Numerical simulations for three-dimensional rotating porous disk flow of viscoelastic nanomaterial with activation energy, heat generation and Nield boundary conditions

Nanofluids have several industrial and technological applications such as space technology, cooling systems, chemical production, information technology, nuclear reactors, food safety, transportation, and medical applications like chemotherapy, destroying of injured tissues, pharmacological processes, artificial lungs, diagnosis of several diseases, etc. In this investigation, the entropy generation phenomenon with applications of activation energy and heat source/sink has been numerically evaluated. The porous disk with uniform rotation about fixed axis accounted the flow. The Nield's constraints for the concentration profile are implemented. The thermal aspect of Bejan number and entropy generation phenomenon is addressed to reduce the energy loss. The modeling based on such flow constraints results nonlinear expressions for which numerical outcomes via Keller Box technique are computed. The importance of parameters for the velocity change, heat transfer phenomenon, concentration profile, entropy generation, and Bejan number is addressed. The summarized results convey that azimuthal velocity declined with viscoelastic parameter. The increasing rate of entropy generation is noticed for the viscoelastic parameter and Hartmann number, while both parameters present a reversing behavior against Bejan number. The Bejan number enhanced via concentration and temperature difference parameters.

Automated summary

This study evaluates the thermodynamic properties of nanofluids, finding that entropy generation and energy loss can be reduced by adjusting related parameters. Nonlinear expressions were computed via Keller Box technique, revealing significant impacts of viscoelastic parameter and Hartmann number on entropy generation.