630801.fig.005a
(a)  Re = 4
630801.fig.005b
(b) Re =10
630801.fig.005c
(c) Re = 30
630801.fig.005d
(d) Re = 60
630801.fig.005e
(e) Re = 100
Figure 5: Vorticity contours for the flow past a square cylinder for different Reynolds numbers with B = 8: (a) , (b) , (c) , (d) , and (e) Re = 100. lattice size: 800 × 128.