The present work explores the consequence of the flow of micropolar fluid in an inclined microchannel when exposed to linear radiation in presence of a magnetic field. The microchannel is embedded with a porous medium and the Darcy-Forchheimer model is implemented. The walls of the microchannel facilitate the simultaneous suction and injection of the micropolar fluid. A multiple slip regime and temperature jump conditions were assumed at the boundaries. The equations are modeled and nondimensionalized using nondimensional entities and further solved with the aid of the Runge-Kutta-Fehlberg method. Entropy generated in the medium and ratio of irreversibilities is also computed. Results so obtained deliberate that enhancement in Darcy number has caused an increment in entropy generation rate whereas the opposite nature is attained for the Bejan number. Magnifying the radiation parameter has resulted in diminishing the profile of entropy generation rate and Bejan number.
The tangent hyperbolic fluid model is interesting models in all the non-Newtonian fluid model, which is developed for particular applications in chemical engineering systems such as polymer solution, ceramic processing, fluid beds and oil recovery. Hence the intent of the present study is to explore the flow and thermal behavior of tangent hyperbolic fluid flowing through an upright microchannel. In the analysis, water and ethylene glycol are the base fluid with titanium and copper nanoparticles considered. The combined impact of nonlinear thermal radiation, no slip, buoyancy force, and Newton boundary condition on the thermal performance are studied, and further the skin friction and Nusselt number are examined. The thermal dependent heat source effect was also taken into account. The governing equations were solved numerically by employing Runge-Kutta Fehlberg’s fourth-fifth order. The impact of the pertinent constraint on the Nusselt number, thermal field, flow field, skin friction, Bejan number, and entropy generation are depicted graphically and examined. Entropy generation rises by 15% when ethylene glycol is a base fluid and 12% when the water a base fluid, with an enhancement of the Brinkman number by 200%. The outturn entrenched that the heat transfer rate in water-based hybrid nanofluid is more remarkable when compared with the heat transfer rate of EG-based hybrid nanofluid. It is noted that the significant increment in Nusselt number has been attained through a rise in the Weissenberg number and power law index.
The present work examines the flow and thermal energy process in conducting couple stress nanofluid flows through an oblique microchannel. The microchannel is embedded with permeable medium and thermal radiation is implemented. The microchannel boundaries retain the slip boundary conditions.
The impact of buoyancy force and magnetic field are incorporated. The temperature dependent heat source effect was also taken into account. The momentum equation has been made by the permeability of the porous medium. The equations are modeled and non-dimensionalized using non-dimensional
entities and further solved with the aid of the Runge-Kutta Fehlberg method and the shooting procedure. The detailed discussions about the importance of the effective parameters on entropy generation, the Bejan number have been observed through graphs. The findings of the examination depict
that rise in radiation parameter augments the entropy generation and the Bejan number in the channel. The entropy generation and Bejan number diminishes with inflation of the permeability parameter.
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