Significance of Arrhenius activation energy on three-dimensional unsteady nanofluid flow with nonlinear thermal radiation and Joule heating via wavelet technique

This investigation focuses on the unsteady three-dimensional electrically conducting nanofluid flow over a bilateral nonlinear stretching sheet. A novel mathematical model is developed to incorporate the influences of Arrhenius activation energy, nonlinear thermal radiation, and Joule heating. The Taylor wavelet series collocation method (TWSCM) is employed for analysis. The governing partial differential equations (PDEs) are transformed by applying suitable similarity transformation into nonlinear coupled ordinary differential equations (ODEs). These ODEs are then solved using the TWSCM approach. This method allows us to explore how various physical parameters influence mass and heat transfer in the nanofluid flow. The findings reveal that the thermal Biot number and activation energy parameter significantly enhance the concentration field. Moreover, the heat transfer rate is found to increase with the temperature ratio and thermal Biot parameters while decreasing with the activation energy parameter.