Abstract The impact of viscous dissipation on electromagnetohydrodynamic Carreau liquid flow over a stretched plate in the presence of Joule heating is examined in this work. Melting heat conditions and a chemical reaction are included in order to examine heat and mass transport processes. To measure irreversibility and energy losses, entropy formation is investigated. This work is unique in that it applies a non‐similarity framework to electromagnetohydrodynamic Carreau fluid flow while taking into account Joule heating, viscosity dissipation, melting conditions, and chemical reaction within the Buongiorno nanofluid model. Brownian motion effects and thermophoresis are taken into consideration in the model. By using suitable non‐similarity transformations, highly nonlinear coupled partial differential equations are converted into nonlinear ordinary differential equations. The bvp4c technique in MATLAB is used to solve these problems numerically. The behaviour of the system is shown through tabular and graphical findings. The findings show that velocity field decreases as the Hartmann number, power law index, and Weissenberg number increase. Greater thermophoresis, Eckert numbers, and Brownian motion all improve heat transmission. Concentration decreases with increasing Lewis numbers and Brownian motion, while it rises with greater thermophoresis. Skin‐friction decreases by 0.37% with an increasing power‐law index but increases by 4.6% with a higher Weissenberg number. The Nusselt number decreases by 44.09% as the Eckert number increases. Entropy generation rises with both Eckert number and power‐law index. Model validation is included to reinforce reliability. The proposed framework applies to thermal management in industrial processes, petroleum and chemical engineering, mechanical systems, and biomedical engineering.
Raies et al. (Thu,) studied this question.