Computational Assessment of Magnetized Dissipative Thermo Convective Micropolar Nanofluid Flow Past a Rotating Isothermal Cone with Variable Temperature, Hall Current, and Joule Heating
Authors: Anjum Asra , Gaffar Shaik Abdul , Kumar D. Sateesh , Peerusab Samdani 
Published: February 2025

A computational examination of heat transfer is conducted on nonlinear, steady-state laminar convection boundary layer flows of a micropolar Buongiorno’s incompressible nanofluid through a spinning cone by considering the impacts of the Hall current, Viscous dissipation Eckert
number, Magnetic parameter, and Eringen number coupling parameter are investigated in this paper. The nanofluid rheological and Eringen’s micropolar models are combined to forecast the microstructural properties. Employing a second-order accurate implicit finite-difference Keller-Box
methodology, numerical solutions have been obtained for the modified nondimensional conservation equations, with associated wall and free stream boundary constraints. Our present code is validated using earlier studies from literature, and an excellent correlation is achieved. The micropolar
model incorporates micro-element gyratory rotating motions and precisely models some polymeric fluids. An in-depth analysis is done on the effects of several emerging dimensionless parameters on axial, tangential, and angular velocities, temperature, and concentration profiles, in the boundary
layer regime is examined extensively by visualization. Furthermore, the rate of local skin friction, wall couple stress the rate of surface heat transfer Nusselt number, and rate of mass transfer Sherwood number are tabulated for specific parameters with variation in key control parameters.
The discoveries offer novelty perspectives and valuable information on intricate magnetic spin processes and serve as a strong foundation with the intent to enhance computational fluid dynamics research. Applications for the research include chemical engineering, biomedical, polymeric
manufacturing, nanotechnology production, and crude oil purification, among others. It is observed that axial, tangential, and angular velocity profiles are enhanced with an increment in Hall current, whereas temperature concentration profiles decay. Increasing Eckert number strongly appreciates
axial, angular velocities and temperature profiles However, depreciates tangential and concentration profiles substantially. With an elevation in the Magnetic interaction parameter, it is noticed that axial, tangential, and angular velocity are interaction parameter, it is noticed that axial,
tangential, and angular velocity are decelerated whereas temperature concentration profiles are enhanced. Moreover, with elevation in Eringen number coupling parameter and Eckert number the axial skin friction, and Sherwood number are improved whereas tangential skin friction, wall
couple stress, and Nusselt number (are suppressed. With an increment in magnetic interaction parameter further along the surface, it is observed that there is a strong reduction in magnitudes of axial and tangential skin friction and Nusselt number nevertheless Wall couple stress and Sherwood
number are amplified. The results highlight how crucial it is to consider several simultaneous impacts to precisely forecast and optimize the behavior of nanofluids in real-world engineering scenarios.