Analysis of drag effects on pulsatile blood flow in a right coronary artery by using Eulerian multiphase model

被引：12

作者：

Yilmaz, Fuat ^{[1
]}

Kutlar, Ahmet Ihsan ^{[1
]}

Gundogdu, Mehmet Yasar ^{[1
]}

机构：

[1] Gaziantep Univ, Fac Engn, Dept Mech Engn, TR-27310 Gaziantep, Turkey

来源：

KOREA-AUSTRALIA RHEOLOGY JOURNAL | 2011年 / 23卷 / 02期

关键词：

two-phase; blood; right coronary artery; drag; CFD; WALL SHEAR-STRESS; CONCENTRATED DISPERSE SYSTEMS; NON-NEWTONIAN PROPERTIES; DEPENDENT MASS-TRANSFER; REDUCING POLYMERS; FLUID-FLOW; RED-CELL; RHEOLOGY; VISCOSITY; SUSPENSIONS;

D O I：

10.1007/s13367-011-0012-8

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The influence of the presence of neighboring entities on drag in blood flow where the dominating mechanisms are expected to be viscous, drag, and gravity forces is investigated in a 3-D anatomically realistic right coronary artery. A classical Eulerian multiphase model on the Fluent v6.3.26 platform is used to model pulsatile non-Newtonian blood flow. Two new drag models based on the mixture viscosity concept are developed by using the drag similarity criteria. In literature, drag models based on the mixture viscosity concept are only depended on volume fraction and show Newtonian viscosity effects on drag. However, mixture viscosity depends on the primary independent variables such as the volume fraction and the shear rate in most of the dispersed flows like blood flow. Non-Newtonian drag effects on red blood cell are so calculated by using these new volume fraction and the shear rate dependent drag models. Five different drag models including these new drag models are used to model the blood flow in this study to investigate the effectiveness of drag force model on blood flow.

引用

页码：89 / 103

页数：15

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