Understanding the coupled influence of magnetic fields and microrotation on heat and mass transfer in chemically reacting fluids is essential for the design of advanced cooling systems, polymer processing technologies, and biomedical transport devices. While previous studies have examined magneto-micropolar flows or chemically reacting transport processes independently, the combined effects of micromagnetorotation and chemical reactions in micropolar boundary layer flows remain largely unexplored. To address this gap, the present study develops a unified computational model for a chemically reacting micropolar boundary layer flow incorporating micromagnetorotation under a low Reynolds number approximation. The governing equations describing momentum, microrotation, temperature, magnetic induction, and species concentration are first reduced to a coupled system of nonlinear ordinary differential equations. These equations are then solved using the shooting method. The accuracy of the numerical procedure is verified through both step-size sensitivity and computational domain independence tests. The numerical results show that the thermal boundary layer becomes progressively thinner as the Prandtl number increases. For example, increasing the Prandtl number from 0.7 to 7 reduces the thermal boundary layer thickness by approximately 35%. A similar trend is observed for mass transport, where raising the Schmidt number from 0.6 to 2.0 decreases the concentration boundary layer thickness by nearly 40%.
The magnetic Reynolds number has a noticeable influence on the flow, leading to higher fluid velocity as well as stronger magnetic induction,
which reflects enhanced electromagnetic interaction between the fluid and the applied magnetic field. It is also found that increasing the magnetization parameter promotes microrotational motion, resulting in measurable changes in both the momentum and thermal fields. Unlike previous investigations, the present study examines the combined influence of micromagnetorotation and chemical reaction within a unified computational framework for micropolar boundary layer flow. This integrated analysis provides a clearer understanding of the interaction between magnetic effects, fluid microstructure, and reactive mass transport. The results demonstrate that micromagnetorotation not only modifies the concentration distribution but also affects the associated heat transfer characteristics. These findings may be useful for the design and optimization of engineering systems involving magnetically controlled heat and mass transfer, including biomedical transport processes and advanced manufacturing applications.