JP Journal of Heat and Mass Transfer
Volume 19, Issue 1, Pages 97 - 128
(February 2020) http://dx.doi.org/10.17654/HM019010097 |
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EFFECTS OF PULSATILITY AND DOUBLE STENOSES ON POWER LAW MODEL OF BLOOD FLOW AND MASS TRANSPORT IN VESSEL
Reima D. Alsemiry, Sarifuddin, Prashanta K. Mandal, Hamed M. Sayed and Norsarahaida Amin
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Abstract: This paper investigates the effect of flow pulsatility and a pair of stenoses having varying severities and lengths on the unsteady flow characteristics of blood and mass transfer. The streaming blood is represented by the Power law model and the governing equations consisting of a set of non-linear partial differential equations are solved numerically using the finite-difference scheme, popularly known as Marker and Cell (MAC) method. Numerical solutions carried out for various parameters viz. Reynolds number, severity of stenoses, length of stenoses and the distance between them show that increasing severity of stenosis causes to develop recirculation remarkably at the downstream of stenosis. A multiple separation region is produced in the case of pulsatile inlet condition and the peak wall shear stress (wss) is slightly higher than the parabolic inlet condition. In the case of Power law model, pressure drop and the peak wss are lower than that recorded by the Newtonian model. |
Keywords and phrases: mass transfer, power law model, stenosed artery, pulsatile flow, mathematical modelling.
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