Lift enhancement of a rectangular wing undergoing a small amplitude plunging motion

D. E. Calderon; Z. Wang; I. Gursul

doi:10.2514/6.2010-386

Lift enhancement of a rectangular wing undergoing a small amplitude plunging motion

Department of Mechanical Engineering

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

24 Citations (SciVal)

Abstract

We present an experimental study on a plunging rectangular wing with semi aspect ratio of 2, at low Reynolds numbers of 1×104- 3×104. Time-averaged force measurements have been presented as a function of non-diniensional frequency, alongside particle image velocimetry (PIV) measurements at the midspan plane. We study the effect of oscillations at low amplitudes and various angles of attack. The presence of multiple peaks in lift have been identified for this three-dimensional wing, thought to be related to the natural shedding frequency of the stationary wing. Wing/vortex and vortex/vortex interactions have been identified which may also contribute to the selection of optimal frequencies. Lift enhancement is observed to become more notable with increasing amplitude, coupled with a slight shift in the peak frequencies, to lower Strouhal numbers, with increasing angle of attack. Despite the highly three-dimensional nature of the flow, lift enhancements up to 180% are possible

Original language	English
Title of host publication	48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
Place of Publication	Reston, U. S. A.
Publisher	American Institute of Aeronautics and Astronautics
DOIs	https://doi.org/10.2514/6.2010-386
Publication status	Published - 2010
Event	48th AIAA Aerospace Sciences Meeting Including The New Horizons Forum and Aerospace Exposition - , USA United States Duration: 4 Jan 2010 → …

Conference

Conference	48th AIAA Aerospace Sciences Meeting Including The New Horizons Forum and Aerospace Exposition
Country/Territory	USA United States
Period	4/01/10 → …

Bibliographical note

Paper no. 2010-0386

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10.2514/6.2010-386

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Lift enhancement of a rectangular wing undergoing a small amplitude plunging motion. / Calderon, D. E.; Wang, Z.; Gursul, I.
48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition. Reston, U. S. A.: American Institute of Aeronautics and Astronautics, 2010.

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

Calderon, DE, Wang, Z & Gursul, I 2010, Lift enhancement of a rectangular wing undergoing a small amplitude plunging motion. in 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition. American Institute of Aeronautics and Astronautics, Reston, U. S. A., 48th AIAA Aerospace Sciences Meeting Including The New Horizons Forum and Aerospace Exposition, USA United States, 4/01/10. https://doi.org/10.2514/6.2010-386

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title = "Lift enhancement of a rectangular wing undergoing a small amplitude plunging motion",

abstract = "We present an experimental study on a plunging rectangular wing with semi aspect ratio of 2, at low Reynolds numbers of 1×104- 3×104. Time-averaged force measurements have been presented as a function of non-diniensional frequency, alongside particle image velocimetry (PIV) measurements at the midspan plane. We study the effect of oscillations at low amplitudes and various angles of attack. The presence of multiple peaks in lift have been identified for this three-dimensional wing, thought to be related to the natural shedding frequency of the stationary wing. Wing/vortex and vortex/vortex interactions have been identified which may also contribute to the selection of optimal frequencies. Lift enhancement is observed to become more notable with increasing amplitude, coupled with a slight shift in the peak frequencies, to lower Strouhal numbers, with increasing angle of attack. Despite the highly three-dimensional nature of the flow, lift enhancements up to 180% are possible",

author = "Calderon, {D. E.} and Z. Wang and I. Gursul",

note = "Paper no. 2010-0386; 48th AIAA Aerospace Sciences Meeting Including The New Horizons Forum and Aerospace Exposition ; Conference date: 04-01-2010",

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AB - We present an experimental study on a plunging rectangular wing with semi aspect ratio of 2, at low Reynolds numbers of 1×104- 3×104. Time-averaged force measurements have been presented as a function of non-diniensional frequency, alongside particle image velocimetry (PIV) measurements at the midspan plane. We study the effect of oscillations at low amplitudes and various angles of attack. The presence of multiple peaks in lift have been identified for this three-dimensional wing, thought to be related to the natural shedding frequency of the stationary wing. Wing/vortex and vortex/vortex interactions have been identified which may also contribute to the selection of optimal frequencies. Lift enhancement is observed to become more notable with increasing amplitude, coupled with a slight shift in the peak frequencies, to lower Strouhal numbers, with increasing angle of attack. Despite the highly three-dimensional nature of the flow, lift enhancements up to 180% are possible

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ER -

Lift enhancement of a rectangular wing undergoing a small amplitude plunging motion

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