Viscous dissipation effect on unsteady magneto-convective heat-mass transport passing in a vertical porous plate with thermal radiation

The effects of radiative and viscous dissipation on the transfer of unsteady magnetic-conductive heat-mass across a vertically porous sheet is studied in this article. The non-dimensional ODEs are solved by applying the Finite Difference Method (FDM) through the MATLAB software numeri-cally. The fluid temperature and velocity enhance for uplifting values of the Eckert number. Enhancing values of the transpiration parameter the velocity, concentration, and temperature distributions reduce. The local skin friction enhances about 9%, and 18% due to increase the Eckert number (0.5-3.0) and Dufour number (0.5-4.0), respectively and reduces 17%, 38%, and 31% due to increase Prandtl number (0.71-7.0), magnetic force parameter (0.5-3.0), and suction parameter (0.5-3.0), respectively. Enhancing values of the Eckert number (0.5-3.0) reduces the heat transfer rate by 40%. The increasing value of the Prandtl number (0.71-7.0) and the suction parameter (0.5-3.0) increases the heat transfer rate by 27% and 92%, respectively. With an in-crease in the values of the Schmidt number (0.22-0.67), the mass transfer rate increased by approximately 94%. At last, the numerical results of this paper has compared with the previously published paper. We noticed that the comparison has an excellent acceptance.

Automated summary

This article investigates the effects of radiative and viscous dissipation on the transfer of unsteady magnetic-conductive heat-mass across a vertically porous sheet. The non-dimensional ODEs are numerically solved using the Finite Difference Method (FDM) in MATLAB software. The results show that the fluid temperature and velocity increase with higher Eckert numbers, while the velocity, concentration, and temperature distributions decrease with increasing values of the transpiration parameter. The numerical results are compared with a previously published paper and show excellent agreement.