630801.fig.0011a
(a) B = 8
630801.fig.0011b
(b) B = 10
630801.fig.0011c
(c) B = 15
630801.fig.0011d
(d) B = 20
630801.fig.0011e
(e) B = 25
Figure 11: Instantaneous vorticity contours for flows past a square cylinder at different blockage ratios: (a) B = 8, (b) B = 10, (c) B = 15, (d) B = 20, and (e) B = 25.