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Title: On the impact of fluid structure interaction in blood flow simulations
Author(s): Failer, Lukas
Minakowski, Piotr
Richter, Thomas
Issue Date: 2021
Type: Article
Language: English
URN: urn:nbn:de:gbv:ma9:1-1981185920-835287
Subjects: Fluid structure interaction
Blood flow
Finite elements
Abstract: We study the impact of using fluid-structure interactions (FSI) to simulate blood flow in a stenosed artery. We compare typical flow configurations using Navier–Stokes in a rigid geometry setting to a fully coupled FSI model. The relevance of vascular elasticity is investigated with respect to several questions of clinical importance. Namely, we study the effect of using FSI on the wall shear stress distribution, on the Fractional Flow Reserve and on the damping effect of a stenosis on the pressure amplitude during the pulsatile cycle. The coupled problem is described in a monolithic variational formulation based on Arbitrary Lagrangian Eulerian (ALE) coordinates. For comparison, we perform pure Navier–Stokes simulations on a pre-stressed geometry to give a good matching of both configurations. A series of numerical simulations that cover important hemodynamical factors are presented and discussed.
Open Access: Open access publication
License: (CC BY 4.0) Creative Commons Attribution 4.0(CC BY 4.0) Creative Commons Attribution 4.0
Sponsor/Funder: Projekt DEAL 2020
Journal Title: Vietnam journal of mathematics
Publisher: Springer
Publisher Place: Singapore
Volume: 49
Issue: 1
Original Publication: 10.1007/s10013-020-00456-6
Page Start: 169
Page End: 187
Appears in Collections:Fakultät für Mathematik (OA)

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