Flow separation control using vortex generators on an inverted wing in ground effect is experimentally investigated, and its performance is characterized in terms of forces and pressure distributions over a range of incidence and ride height. Counter-rotating and co-rotating rectangular-vane type vortex generators are tested on the suction surface of the wing. The effect of device height and spacing is investigated. The counter-rotating sub-boundary layer vortex generators and counter-rotating large-scale vortex generators on the wing deliver 23% and 10% improvements in the maximum downforce, respectively, compared with the clean wing, at an incidence of one degree, and delay the onset of the downforce reduction phenomenon. The counter-rotating sub-boundary layer vortex generators exhibit up to 26% improvement in downforce and 10% improvement in aerodynamic efficiency at low ride heights. Chordwise pressure measurement confirms that both counter-rotating vortex generator configurations suppress flow separation, while the co-rotating vortex generators exhibit negligible effectiveness. This work shows that a use of vortex generators, notably of the counter-rotating sub-boundary layer vortex generator type, can be effective at controlling flow separation, with a resultant improvement in downforce for relatively low drag penalty.
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December 2009
Research Papers
Flow Separation Control on a Race Car Wing With Vortex Generators in Ground Effect
Yuichi Kuya,
Yuichi Kuya
School of Engineering Sciences,
e-mail: yuichi@soton.ac.uk
University of Southampton
, Southampton SO17 1BJ, UK
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Kenji Takeda,
Kenji Takeda
Senior Lecturer
School of Engineering Sciences,
e-mail: ktakeda@soton.ac.uk
University of Southampton
, Southampton SO17 1BJ, UK
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Xin Zhang,
Xin Zhang
Professor
School of Engineering Sciences,
e-mail: x.zhang1@soton.ac.uk
University of Southampton
, Southampton SO17 1BJ, UK
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Scott Beeton,
Scott Beeton
School of Engineering Sciences,
University of Southampton
, Southampton SO17 1BJ, UK
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Ted Pandaleon
Ted Pandaleon
School of Engineering Sciences,
University of Southampton
, Southampton SO17 1BJ, UK
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Yuichi Kuya
School of Engineering Sciences,
University of Southampton
, Southampton SO17 1BJ, UKe-mail: yuichi@soton.ac.uk
Kenji Takeda
Senior Lecturer
School of Engineering Sciences,
University of Southampton
, Southampton SO17 1BJ, UKe-mail: ktakeda@soton.ac.uk
Xin Zhang
Professor
School of Engineering Sciences,
University of Southampton
, Southampton SO17 1BJ, UKe-mail: x.zhang1@soton.ac.uk
Scott Beeton
School of Engineering Sciences,
University of Southampton
, Southampton SO17 1BJ, UK
Ted Pandaleon
School of Engineering Sciences,
University of Southampton
, Southampton SO17 1BJ, UKJ. Fluids Eng. Dec 2009, 131(12): 121102 (8 pages)
Published Online: November 19, 2009
Article history
Received:
March 20, 2009
Revised:
October 1, 2009
Online:
November 19, 2009
Published:
November 19, 2009
Citation
Kuya, Y., Takeda, K., Zhang, X., Beeton, S., and Pandaleon, T. (November 19, 2009). "Flow Separation Control on a Race Car Wing With Vortex Generators in Ground Effect." ASME. J. Fluids Eng. December 2009; 131(12): 121102. https://doi.org/10.1115/1.4000420
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