Figure 6: Strategy followed to create high-quality mesh of the Y-junction: (1) generation of two biplanar meshes; (2) generation of two circular meshes infinitesimally small located in the centroid of the valvular planes; (3) translation of the circular mesh up to the desired position; generation of intermediate Polylines infinitesimally small (in red) as linear interpolation between a concentric scaled down biplanar meshes and the translated circular meshes; (4) the intermediate small Polylines are concentrically scaled up (in green); (5) the Polylines of the bifurcation are created as linear intersection between the small and big versions of the Polylines which lie on the target surface; (6) the coordinates of the Polylines are used as final CPs for the isoparametric transformations.