Flow control for a car-mounted rear wing

•Wind tunnel and CFD data of an active aerodynamic device for a sports car.•Flow control around a rear wing with the use of a small plate.•A significant change of downforce with the use of a small aerodynamic element. In this paper, experimental and numerical results are presented on an active car w...

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Bibliographic Details
Published in:International journal of mechanical sciences 2019-03, Vol.152, p.384-399
Main Authors: Kurec, Krzysztof, Remer, Michał, Mayer, Tobiasz, Tudruj, Sylwester, Piechna, Janusz
Format: Article
Language:English
Subjects:
Active aerodynamics
Aerodynamic loads
Automobile aerodynamics
CFD
Rear wing
Wind tunnel tests
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Summary:•Wind tunnel and CFD data of an active aerodynamic device for a sports car.•Flow control around a rear wing with the use of a small plate.•A significant change of downforce with the use of a small aerodynamic element. In this paper, experimental and numerical results are presented on an active car wing with a moving spoiler placed beneath it. It was shown that movement of a small element, i.e., the spoiler, can result in a significant change of downforce generated by the car body, equivalent to changing the rear wing's angle of attack by several degrees. A 1:2.5 scale car model, equipped with several moving surfaces, was tested in a wind tunnel to establish the aerodynamic coefficients. During wind tunnel tests, all force components were measured for various wing and spoiler configurations. Visualization techniques such as oil and mini-tufts were used. Numerical simulations of wind tunnel configurations were validated with the use of wind tunnel test data. Different turbulence models were considered and a good accuracy with the wind tunnel results was achieved. [Display omitted]
ISSN:0020-7403
1879-2162
DOI:10.1016/j.ijmecsci.2018.12.034