Entropy optimization for Darcy-Forchheimer electro-magneto-hydrodynamic slip flow of ferronanofluid due to stretching/shrinking rotating disk

• Published in: Waves in random and complex media Vol. 34; no. 3; pp. 1062 - 1094
• Main Authors: Rout, H., Mohapatra, S. S., Shaw, Sachin, Muhammad, Taseer, Nayak, M. K., Makinde, Oluwole Daniel
• Format: Journal Article
• Language: English
• Published: Abingdon Taylor & Francis 03.05.2024; Taylor & Francis Ltd
• Subjects: Conduction heating; Conductive heat transfer; Darcy-Forchheimer electro-magnetic flow; Electromagnetic fields; Entropy; entropy generation; Ferronanofluid; Flow velocity; Optimization; Porous media; Rotating disks; Slip flow; stretching/shrinking rotating disk; Suction; Thermal radiation; velocity slip
• ISSN: 1745-5030; 1745-5049
• DOI: 10.1080/17455030.2021.1927238

The flow of ferronanofluid due to a rotating disk finds its significant place in biomedical sciences, pharmaceuticals, electronics, aerodynamics etc. Entropy generation appears in the systems/processes where its minimization is needed because it prohibits the decay of available energy which in turn boosts the efficiency of the associated thermal systems where it matters the most. In view of these added advantages, the flow and heat transfer behavior of ferronanofluid subject to slip, suction, electromagnetic field, Darcy-Forchheimer effect, and viscous dissipation, Ohmic heating and thermal radiation has been explored within this research. In addition, the role of entropy minimization associated with the flow concern has been analyzed. The apposite governing equations are numerically treated via shooting method. The important outcome of the study include infusion of more porous matrix develops controlled rotating flow due to both deformed disks. Rise in slip parameter augments flow velocity for stretched RD while that shows the adverse effect for shrunk RD. Controlled rate of heat transportation due to enhanced convective heating is significant for shrunk RD than that of stretched RD. Further, low Prandtl fluids, low molecular heat conduction and liquid friction yield entropy minimization thereby leading to uplift efficiency of thermal systems.