Boundary conditions for flow simulations of abdominal aortic aneurysms

Good agreement was found between rigid wall flow simulations on the “systolic” geometry and the fluid-structure interaction simulations. Other authors found much larger differences because earlier the “diastolic” geometry had been used for comparisons and the stresses in the diastolic state were neglected. It was concluded that the spine support does not have a great impact on the flow field. Significant differences were found between the flow behaviour of artificially generated and real aneurysm geometries.