Numerical investigation of abdominal aortic aneurysm hemodynamics using the reduced unified continuum formulation for vascular fluid-structure interaction

We recently demonstrated the reduction of unified continuum and variational multiscale formulation to a computationally efficient fluid-structure interaction (FSI) via three modeling assumptions pertaining vascular wall. Similar coupled momentum method introduced by Figueroa et al., resulting semi-discrete yields monolithically FSI system posed in an Eulerian frame reference with only minor modification fluid boundary integral. To achieve uniform second-order temporal accuracy user-controlled high-frequency algorithmic damping, we adopt generalized-α for discretization entire system. In conjunction fully consistent, segregated predictor multi-corrector algorithm preserving block structure incompressible Navier-Stokes equations implicit solver’s associated linear system, three-level nested preconditioner is adopted improved representation Schur complement. this work, apply our reduced appropriately prestressed patient-specific abdominal aortic aneurysm investigate effects varying spatial distributions wall properties on hemodynamic quantities interest.