Effect of non-Newtonian fluid rheology on an arterial bypass graft: A numerical investigation guided by constructal design

Dutra, Rafael Fernando; Zinani, Flávia Schwarz Franceschini; Rocha, Luíz Alberto Oliveira; Biserni, Cesare

doi:10.1016/j.cmpb.2021.105944

Cited by 12 publications

(1 citation statement)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Dutra et al, [13] utilised the Constructive Design Method with two degrees of freedom: the ratio of bypass to artery diameters and the junction angle at the bypass inlet. The flow problem was numerically solved using the Finite Volume Method, with blood viscosity represented using the Carreau equation.…”

Section: Introductionmentioning

confidence: 99%

Computational Fluid Flow Model for the Development of an Arterial Bypass Graft

Shatnawi

2022

CFDL

View full text Add to dashboard Cite

Intimal hyperplasia, an aberrant proliferation of smooth muscle cells that causes stenosis and graft occlusion, is the primary cause of the failure of grafts after a few years. In this way, and using the constructal design method, this study looks at how the stenosis degree, junction angle, and diameter ratio affect the flow through a bypass graft that goes around an idealised coronary artery partially blocked. The results show that the flow effect by several factors: Stenosis ratio (S), Bypass Attachment Point (L2), Bypass Angle (α), and Bypass Diameter (D1). The results indicate that the pressure drop is reduced when S is low, the optimal attachment point L2 = 4 Artery diameter (D), the optimal angle α = 30°, and the optimal D1 = 1.25D.

show abstract

Section: Introductionmentioning

confidence: 99%