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Figure 2


Fig. 2. DSPIV setup. (A) The DSPIV experimental arrangement (top view). CCD1 and CCD2 are the CCD cameras. The broken-line section of the laser-sheet represents the shadow behind the opaque model wing. The blue broken lines a, b and c around the origin o are the initial positions of 0.125T, 0.25T and 0.375T, respectively. At the instant of measurement, the wing-fixed frame oxyz coincided with the inertial frame oXYZ. The thick gray double-headed arrow denotes the positioning translation of the model system. (B) The typical raw 3D3C velocity field (at 0.25T) before spanwise interpolation. The blue region is the model wing.