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- W950244505 abstract "We model blood flow in arteries as an incompressible Newtonian fluid confined by a poroelastic wall. The blood and the artery are coupled at multiple levels. Fluid forces affect the deformation of the artery. In turn, the mechanical deformation of the wall influences both blood flow and transmural plasma filtration. We analyze these phenomena using a two layer model for the artery, where the inner layers (the endothelium and the intima) behave as a thin membrane modeled as a linearly elastic Koiter shell, while the outer part of the artery (accounting for the media and the adventitia) is described by the Biot model. We assume that the membrane can transduce displacements and stresses to the artery and it is permeable to flow. We develop a numerical scheme based on the finite element method to approximate this problem. Particular attention must be addressed to the discrete enforcement of the interface conditions. Because of poroelasticity, the interaction of the fluid and the structure at the interface is more complicated than in the case of a standard fluid-structure interaction problem. Among different possible strategies to address this task, we consider the weak enforcement of interface conditions based on Nitsche’s type mortaring, which is easily adapted to this particular problem and it guarantees stability. The ultimate objective of this work is to use the available solver to investigate the effect of poroelastic coupling on the behavior of fluid-stucture interaction for large arteries. In particular, we are interested to qualitatively characterize how the presence of intramural flow coupled to the arterial wall deformation affects the displacement field as well as the propagation of pressure waves." @default.
- W950244505 created "2016-06-24" @default.
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- W950244505 date "2015-01-01" @default.
- W950244505 modified "2023-09-27" @default.
- W950244505 title "Effects of Poroelasticity on Fluid-Structure Interaction in Arteries: a Computational Sensitivity Study" @default.
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- W950244505 doi "https://doi.org/10.1007/978-3-319-05230-4_8" @default.
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