Space-time finite element computation of arterial fluid-structure interactions with patient-specific data

作者：Takizawa Kenji; Christopher Jason; Tezduyar Tayfun E^*; Sathe Sunil

来源：International Journal for Numerical Methods in Biomedical Engineering, 2010, 26(1): 101-116.

DOI：10.1002/cnm.1241

• cardiovascular fluid mechanics
• cerebral aneurysms
• patient-specific data
• fluid-structure interactions
• hyperelastic material
• space-time methods

The stabilized space time fluid structure interaction (SSTFSI) technique developed by the team for advanced flow simulation and modeling is applied to the computation of arterial fluid structure interaction (FSI) with patient-specific data. The SSTFSI technique is based on the deforming-spatial-domain/stabilized space time formulation and is supplemented with a number of special techniques developed for arterial FSI. These include a recipe for pre-FSI computations that improve the convergence of the FSI computations, using an estimated zero-pressure arterial geometry, layers of refined fluid mechanics mesh near the arterial walls, and a special mapping technique for specifying the velocity profile at an inflow boundary with non-circular shape. In the test computations reported here, we focus on a patient-specific middle cerebral artery segment with aneurysm, where the arterial geometry is based on computed tomography images.

• 出版日期2010-1