Computational fluid dynamics of stented coronary bifurcations studied with a hybrid discretization method

摘要: Abstract Nowadays the provisional side branch (PSB) approach is preferred coronary bifurcation stenting technique. It usually concluded by final kissing balloon (FKB) procedure which consists in simultaneous expansion of two balloons both branches. Several kinds accesses to (SB) can be used perform FKB resulting different geometrical configurations artery and implanted stent and, consequently, altered hemodynamic scenarios. Computational fluid dynamic investigations have been frequently study influence implantation on blood flow. However, due complexity geometry stented arteries, high computational cost required for this kind simulation has strongly limited their use clinical industrial field. Hence, present firstly focuses development an efficient volume meshing method, led us obtain accurate results three-dimensional complex geometries shortest time compatible with resources available. A hybrid strategy was chosen, using tetrahedral hexahedral elements. Then, discretization method applied a quantitatively examine scenarios provoked inflation performed proximal or distal access SB. Transient simulations were analyse near-wall variables like wall shear stresses acting arterial bulk flow quantities such as velocity magnitude helicity fields. The prove that percentage area characterised stress smaller than 0.5 Pa lower case (84.7 % versus 88.0 %). contour maps resulted better type access, too. In conclusion, provided valid tool support experience suggests instead one during PSB approach.