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Influence of non-Newtonian blood flow models on drug deposition in the arterial wall

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Autor(es):
Gudino, Elias [1] ; Oishi, Cassio M. [2] ; Sequeira, Adelia [3, 4]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Fed Parana, Dept Math, Curitiba, Parana - Brazil
[2] Univ Estadual Paulista Unesp, Dept Math & Comp Sci, Fac Ciencias & Tecnol, Pres Prudente - Brazil
[3] Univ Lisbon, Dept Math, Inst Super Tecn, Lisbon - Portugal
[4] Univ Lisbon, CEMAT IST, Inst Super Tecn, Lisbon - Portugal
Número total de Afiliações: 4
Tipo de documento: Artigo Científico
Fonte: Journal of Non-Newtonian Fluid Mechanics; v. 274, DEC 2019.
Citações Web of Science: 0
Resumo

In this paper, we investigate the influence of non-Newtonian blood flow models on drug diffusion from a coronary drug-eluting-stent (DES). We consider the Oldroyd-B, Phan-Thien-Tanner (PTT) and Giesekus viscoelastic models for the description of fluid dynamics of blood. The model for blood flow is coupled with plasma filtration and mass transport from a DES. The model for the transport problem takes into consideration non-Fickian diffusion, drug dissolution, polymer degradation and binding. We propose an Implicit-Explicit (IMEX) finite element method and show numerical experiments that confirm the effectiveness and order of convergence of the employed method. ology. The numerical results indicate that an increase in the elastic properties of the blood leads to an increase of the concentration of free drug in the arterial wall. Finally, we present unsteady simulations comparing the Newtonian and non-Newtonian blood flow models. (AU)

Processo FAPESP: 13/07375-0 - CeMEAI - Centro de Ciências Matemáticas Aplicadas à Indústria
Beneficiário:José Alberto Cuminato
Linha de fomento: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs