Flow structures behind a heaving and pitching finite-span wing
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)
p1 Present address: Department of Ocean Engineering, Florida Atlantic University, Dania Beach, FL 33004-3023, USA.