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A Numerical Study on the Effects of Reynolds Number on Blood Flow with Spiral Velocity Through Regular Arterial Stenosis
Paper Type  |
Contributed Paper |
Title |
A Numerical Study on the Effects of Reynolds Number on Blood Flow with Spiral Velocity Through Regular Arterial Stenosis |
Author |
Md. Alamgir Kabir, Md. Ferdous Alam and Md. Ashraf Uddin |
Email |
akabir-mat@sust.edu |
|
Abstract: In the present study, numerical simulation has been carried out with varying Reynolds numbers (Re) to investigate the effect of spiral blood flow in artery due to stenosis. The simulation has been performed by using the standard k-w model and artery has been created with a single stenosis of 75% cross-sectional area reduction. Blood has been treated as a non-newtonian fluid and numerically modelled by using the well-known Carreau model. Parameters of Carreau model have been chosen in a manner to establish a reasonable non-newtonian phenomenon. The study found that pressure dropped at 0m axial position and remain constant for rest of the artery. The effect of Re was found negligible for pressure. Both the axial velocity and spiral velocity were found to be increase with the increase of Re. The peak of Turbulent Kinetic Energy (TKE) was found to be peaked at stenosis and increased with the increase of Re. Similar to TKE, wall shear stress also peaked at the stenosis and increased with the increase of Re. Findings of the present study gives a proper insights about the effect of arterials stenosis on fundamental fluid properties. |
|
Start & End Page |
2515 - 2527 |
Received Date |
2017-10-11 |
Revised Date |
|
Accepted Date |
2018-04-03 |
Full Text |
Download |
Keyword |
Non-newtonian, blood, Reynolds number, stenosis, wall shear stress, spiral flow |
Volume |
Vol.45 No.6 (September 2018) |
DOI |
|
Citation |
Kabir M.A., Alam M.F. and Uddin M.A., A Numerical Study on the Effects of Reynolds Number on Blood Flow with Spiral Velocity Through Regular Arterial Stenosis, Chiang Mai Journal of Science, 2018; 45(6): 2515-2527. |
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