Enhanced heat transfer in micropolar fluids with inclined magnetic field and chemical reaction used in solar and geothermal energy systems: A comparative solution with semi-analytical approaches

Micropolar fluids have emerged as promising in modern energy systems due to their microstructure and enhanced thermal properties. This present study explores the behavior of free convective polar fluid subjected to an inclined magnetic field. Further, the impact of thermal radiation, internal heat generation, and chemical reaction effect enriches the flow phenomena. The study is vital for numerous real-world applications particularly, in solar thermal collectors, geothermal heat exchangers, electronic cooling systems and energy harvesting devices where the utmost control over heat is critical. The transport model with the governing equations is formulated and suitable dimensionless forms are utilized for the conversion of the non-dimensional form of the model which lead to the involvement of certain characterizing factors. Moreover, to ensure the accuracy, the system is handled through dual approach-employing the semi-analytical Adomian decomposition method (ADM) along-side the numerical approach of fourth-order Runge-Kutta combined with shooting technique. The comprehensive parametric analysis illustrates the impact of several factors involved in the flow phenomena. The results are depicted for the variation of different factors within their range and depicted graphically. Moreover, the important findings are; Assisting flow enhances the velocity distribution near to the lower wall of the channel and the impact is reversed for the opposing case at the upper wall. Thermal and solutal distributions are favourably enhances for the increasing Peclet number but the Nusselt number and Sherwood number retards significantly.