Exploration of Arrhenius Activation Energy on Hybrid Nanofluid Over a Rotating Radially Stretching Disk
DOI:
https://doi.org/10.54938/ijemdm.2023.02.1.563Keywords:
Hybrid Nanofluid, Arrhenius Activation Energy, Rotating and Stretching Disk, Viscous Dissipation, Magnetohydrodynamic (MHD), Bvp5c Numerical SolutionAbstract
In this study, the Arrhenius activation energy and viscous dissipation effects on the magnetohydrodynamic (MHD) flow of a hybrid nanofluid, namely Cu–Al2O3 water, over a rotating radially stretching disk are investigated. Similarity variables are employed to transform the governing partial differential equations of momentum, energy, and concentration into a system of coupled ordinary differential equations. The resulting nonlinear boundary value problem is solved numerically using the bvp5c solver in MATLAB. The effects of key physical parameters, including the Hartmann number, Eckert number, Prandtl number, Schmidt number, and activation energy parameter, on velocity, temperature, and concentration profiles are analyzed. The Hartmann number suppresses the velocity profiles while enhancing the temperature distribution. The Eckert number significantly increases the thermal boundary layer thickness due to viscous dissipation, whereas activation energy enhances mass transfer. Furthermore, the hybrid nanofluid Cu–Al2O3 water exhibits superior thermal performance compared to single nanofluids. These findings provide useful insights for optimizing thermal systems involving rotating disks, such as turbomachinery and renewable energy applications.
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