Control of Dissipative Heat on the MHD Casson Fluid With the Interaction of Velocity Slip and Convective Condition Over a Stagnation Point

ABSTRACT The growing need for enhanced thermal regulation is vital in recent advancements such as biomedical engineering, polymer processing, etc. In particular, the non‐Newtonian fluid likely Casson fluid with yield stress is used in these areas because of its ability to prepare biofluids and industrial suspensions effectively. The proposed analysis explores the magnetohydrodynamic (MHD) stagnation point flow of Casson fluid via an expanding surface for the impact of dissipative heat and chemical reaction. The heat transport phenomenon is enhanced for the combined impact of Joule dissipation and thermal radiation for the assumption of the Rosseland approximation. The analysis presents its vital role for the introduction of velocity slip and convective heating boundary conditions. Moreover, the modeled problem for the integration of above‐mentioned forces is characterized by the use of the similarity rule, which develops the role of diversified factors on the flow phenomena. To execute the physical behavior of the factors involved in the model, first of all, a standard numerical method, i.e., shooting associated with Runge–Kutta fourth‐order, is employed utilizing a built‐in bvp4c function in MATLAB. In connection with the study reported earlier, the present result is compared and validated with the numerical result in particular cases. Further, the important outcomes of the study are the enhanced non‐Newtonian Casson parameter that retards the velocity profile, and the heat transfer rate is also controlled by the increasing thermal radiation, whereas the Eckert number favors a significant enhancement in the heat transfer rate.