Effect of Thermal Radiation and Heat Source on Transient Hydromagnetic MoS₂–Fe₃O₄–C₂H₆O₂ Hybrid Nanofluid Flow within Coaxial Parallel Disks: A Numerical Study

The study of molybdenum disulfide, along with iron oxide, has various promising applications due to its thermal, electrical, and magnetic properties. In particular, for the efficient cooling in power devices, enhanced fluid transport in medical devices, chemical processing, and cancer therapy. The utility of both nanoparticles is vital. Hence, with this motivation, this study aims to investigate the characteristics of dissipative heat influenced by the inclusion of viscous and Joule dissipation in the flow of a hybrid nanofluid comprised of molybdenum disulfide $({\mathrm{\text{MoS}}}_2)$ and iron oxide $({\mathrm{\text{Fe}}}_3{\mathrm{\text{O}}}_4)$ in the base liquid, ethylene glycol $({\mathrm{\text{C}}}_2{\mathrm{\text{H}}}_6{\mathrm{\text{O}}}_2)$, within a coaxial permeable disk. The proposed model, encompassing various thermal properties, is transformed into a non-dimensional form by applying appropriate similarity rules. Traditional numerical techniques, such as the shooting-based fourth-order Runge–Kutta method, is employed to obtain solutions. Several profiles are computed for various values of contributing factors within their appropriate ranges employing the numerical scheme implemented in MATLAB. A comparative analysis with previous studies is presented, demonstrating a strong correlation in a specific case and thereby validating the current results.