International Journal of Science, Engineering and TechnologyAuthors: Polarapu.Padma, Professor, Dr. J. Manjula, Lecturer in Mathematics
Abstract: The present investigation explores the influence of chemical reaction on magnetohydrodynamic (MHD) hybrid nanofluid flow induced by a nonlinear stretching sheet. The hybrid nanofluid is formulated by dispersing copper (Cu) and aluminum oxide (Al₂O₃) nanoparticles in water as the base fluid. The governing partial differential equations describing momentum, energy, and concentration transport are transformed into coupled nonlinear ordinary differential equations through suitable similarity transformations. The transformed equations are solved numerically using the Runge–Kutta–Fehlberg fourth–fifth order method together with the shooting technique. The effects of magnetic parameter, chemical reaction parameter, Brownian motion, thermophoresis, nonlinear stretching parameter, and nanoparticle volume fraction on velocity, temperature, and concentration distributions are analyzed graphically and numerically. The results reveal that increasing magnetic field strength suppresses the fluid velocity due to Lorentz force effects, whereas temperature distribution increases significantly. Chemical reaction reduces concentration boundary layer thickness and enhances the Sherwood number. Hybrid nanofluids exhibit superior thermal performance compared to conventional nanofluids due to enhanced thermal conductivity. Comparative analysis with previously published studies demonstrates excellent agreement, validating the present numerical model. The present study is applicable in polymer extrusion, cooling technologies, biomedical engineering, nuclear reactors, and thermal processing systems.
