This study seeks to theoretically analyze the simultaneous influence of thermal radiation, viscous dissipation, heat generation/absorption, and suction/injection on the behavior of Williamson blood-based nanofluid over a permeable vertical expanding sheet under an induced magnetic field (IMF) and convective boundary conditions. The novelty of this work lies in employing magnetic cobalt ferrite nanoparticles, which exhibit strong potential for hyperthermia applications and have not been widely investigated under multiple interacting physical effects. Using the boundary layer approach, the governing equations are altered into a system of dimensionless ordinary differential equations (ODEs) through suitable similarity functions. The solutions are acquired via Mathematica computational software by applying the Chebyshev spectral approach. Graphical and tabular illustrations are provided to highlight the impact of the main controlling factors. The findings demonstrate that increasing the nanoparticle volume fraction, mixed convection, and induced magnetic parameters considerably improve the heat transmission rate. A higher Williamson parameter strengthens local skin friction, whereas suction and injection increase the Nusselt number. The temperature field is furthermore intensified by viscous dissipation, radiation, and the Biot number. These enhancements, attributed to the superior thermal conductivity of cobalt ferrite nanoparticles, are critical for efficient magnetic hyperthermia therapy, where accurate temperature regulation ensures precise tissue targeting and increases the curative effects. To assure the validity of the numerical results, a comparison with previous studies was accomplished, which has shown an overwhelming concurrence.
El-Ashhab et al. (2026) studied this question.