抄録
This paper experimentally investigates the use of vortex generators for separation control on an inverted wing in ground effect using off-surface flow measurements and surface flow visualization.A typical racing car wing geometry is tested in a rolling road wind tunnel over a wide range of incidences and ride heights.Rectangular vane type of sub-boundary layer and large-scale vortex generators are attached to the suction surface, comprising counter-rotating and corotating configurations.The effects of both device height and spacing are examined.The counter-rotating sub-boundary layer vortex generators and counter-rotating large-scale vortex generators suppress the flow separation at the center of each device pair, while the counter-rotating large-scale vortex generators induce horseshoe vortices between each device where the flow is separated.The corotating sub-boundary layer vortex generators tested here show little evidence of separation control.Increasing the spacing of the counter-rotating sublayer vortex generator induces significant horseshoe vortices, comparable to those seen in the counter-rotating largescale vortex generator case.Wake surveys show significant spanwise variance behind the wing equipped with the counter-rotating large-scale vortex generators, while the counterrotating sub-boundary layer vortex generator configuration shows a relatively small variance in the spanwise direction.The flow characteristics revealed here suggest that counter-rotating sub-boundary layer vortex generators can provide effective separation control for race car wings in ground effect.
本文言語 | English |
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ページ(範囲) | 1211031-1211039 |
ページ数 | 9 |
ジャーナル | Journal of Fluids Engineering, Transactions of the ASME |
巻 | 131 |
号 | 12 |
DOI | |
出版ステータス | Published - 2009 12月 |
外部発表 | はい |
ASJC Scopus subject areas
- 機械工学