Dimples used as sub-boundary layer vortex generators have been shown to reduce wake size at large angles of incidence. The effect these dimples have on wingtip vortices with an endplate is measured via laser Doppler anemometry (LDA) on an inverted Tyrrell026 airfoil (ReC = 0.5 × 105 and chord = 0.075 m) in ground effect in order to determine the flow characteristics for this configuration and to see if previous measurements were performed in a thinner part of the wake due to any potential wake waviness. The strength of the wingtip vortex for the dimpled wing is 10% higher than the “clean” wing immediately downstream. The clean wing has large region of high turbulence throughout the wake, and the dimples reduce this by 50%. The net result is that dimples drastically improve the flow in the wake of the wing and endplate.
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February 2017
Research-Article
The Wingtip Vortex of a Dimpled Wing With an Endplate
Christopher C. Beves,
Christopher C. Beves
School of Mechanical and Manufacturing Engineering,
University of New South Wales (UNSW),
Sydney 2052,
Australia;
CD-Adapco,
200 Shepherds Bush Road,
London W6 7NL, UK
e-mail: cbeves@gmail.com
University of New South Wales (UNSW),
Sydney 2052,
Australia;
CD-Adapco,
200 Shepherds Bush Road,
London W6 7NL, UK
e-mail: cbeves@gmail.com
Search for other works by this author on:
Tracie J. Barber
Tracie J. Barber
School of Mechanical and Manufacturing Engineering,
University of New South Wales (UNSW),
Sydney 2052, Australia
e-mail: t.barber@unsw.edu.au
University of New South Wales (UNSW),
Sydney 2052, Australia
e-mail: t.barber@unsw.edu.au
Search for other works by this author on:
Christopher C. Beves
School of Mechanical and Manufacturing Engineering,
University of New South Wales (UNSW),
Sydney 2052,
Australia;
CD-Adapco,
200 Shepherds Bush Road,
London W6 7NL, UK
e-mail: cbeves@gmail.com
University of New South Wales (UNSW),
Sydney 2052,
Australia;
CD-Adapco,
200 Shepherds Bush Road,
London W6 7NL, UK
e-mail: cbeves@gmail.com
Tracie J. Barber
School of Mechanical and Manufacturing Engineering,
University of New South Wales (UNSW),
Sydney 2052, Australia
e-mail: t.barber@unsw.edu.au
University of New South Wales (UNSW),
Sydney 2052, Australia
e-mail: t.barber@unsw.edu.au
Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received December 31, 2015; final manuscript received August 18, 2016; published online November 3, 2016. Editor: Malcolm J. Andrews.
J. Fluids Eng. Feb 2017, 139(2): 021202 (9 pages)
Published Online: November 3, 2016
Article history
Received:
December 31, 2015
Revised:
August 18, 2016
Citation
Beves, C. C., and Barber, T. J. (November 3, 2016). "The Wingtip Vortex of a Dimpled Wing With an Endplate." ASME. J. Fluids Eng. February 2017; 139(2): 021202. https://doi.org/10.1115/1.4034525
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