CHAHOUR, Keltoum; ABOULAICH, Rajae; HABBAL, Abderrahmane; ABDELKHIRANE, Cherif; ZEMZEMI, Nejib

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CHAHOUR, Keltoum
Analysis and Control of Unsteady Models for Engineering Sciences [ACUMES]
Laboratoire d'Etudes et Recherche en Mathématiques Appliquées [LERMA]

ABOULAICH, Rajae
Laboratoire d'Etudes et Recherche en Mathématiques Appliquées [LERMA]

HABBAL, Abderrahmane
Analysis and Control of Unsteady Models for Engineering Sciences [ACUMES]
Laboratoire Jean Alexandre Dieudonné [LJAD]

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Mathematical Modelling of Natural Phenomena. 2018

EDP Sciences

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2018

Résumé en anglais

The fractional ow reserve (FFR) provides an efficient quantitative assessment of the severity of a coronary lesion. Our aim is to address the problem of computing non-invasive virtual fractional ow reserve (VFFR). In this paper, we present a preliminary study of the main features of ow over a stenosed coronary arterial portion, in order to enumerate the different factors affecting the VFFR. We adopt a non-Newtonian ow model and we assume that the two-dimensional (2D) domain is rigid in a first place. In a second place, we consider a simplified weakly coupled FSI model in order to take into account the infinitesimal displacements of the upper wall. A 2D finite element solver was implemented using Freefem++. We computed the VFFR profiles with respect to different lesion parameters and compared the results given by the rigid wall model to those obtained for the elastic wall one.< Réduire

Mots clés en anglais

Atherosclerosis

Fractional flow reserve

Generalized flow model

Fluid-structure interaction

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Numerical simulation of the fractional flow reserve (FFR)

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Résumé en anglais

Mots clés en anglais

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