Figure 5

Instantaneous vorticity scalar fields at different time points (t = 0. 42 0. 5 and 0. 6 s) showing isolevel contours plot (50 to 300 step = 10 unit = 1/ s) for different cannula placements. The vorticity scalar magnitude is shown, with direction perpendicular to the plane of the figures. (a) near the apex, at t = 0.42s; (b) near the apex, at t=0.5s; (c) near the apex, at t=0.6s; (d) one forth LV, at t = 0.42s; (e) one forth LV, at t=0.5s; (f) one forth LV, at t=0.6s; (g) half LV, at t = 0.42s; (h) half LV, at t=0.5s; (i) half LV, at t=0.6s.