Theoretical Exploration of Bioconvection Magneto Flow of Micropolar Nanomaterial Off‐Centered Stagnation Point Framed by Rotating Disk

Abstract This study explores the bioconvection flow of MHD Micropolar nanomaterial having with motile microorganisms off‐centered stagnation point across the rotating. The flow field study takes into account the impact of radiative flow, chemically reactive species, and the convective flow condition. The Buongiorno two‐component nanoscale model is used to simulate Brownian movement with thermophoretic body force phenomena. Using dimensional similarity factors, the nonlinear partial differential equations related to boundary conditions are transformed by a complex dimensionless ordinary differential expression. The homotopy analysis method is applied to utilize the ordinary differential expression and envision the influence of resulting variables such as viscosity variable, spin gradient parameter, microinertia density parameter, porosity parameter, rotational parameter, Biot number, Brownian movement, thermal radiation, Prandtl number, and Bioconvection Lewis number over velocities, heat, and mass transfer characteristics in visually and the table formats. It is observed that the larger magnitude of the material variable, magnetic variable, and porosity variable reduces the radial velocity. Moreover, microrotational profiles depreciate quickly as spin gradient viscosity, micro‐inertia density. The fluid temperature increases in direct correlation with thermal radiation, thermophoresis, and Biot number while microorganism density distribution reduces due to the larger values of Peclet number and Bioconvection Lewis number.