Journal of Fluid Mechanics



Papers

Flow structures behind a heaving and pitching finite-span wing


K. D. VON ELLENRIEDER a1p1, K. PARKER a1 and J. SORIA a1
a1 Laboratory for Turbulence Research in Aerospace & Combustion, Mechanical Engineering, Monash University, Clayton Campus, VIC 3800, Australia

Abstract

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.

(Received October 1 2002)
(Revised May 26 2003)


Correspondence:
p1 Present address: Department of Ocean Engineering, Florida Atlantic University, Dania Beach, FL 33004-3023, USA.


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