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Title: On the optimisation of road vehicle leading edge radius in varying levels of freestream turbulence
Authors: Newnham, Phil
Passmore, M.A.
Baxendale, Anthony
Issue Date: 2006
Publisher: © SAE International
Citation: NEWNHAM, P., PASSMORE, M.A. and BAXENDALE, A., 2006. On the optimisation of road vehicle leading edge radius in varying levels of freestream turbulence. SAE Transactions: Journal of Passenger Cars - Mechanical Systems, 115, 2006, pp. 994-1003.
Series/Report no.: SAE Technical Papers;2006-01-1029
Abstract: It has been recognised that the ideal flow conditions that exist in the modern automotive wind tunnel do not accurately simulate the environment experienced by vehicles on the road. This paper investigates the effect of varying one flow parameter, freestream turbulence, and a single shape parameter, leading edge radius, on aerodynamic drag. The tests were carried out at model scale in the Loughborough University Wind Tunnel, using a very simple 2-box shape, and in the MIRA Full Scale Wind Tunnel using the MIRA squareback Reference Car. Turbulence intensities up to 5% were generated by grids and had a strong effect on transcritical Reynolds number and Reynolds sensitivity at both model scale and full scale. There was a good correlation between the results in both tunnels.
Description: Copyright © 2006 SAE International. This paper is posted on this site with permission from SAE International, and is for viewing only. Further distribution and use of this paper is not permitted without permission from SAE. This paper was part of the 2006 SAE World Congress, Detroit, Michigan, April 3rd-6th 2006.
Version: Published
DOI: 10.4271/2006-01-1029
URI: https://dspace.lboro.ac.uk/2134/6711
Publisher Link: http://dx.doi.org/10.4271/2006-01-1029
ISSN: 0148-7191
Appears in Collections:Published Articles (Aeronautical and Automotive Engineering)

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