Computer Simulations of EMHD Casson Nanofluid Flow of Blood through an Irregular Stenotic Permeable Artery: Application of Koo-Kleinstreuer-Li Correlations

Abstract

A novel analysis of the electromagnetohydrodynamic (EMHD) non-Newtonian nanofluid blood flow incorporating CuO and Al2O3 nanoparticles through a permeable walled diseased artery having irregular stenosis and an aneurysm is analyzed in this paper. The non-Newtonian behavior of blood flow is addressed by the Casson fluid model. The effective viscosity and thermal conductivity of nanofluids are calculated using the Koo-Kleinstreuer-Li model, which takes into account the Brownian motion of nanoparticles. The mild stenosis approximation is employed to reduce the bi-directional flow of blood to uni-directional. The blood flow is influenced by an electric field along with a magnetic field perpendicular to the blood flow. The governing mathematical equations are solved using Crank-Nicolson finite difference approach. The model has been developed and validated by comparing the current results to previously published benchmarks that are peculiar to this study. The results are utilized to investigate the impact of physical factors on momentum diffusion and heat transfer. The Nusselt number escalates with increasing CuO nanoparticle diameter and diminishing the diameter of Al2O3 nanoparticles. The relative % variation in Nusselt number enhances with Magnetic number, whereas a declining trend is obtained for the electric field parameter. The present study’s findings may be helpful in the diagnosis of hemodynamic abnormalities and the fields of nano-hemodynamics, nano-pharmacology, drug delivery, tissue regeneration, wound healing, and blood purification systems.

Enhancing Heat Transfer in Blood Hybrid Nanofluid Flow with Ag–TiO2 Nanoparticles and Electrical Field in a Tilted Cylindrical W-Shape Stenosis Artery: A Finite Difference Approach

“…The direction of blood flow is opposite to the direction of the strongest Lorentz force. The arterial radial and axial coordinates are represented by r and z in this modeling, which uses the two-dimensional cylindrical coordinate system ( ) , , r z θ [33][34][35][36][37]. The present study focuses on the analysis of an electrically conducting incompressible unsteady blood hybrid nanofluid.…”

“…Given the unsteady nature of blood flow, pulsatile pressure gradient and wall slip effects in streaming blood are taken into consideration as well. W-shape stenosis symmetric [36]: Flow equations are presented by [33][34][35][36][37]. W-shape stenosis symmetric [36]:…”

“…Table 2 provides the thermophysical characteristics of the base fluid (blood) and the nanomaterials (silver-titanium dioxide. The nonlinear flow equations governing the system are subjected to a transformation using appropriate nonsimilar variables, as demonstrated below [33][34][35][36][37].…”

“…Table 1. Initial and boundary condition of the present model [35][36][37]. The utilization of the aforementioned variables in Equations ( 2)-( 5) results in the following transformed equations:…”

Entropy generation analysis of a ternary hybrid nanofluid (Au-CuO-GO/blood) containing gyrotactic microorganisms in bifurcated artery

“…Their study revealed the enhancement in the heat transfer property by using the nanofluid. Gürbüz et al(2021) experimentally and numerically performed the simulation of CuO-Al 2 O 3 water hybrid nanofluid through the U-type heat exchanger. The study suggested that adding fins and hybrid nanofluid can enhance the heat transfer rate in the heat exchanger.…”