VISCOUS DISSIPATION AND JOULE HEATING INFLUENCES PAST A STRETCHING SHEET IN A POROUS MEDIUM WITH THERMAL RADIATION SATURATED BY SILVER–WATER AND COPPER–WATER NANOFLUIDS

The aim of the present study is to numerically scrutinize the influence of viscous dissipation, Joule heating, thermal radiation, and suction/injection on magnetohydrodynamic (MHD) flow of water-based nanofluids (Ag–water and Cu–water) past a flat stretching sheet with the involvement of porous media. The fundamental partial differential equations (PDEs) are converted into dimensionless ordinary differential equations (ODEs) applying suitable transformations and elucidated numerically via a fourth–fifth-order Runge–Kutta–Fehlberg scheme through a shooting algorithm. The velocity and temperature profiles are portrayed for various values of magnetic parameter, Eckert number, heat generation/absorption parameter, permeability parameter, thermal radiation parameter, and suction/injection parameter. Comparison of solution fields of both Ag–water and Cu–water nanofluids is examined through graphs and tables. It has been examined that increasing value of suction/injection parameter enhances the heat transfer coefficient, while it diminishes with enhancing the porosity parameter. Also, the upshots illustrate that viscous dissipation and thermal radiation parameters have a trend to accelerate the boundary layer thickness.

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