Performance of k-ω and k-ε Model for Blood Flow Simulation in Stenosed Artery

Authors

  • Md Alamgir Kabir Department of Mathematics, Shahjalal University of Science and Technology, Sylhet-3114, Bangladesh
  • Kausari Sultana Department of Mathematics, Shahjalal University of Science and Technology, Sylhet-3114, Bangladesh
  • Md Ashraf Uddin Department of Mathematics, Shahjalal University of Science and Technology, Sylhet-3114, Bangladesh

DOI:

https://doi.org/10.3329/ganit.v40i2.51314

Keywords:

Stenosis; Turbulence; Artery; Wall shear stress

Abstract

Blood flow through arterial stenosis can play a crucial role at the post stenotic flow regions. This produces a disturbance in the normal flow path. The intensity of the flow disturbance (i.e. laminar, transitional and turbulent flow characteristics) depends not only on the severity of the stenosis but also on the pattern of the geometrical model. In that case, the turbulence model plays vital role to measure these flow disturbances. However, it is very important to choose a proper flow simulation model that can predict the flow behavior of fluid accurately and efficiently with less computational cost and time. Thus, this study aims to analyze the results of two turbulence models i.e. k-ω and k-ε for blood flow simulation to compare their performance for the prediction of the flow behavior. Simulations have been performed with 75% area reductions in the arteries. The results of simulation show that, the flow parameters obtained from the k-ε model exhibits lack of fits with the experimental data. On the other hand, k-ω model can capture large scale gradient in the different parameters of blood flow and has a good agreement with the experimental data. This study suggests that, k-ω model has the better performance comparing to k-ε model to predict the behavior of blood flow in stenosed artery.

GANIT J. Bangladesh Math. Soc. 40.2 (2020) 111-125

Downloads

Download data is not yet available.
Abstract
16
PDF
7

Downloads

Published

2021-01-11

How to Cite

Kabir, M. A., Sultana, K., & Uddin, M. A. (2021). Performance of k-ω and k-ε Model for Blood Flow Simulation in Stenosed Artery. GANIT: Journal of Bangladesh Mathematical Society, 40(2), 111–125. https://doi.org/10.3329/ganit.v40i2.51314

Issue

Section

Articles