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Flow structures behind a heaving and pitching finite-span wing

Published online by Cambridge University Press:  19 August 2003

K. D. VON ELLENRIEDER ,
K. PARKER  and
J. SORIA
K. D. VON ELLENRIEDER
Affiliation:
Laboratory for Turbulence Research in Aerospace & Combustion, Mechanical Engineering, Monash University, Clayton Campus, VIC 3800, Australia Present address: Department of Ocean Engineering, Florida Atlantic University, Dania Beach, FL 33004-3023, USA.
K. PARKER
Affiliation:
Laboratory for Turbulence Research in Aerospace & Combustion, Mechanical Engineering, Monash University, Clayton Campus, VIC 3800, Australia
J. SORIA
Affiliation:
Laboratory for Turbulence Research in Aerospace & Combustion, Mechanical Engineering, Monash University, Clayton Campus, VIC 3800, Australia
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Abstract

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The three-dimensional structure of the flow behind a heaving and pitching finite-span wing is investigated using dye flow visualization at a Reynolds number of 164. Phase-locked image sequences, which are obtained from two orthogonal views, are combined to create a set of composite images that give an overall sense of the three-dimensional structure of the flow. A model of the vortex system behind the wing is constructed from the image sequences. Variations of the Strouhal number, pitch amplitude and heave/pitch phase angle are qualitatively shown to affect the structure of the wake.

Type
Papers
Information
Journal of Fluid Mechanics , Volume 490 , 10 September 2003 , pp. 129 - 138
Copyright
© 2003 Cambridge University Press