Flow Behaviour and Wall Shear Stress Derivatives in Abdominal Aortic Aneurysm Models: A Detailed CFD Analysis into Asymmetry Effect

Assessing the risk of rupture is extremely important to reduce mortality abdominal aortic aneurysm (AAA). Current clinical guidelines suggest considering maximum diameter as a criterion for planning and surgical intervention; however, this approach too simplistic overlooks other morphological parameters that are associated with rupture. The aim paper study thrombogenicity predict AAA by taking into consideration geometrical asymmetry aneurysm, studying its effect on blood flow behaviour vortical structure, spatiotemporal distribution wall shear stresses (WSS), their related parameters. To show dynamics hemodynamic forces, five virtual models were constructed using values ratio ? ranging from ?=0.2 (asymmetric model; AM) ?=1 (symmetric SM). Simulations run each geometry under transient physiological conditions finite volume discretization. Resting rate was investigated in these our results demonstrate has clear behaviour, consequently WSS distribution, oscillatory index (OSI) time averaged stress (TAWSS). Furthermore, preliminary findings thrombus formation more probable an asymmetric aneurysm.