Thermal analysis of nanolayer interfaces and nanoparticle shape reactivity in EMHD micromagnetorotational ternary nanofluid flow within deceased bifurcated artery

Abstract

At the cutting edge of industrial and bionanoscience research, investigating the synergistic effects of magnetization and EMHD on flow dynamics at nanolayer interfaces and the bio-thermal responses of nanostructures in micromagnetorotational nanofluids represents a pioneering endeavor. Building upon this novel concept, the present study introduces a theoretical inquiry into the influence of ternary composite nanoparticle on biofluid flow within stenosed carotid arteries. The meticulously simulated flow scenario encompasses a spectrum of physical phenomena, including heat sources, Joule heating, viscous and buoyancy forces. Utilizing the homotopy perturbation method, the research provides rapidly converging series solutions for complex flow equations, illustrating the effects on various hemodynamic profiles. Key findings reveal that together with electromagnetic force and magnetization significantly improve flow velocity by approximately 0.01946% at r $=0.44$ than without its presence, but slows down around 0.0165% by thermal buoyancy forces in both restricted regions. Enhanced viscous dissipation reduces flow resistance, particularly for blade-shaped nanoparticles, which achieve temperature increases of 0.0366% and 0.1631% in narrowed and dilated segments, respectively. These nanoparticles shape also induce oscillations in heat transfer, whereas platelet-shaped nanolayered particles enhance localized thermal transfer, resulting in heat transfer enhancements of 72.50%, for ternary nanofluids at $z=1.8$. Magnetization boosts the microrotational dynamics of bio-elements by 0.0116% in the nanoparticle-targeted region of the narrowed segment, with a notable reduction of 3.5574% observed in the tapered section. Furthermore, the microrotation effect minimizes the entropy rates by 0.631% and 3.751% at r $=0.8$ in the respective sections. These insights collectively hold potential for advancing medical technologies based on bioelectromagnetic principles.