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Chapitre D'ouvrage Année : 2018

Large-Eddy Simulation of Turbulence in Cardiovascular Flows

Résumé

A 4th-order accurate, low dissipative flow solver is used to perform Large-Eddy Simulations of three typical hemodynamic situations: the flow through the idealized medical device proposed by the American Food and Drug Administration ; the intracardiac flow within an actual human left heart whose morphology and deformations are deduced from medical imaging; the flow downstream of an artificial aortic valve which arises from the blood-leaflets interaction problem. In all the cases, the subgrid scale model designed to handle wall-bounded transitional flows is successfully used and the numerical simulations compare favourably with the experimental data available. These results illustrate the potential of the Large-Eddy Simulation methodology to properly handle blood flows. They also support the idea that turbulence, even if not fully developed, may be present in cardiovascu-lar flows, including under non pathological conditions.
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Dates et versions

hal-01905777 , version 1 (29-10-2018)

Identifiants

Citer

Franck Nicoud, Christophe Chnafa, Julien Sigüenza, Vladeta Zmijanovic, Simon Mendez. Large-Eddy Simulation of Turbulence in Cardiovascular Flows. P. Wriggers; T. Lenarz. Biomedical Technology, 84, Springer Verlag, pp.147-167, 2018, Lecture Notes in Applied and Computational Mechanics, 978-3-319-59547-4. ⟨10.1007/978-3-319-59548-1_9⟩. ⟨hal-01905777⟩
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