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Thermophysics and Aeromechanics

2003 year, number 2

Wing form effect on flow separation

I.D. Zverkov and B.Yu. Zanin
Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, Russia
Pages: 197-204


Results of experimental investigations of a flow around airfoils in the subsonic wind tunnels are presented. The investigation objective is to compare flows above the upper surfaces of a smooth unswept wing and a waved one imitating a wing of a paraplan. Three-dimensionality of the flow structure in the zone of laminar separation bubbles is revealed, and their formation peculiarities on the smooth and waved wings are shown. Normal and tangential components of an aerodynamic force affecting the wing are measured, and the advantages of the paraplan over the planar wing are shown.