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http://hdl.handle.net/2074/233
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| Title: | EEstimation of increased flow resistance in a narrow catheterized artery — A theoretical model |
| Authors: | Dash, R K
Jayaraman, G
Mehta, K N |
| Keywords: | Casson fluid
flow
Catheterized artery |
| Issue Date: | 1996 |
| Citation: | Journal of Biomechanics, 29( 7), 917-930 |
| Abstract: | The changed flow pattern in a narrow atheterized artery is studied and an estimate of the increased flow resistance is made. The anomalous behaviour of blood in small blood vessels has been taken into account by modelling blood as a Casson fluid possessing some finite yield stress. Both the cases of steady and pulsatile flow situations are studied. The pulsatile flow is analysed by considering the pressure gradient as a periodic function of
time with small inertial effects. The resulting quasi-steady non-linear coupled implicit system of differential equations governing the flow are solved using a perturbation analysis, where it is assumed that the Womersley frequency parameter is small (a < 1) which is reasonable for physiological situations in small blood vessels as well as in coronary arteries. The effect of pulsatility, catheter radius and yield stress of the fluid on the yield plane
locations, velocity distribution, flow rate, shear stress and frictional resistance are investig... |
| URI: | http://eprint.iitd.ac.in/dspace/handle/2074/233 |
| Appears in Collections: | Mathematics
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