Transport of blood particles: Chaotic advection even in a healthy scenario

Autor(es)

Silva, I. M. ^[1] ; Schelin, A. B. ^[1] ; Viana, R. L. ^[2] ; Caldas, I. L. ^[3]

Afiliação do(s) autor(es)

^[1] Univ Brasilia, Inst Fis, Campus Univ Darcy Ribeiro, BR-70910900 Brasilia, DF - Brazil

^[2] Univ Fed Parana, Dept Fis, BR-81531990 Curitiba, Parana - Brazil

^[3] Univ Sao Paulo, Inst Fis, Rua Matao 1371, BR-05508090 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Chaos; v. 30, n. 9 SEP 2020.
• Citações Web of Science: 0

Resumo

We study the advection of blood particles in the carotid bifurcation, a site that is prone to plaque development. Previously, it has been shown that chaotic advection can take place in blood flows with diseases. Here, we show that even in a healthy scenario, chaotic advection can take place. To understand how the particle dynamics is affected by the emergence and growth of a plaque, we study the carotid bifurcation in three cases: a healthy bifurcation, a bifurcation with a mild stenosis, and the another with a severe stenosis. The result is non-intuitive: there is less chaos for the mild stenosis case even when compared to the healthy, non-stenosed, bifurcation. This happens because the partial obstruction of the mild stenosis generates a symmetry in the flow that does not exist for the healthy condition. For the severe stenosis, there is more irregular motion and more particle trapping as expected. (AU)

• Processo FAPESP: 18/03211-6 - Dinâmica não linear
• Beneficiário: Iberê Luiz Caldas
• Modalidade de apoio: Auxílio à Pesquisa - Temático