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Aerodynamic drag reduction on a simple car-like shape with rear upper body taper

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posted on 03.10.2014, 14:45 by Jeff Howell, Martin Passmore, Simon Tuplin
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.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

SAE International Journal of Passenger Cars - Mechanical Systems

Volume

6

Issue

1

Pages

52 - 60

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.

Publisher

© SAE International

Version

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

2013

Notes

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

1946-3995

eISSN

1946-4002

Book series

SAE Technical Papers;2013-01-0462

Language

en

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Keywords

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