Fig. 6

Velocity pathlines (left), velocity contours with in-plane velocity vectors at selected cross sections (center), and isosurfaces of local normalized helicity (right) for cases with 80 % side branch stenosis, flow split of 65 %:35 %, and distal angle of 40° (a) and 70° (b). Positive and negative values of local normalized helicity indicate counter-rotating flow structures