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[2018-Vol.15-Issue 1]Non-Newtonian Flow of Blood in a Catheterized Bifurcated Stenosed Artery
Post: 2018-03-18 17:15  View:2034
Journal of Bionic Engineering
 
Volume 15, Issue 1, October 2018, Pages 173-184.
 
Jagadis Chandra Misra1*, Gopal Chandra Shit2, Ranjan Pramanik3
1. Centre for Healthcare Science and Technology, Indian Institute of Engineering Science and Technology, Shibpur 711103, India
2. Department of Mathematics, Jadavpur University, Kolkata 700032, India
3. Department of Mathematics, Indian Institute of Technology, Kharagpur 721302, India
 
Abstract  The paper is devoted to study the non-Newtonian behavior of blood flowing in an artery having a stenosis, in a situation when a catheter has been inserted into it. The blood rheology is described by Herschel-Bulkley fluid model. The flow configuration is constructed by choosing suitable curvature at the lateral junction, where the flow separation is initiated. The effects of insertion of catheter and that of yield stress of blood on the velocity distribution, rate of flow and flow resistance of blood, distribution of shear stress at the arterial wall and the location of yield plane are investigated. The results provide some useful information for the predic-tion/treatment of some arterial diseases and circulatory disorders of the cardiovascular system, in a situation, when a stenosis is developed on the endothelium of the daughter artery / bifurcated artery. The study reveals that if the ratio between the radii of the catheter and the artery is increased, the shear stress at the arterial wall diminishes. However, when the bifurcation angle is increased, the wall shear stress is enhanced.

Key words:  Herschel-Bulkley fluid model      arterial bifurcation      catheterized artery      yield plane      flow resistance 

Full text is available at    http://jbe.jlu.edu.cn/EN/Y2018/V15/I1/173

 

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