The effect of trailing-edge flap (TEF) deflection on the aerodynamic properties and flowfield of a symmetric airfoil over a wavy ground was investigated experimentally. This Technical Brief is a continuation of Lee and Tremblay-Dionne (2018, “Experimental Investigation of the Aerodynamics and Flowfield of a NACA 0015 Airfoil Over a Wavy Ground,” ASME J. Fluids Eng., 140(7), p. 071202) in which an unflapped airfoil was employed. Regardless of the flap deflection, the cyclic variation in the sectional lift Cl and pitching moment Cm coefficients over the wavy ground always persists. The Cm also has an opposite trend to Cl. The flap deflection, however, produces an increased maximum and minimum Cl and Cm with a reduced fluctuation compared to their unflapped counterparts. The Cd increase outperforms the Cl increase, leading to a lowered Cl/Cd of the flapped airfoil.
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June 2019
Technical Briefs
Effect of Trailing-Edge Flap Deflection on a Symmetric Airfoil Over a Wavy Ground
V. Tremblay-Dionne,
V. Tremblay-Dionne
Department of Mechanical Engineering,
McGill University,
Montreal, QC H3A 2K6, Canada
McGill University,
Montreal, QC H3A 2K6, Canada
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T. Lee
T. Lee
Department of Mechanical Engineering,
McGill University,
Montreal, QC H3A 2K6, Canada
McGill University,
Montreal, QC H3A 2K6, Canada
Search for other works by this author on:
V. Tremblay-Dionne
Department of Mechanical Engineering,
McGill University,
Montreal, QC H3A 2K6, Canada
McGill University,
Montreal, QC H3A 2K6, Canada
T. Lee
Department of Mechanical Engineering,
McGill University,
Montreal, QC H3A 2K6, Canada
McGill University,
Montreal, QC H3A 2K6, Canada
1Corresponding author.
Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received July 28, 2018; final manuscript received October 8, 2018; published online December 12, 2018. Assoc. Editor: Moran Wang.
J. Fluids Eng. Jun 2019, 141(6): 064501 (4 pages)
Published Online: December 12, 2018
Article history
Received:
July 28, 2018
Revised:
October 8, 2018
Citation
Tremblay-Dionne, V., and Lee, T. (December 12, 2018). "Effect of Trailing-Edge Flap Deflection on a Symmetric Airfoil Over a Wavy Ground." ASME. J. Fluids Eng. June 2019; 141(6): 064501. https://doi.org/10.1115/1.4041736
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