.4271/2013-01-0462.
ISSN: 1946-3995
Appears in Collections:Published Articles (Aeronautical and Automotive Engineering)

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