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THERMAL ANALYSIS IN UNSTEADY OSCILLATORY DARCY BLOOD FLOW THROUGH STENOSED ARTERY

Shankar, G; Siva, E P; Tripathi, D; Anwar Beg, O

Authors

G Shankar

E P Siva

D Tripathi



Contributors

Abstract

This study investigates the effects of heat source and thermal radiation on blood flow in stenosed arteries using Casson fluid. It explores the behavior of unsteady non-Newtonian fluid under oscillatory Darcy flow, focusing on momentum and energy behavior, and conducts a parametric analysis to assess the impact of the Nusselt number and Casson parameter. Higher values of the thermal radiation and Casson-viscous parameters result in enhanced velocity fields. The Brinkman model accurately represents the resistance to flow caused by the porous material, known as Darcy resistance. The inner space of the coronary artery generates cholesterol-rich fatty plaques and blood clots that block the artery, simulating the diseased condition of blood circulation in this study. A set of non-dimensional variables converts the governing equations into dimensionless partial differential equations, yielding an analytical solution relevant to blood circulation in highly porous, stenosed coronary arteries. The current study demonstrates that blood flow may be manipulated by adjusting the intensity of the external magnetic field, while the temperature of the blood can be managed by either increasing or decreasing its thermal conductivity. The graphical representation demonstrates the impact of different physical parameters on velocity, temperature, and concentration profiles. The significant results of the current study are that, the fluid velocity diminishes with rising magnetic and Biot numbers but exhibits an increase when considering the Darcy number and Hall parameter. There is an increase in the wall shear stress as the Casson 2 parameter (í µí»½ increases from 0.1 to 0.3. oor í µí»½ = 0.3 , the percentage change along the axial direction (í µí±¥ is more pronounced. This is because the wall shear stress is proportional to the number of Casson parameters.

Journal Article Type Article
Acceptance Date Sep 12, 2024
Deposit Date Sep 18, 2024
Journal INTERNATIONAL JOURNAL OF THERMOFLUIDS
Peer Reviewed Peer Reviewed
Keywords Casson Blood flow; EMHD; Hall effect; Heat transfer; Exact solution; Slip & convective boundary condition; Heat source; Thermal radiation
Publisher URL https://www.sciencedirect.com/journal/international-journal-of-thermofluids