752931.fig.007a
(a)
752931.fig.007b
(b)
752931.fig.007c
(c)
752931.fig.007d
(d)
752931.fig.007e
(e)
752931.fig.007f
(f)
Figure 7: Relative velocities at half pitch along the spanwise direction: (a) , (b) , (c) , (d) , (e) , and (f) .