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Title: Unsteady aerodynamics of an oscillating fastback model
Authors: Fuller, Joshua
Passmore, Martin A.
Issue Date: 2013
Publisher: © SAE International
Citation: FULLER, J. and PASSMORE, M.A., 2013. Unsteady aerodynamics of an oscillating fastback model. SAE International Journal of Passenger Cars. Mechanical Systems, 6 (1), pp. 403 - 413.
Series/Report no.: SAE Technical Papers;2013-01-1253
Abstract: This paper investigates the surface pressures found on the sides of a Davis model under steady state conditions and during yawed oscillations at a reduced frequency which would generally be assumed to give a quasi-static response. The surface pressures are used to investigate the flow field and integrated to infer aerodynamic loads. The results show hysteresis in the oscillating model's results, most strongly in the A-pillar flows. The changes to the oscillating model's flow field reduces the intensity of the surface pressures around the rear pillars, reduce the strength and extent of the A-pillar vortex and cause the surface pressures to couple with the oscillating motion. This work shows the flows around the front of a vehicle may be more important to a vehicle's unsteady aerodynamics than is generally accepted and also leads to the conclusions that the reduced frequency parameter may not fully describe the onset unsteadiness. © 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: Accepted for publication
DOI: 10.4271/2013-01-1253
URI: https://dspace.lboro.ac.uk/2134/15980
Publisher Link: http://dx.doi.org/10.4271/2013-01-1253
ISSN: 1946-3995
Appears in Collections:Published Articles (Aeronautical and Automotive Engineering)

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