Comparison of arterial wall models in fluid–structure interaction simulations

Abstract Monolithic fluid–structure interaction (FSI) of blood flow with arterial walls is considered, making use sophisticated nonlinear wall models. These incorporate the effects almost incompressibility as well anisotropy caused by embedded collagen fibers. In literature, relatively simple structural models such Neo-Hooke are often considered for FSI walls. Such lack, both, and incompressibility. this paper, numerical simulations idealized heart beats in a curved benchmark geometry, using models, compared: we consider three different incompressible, anisotropic reference and, comparison, simple, isotropic model four parameter sets. The show significant quantitative qualitative differences stresses displacements lumen cross sections. For significantly larger amplitude in- outflow areas during beat observed, presumably due to lack fiber stiffening. completeness, also linear elastic 16 However, our setup, were not successful achieving good agreement calculation.