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Fig. 7. DPIV results at mid-downstroke (0.25T, the same phase as
Fig. 6B). (A) A typical result
at 0.29r (effective model wing length r=104 mm). The black
thick line denotes wing section and the solid-dot the leading edge. Sectional
streamlines are plot. The pseudocolor contour represents the spanwise
vorticity. (B) Sectional flow fields at different spanwise locations. The
slices were spaced by 15 mm and were all perpendicular to the spanwise
direction. Plot representation as in A.