oa Taguchi Analysis on the Aspects of Nanolayer Thermal Conductivity at the Solid-Liquid Interface, Shape and Aspect Ratio of Nanoparticles

The dynamics of nanofluids on rotating disks is significantly relevant in microscale and industrial transport processes, especially when integrated with non-Newtonian and microstructural influences. In view of this, the current work examines the flow of micropolar nanofluid across an off-centered rotating disk, including the effects of quadratic thermal radiation and convective heat transfer.  The effect of the nanoparticles’ morphological features, particularly their shape and aspect ratio, as well as the role of the nanolayer thermal conductivity at the solid-liquid interface, are also studied to evaluate how they affect the nanofluid’s effective transport capabilities. Further, the Runge-Kutta Fehlberg’s fourth-fifth order scheme is employed to numerically solve the reduced equations. Moreover, the Taguchi approach is utilized to study the heat transportation rate. The significance of various parameters on the fluid profiles is illustrated graphically. The results show that non-spherical nanoparticles diminish the thermal efficiency more than brick and cylindrical particles. Increasing the radiation parameter and the Biot number enhances the thermal profile. Taguchi analysis shows that the temperature ratio has more influence on the Nusselt number (59.33%), whereas the magnetic parameter has the least impact (4.30%). This comprehensive approach has the potential to significantly enhance the design of thermal management systems, rotating machinery, and microfluid applications that increase heat transmission.