Effects of heat transfer, body acceleration and hybrid nanoparticles (Au–Al ² O ³ ) on MHD blood flow through a curved artery with stenosis and aneurysm using hematocrit-dependent viscosity

Abstract

The present study investigates the heat transfer and body acceleration effects on unsteady MHD blood flow through a curved artery in the presence of stenosis and aneurysm using hybrid nanoparticles (Au−Al2O3/blood). For realistic behavior of blood flow, blood is assumed to be a pulsatile, laminar, incompressible, viscous fluid with hematocrit-dependent viscosity. A uniform magnetic field is applied in the radial direction to the blood flow with radiation effect. The governing momentum and energy equations are solved using Crank-Nicolson Finite difference method through an accurate mesh using rectangular mesh units. The obtained data for both stenotic and aneurysm segments are graphically depicted and analyzed for various physical parameters. To examine the overall behavior of blood flow patterns, velocity contours for several emergent parameters have been displayed. Using clinically realistic hemodynamic data, comprehensive solutions for gold and gold- aluminium oxide hybrid mediated blood flow are presented. It is observed that the velocity profile rises as the volume fraction of gold (Au) nanoparticles increases, while, the velocity profile decreases as the volume fraction of aluminium oxide (Al2O3) nanoparticles increases. It is noted that impedance of the flow decreases with increment in body acceleration parameter B2, while, WSS increases with increment in B2. The resistive impedance is higher for curved arteries than straight artery. The findings show that hybrid nanoparticles (Au−Al2O3/blood) reduce the values of hemodynamic parameters such as wall shear stress and resistive impedance, and blood flow rate decreases with an increment in hm and magnetic field strength. The current findings are consistent with recent findings in other studies. The outcomes of the study may be helpful in the diagnosis and treatment of plaque rupture, cancer, infections, brain aneurysms, and blood clot removal. Results may also be used to design and analyze biomedical devices for great potential treatment modalities, the anticancer drug industry, and nano-drug delivery systems.

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