Figure 3.
Contour plots of the vorticity and sensitivity vorticity at time t = 80 with the Reynolds numbers Re = 40, 50, 60, 80, 100 and 110. The vorticity plots (top ones) are obtained with the contour option −2.5: 0.2: 2.5. The sensitivity vorticity contour plot are obtained with N = 80 contour lines.
