Effect of Aneurysmal Shape on Atheromatous Hemodynamics during a Pulsatile Blood Flow

Blood circulation in human arteries is primarily influenced by time-related transport processes. A variety of aneurysmal shapes’ geometry also affects the blood flow patterns within them. The current study examines the influence of aneurysmal morphology on atheromatous hemodynamic risk factors by numerically solving blood flow patterns. The software code of COMSOL Multiphysics has been employed in this blood flow simulation. The finite element method has been used. The aneurysmal shape of a rectangle generates an extensive separation zone compared to a trapezium and a triangle. At the aneurysm area, the shearing stress is lower contributes to a thrombus deposition. At the post-aneurysmal area, the velocity is increased. The aneurysmal rectangle gives a lower pressure compared to others. Compared to aneurysmal triangle and aneurysmal rectangle, the TAWSS for aneurysmal trapezium is raised by 7.43% and 34%, respectively. The extensive recirculation zone is found in an aneurysmal rectangle rather than in the aneurysmal trapezium or triangle. Finally, it is concluded that the aneurysmal rectangle deposits more lipids, fats to create more recirculation area.