Pulsatile Bypass Flow by Means of Power Law and Newtonian Model: A Comparison Guided by Numerical Investigation

被引：0

作者：

Impiombato A.N. ^{[1
]}

Orlandi F. ^{[1
]}

Civita G.L. ^{[1
]}

Zinani F.S.F. ^{[2
]}

Rocha L.A.O. ^{[3
]}

Biserni C. ^{[1
]}

Di Schio E.R. ^{[1
]}

机构：

[1] Department of Industrial Engineering, Alma Mater Studiorum, University of Bologna, Viale Risorgimento 2, Bologna

[2] Mechanical Engineering Graduate Program, Universidade do Vale do Rio dos Sinos – UNISINOS, Av. Unisinos, 950, RS, São Leopoldo

[3] Department of Mechanical Engineering, Federal University of Rio Grande do Sul – UFRGS, Sarmento Leite Street, 425, RS, Porto Alegre

来源：

Defect and Diffusion Forum | 2022年 / 420卷

关键词：

Constructal Design; Coronary artery bypass; Newtonian model; Power law model; Pulsatile flow;

D O I：

10.4028/p-1hzt14

中图分类号：

学科分类号：

摘要：

In this work, the comparison between the Newtonian and the Power Law models was pointed out to determine the flow field within a system that includes the bypass of a narrowing zone (Stenosis) of an ideal artery. The simulations were conducted in a transient regime considering the pulsed effect inside the veins. The results show that the Power Law model does not sufficiently coincide with the Newtonian model, especially for describing the wall stresses. More specifically, the Power Law model predicts a velocity profile that remains parabolic for the entire time range analyzed, while the Newtonian model captures vorticities. © 2022 Trans Tech Publications Ltd, Switzerland.

引用

页码：215 / 228

页数：13

共 14 条

[1]

Ismail Z., Abdullah I., Mustapha N., Amin N., A power-law model of blood flow through a tapered overlapping stenosed artery, Applied Math. Comp, 195, pp. 669-680, (2008)

[2]

Moayeri M., Zendehbudi G., Effects of elastic property of the wall on flow characteristics through arterial stenoses, Journal Biomech, 36, pp. 525-535, (2003)

[3]

Chakravarty S., Effects of stenosis on the flow-behaviour of blood in an artery, Int. J. Eng. Science, 25, pp. 1003-1016, (1987)

[4]

Chakravarty S., Datta A., Mandal P., Analysis of nonlinear blood flow in a stenosed flexible artery, Int. J. Eng. Science, 33, pp. 1821-1837, (1995)

[5]

Chakravarty S., Datta A., Mandal P., Effect of body acceleration on unsteady flow of blood past a time-dependent arterial stenosis, Math. Comp. Modelling, 24, pp. 57-74, (1996)

[6]

Dutra R. F., Zinani F. S., Rocha L. A. O., Biserni C., Constructal design of an arterial bypass graft, Heat Transfer, 49, pp. 4019-4039, (2020)

[7]

Rocha L. A.O., Lorente S., Bejan A., Constructal theory in heat transfer, Handbook of Thermal Science and Engineering, (2018)

[8]

Bertolotti C., Deplano V., Three-dimensional numerical simulations of flow through a stenosed coronary bypass, Journal Biomech, 8, pp. 1011-1022, (2000)

[9]

Vimmr J., Jonasova A., Bublik O., Effects of three geometrical parameters on pulsatile blood flow in complete idealised coronary bypasses, Comp. & Fluids, 69, pp. 147-171, (2012)

[10]

Bejan A., Convection Heat Transfer, (2013)

← 1 2 →