Interpretation of entropy generation in Williamson fluid flow with nonlinear thermal radiation and first‐order velocity slip

Purpose This study aims to investigate the irreversibility associated with the Fe3O4–Co/kerosene hybrid-nanofluid past a wedge with nonlinear radiation and heat source. Design/methodology/approach This study reports the numerical analysis of the hybrid nanofluid model under the implications of the heat source and magnetic field over a static and moving wedge with slips. The second law of thermodynamics is applied with nonlinear thermal radiation. The system that comprises differential equations of partial derivatives is remodeled into the system of differential equations via similarity transformations and then solved through the Runge–Kutta–Fehlberg with shooting technique. The physical parameters, which emerges from the derived system, are discussed in graphical formats. Excellent proficiency in the numerical process is analyzed by comparing the results with available literature in limiting scenarios. Findings The significant outcomes of the current investigation are that the velocity field uplifts for higher velocity slip and magnetic strength. Further, the heat transfer rate is reduced with the incremental values of the Eckert number, while it uplifts with thermal slip and radiation parameters. An increase in Brinkmann’s number uplifts the entropy generation rate, while that peters out the Bejan number. The results of this study are of importance involving in the assessment of the effect of some important design parameters on heat transfer and, consequently, on the optimization of industrial processes. Originality/value This study is original work that reports the hybrid nanofluid model of Fe3O4–Co/kerosene.

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Nonlinear thermal radiation and chemical reaction effects on Maxwell fluid flow with convectively heated plate in a porous medium

Heat Transfer-Asian Research ◽

10.1002/htj.21404 ◽

2018 ◽

Vol 48 (2) ◽

pp. 744-759 ◽

Cited By ~ 42

Author(s):

Kh. Hosseinzadeh ◽

M. Gholinia ◽

B. Jafari ◽

A. Ghanbarpour ◽

H. Olfian ◽

...

Keyword(s):

Porous Medium ◽

Fluid Flow ◽

Thermal Radiation ◽

Chemical Reaction ◽

Maxwell Fluid ◽

Nonlinear Thermal Radiation ◽

Heated Plate

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Thermal transport of hybrid nanofluids with entropy generation: A numerical simulation

International Journal of Modern Physics B ◽

10.1142/s0217979221502180 ◽

2021 ◽

pp. 2150218

Author(s):

Hassan Waqas ◽

Faisal Fareed Bukhari ◽

Taseer Muhammad ◽

Umar Farooq

Keyword(s):

Thermal Conductivity ◽

Thermal Radiation ◽

Entropy Generation ◽

Industrial Process ◽

Velocity Slip ◽

Variable Thermal Conductivity ◽

Process Improvements ◽

Radiation Entropy ◽

Hybrid Nanofluids ◽

Nonlinear Pattern

In this research, thermal radiation, entropy generation and variable thermal conductivity effects on hybrid nanofluids by moving sheet are analyzed. The liquid is placed by stretchable flat wall that is flowing in a nonlinear pattern. Thermal conductivity changes with temperature governed by thermal radiation and MHD is incorporated. Approximations of boundary layer correspond to a set of PDEs which are then changed into ODEs by considering suitable variables. The resulting ODEs are solved using the bvp4c method. The implication with considerable physical characteristics on temperature, entropy generation and velocity profile is graphically represented and numerically discussed. Entropy generation increases for increasing Reynolds number, velocity slip parameter, Brinkman number and magnetic parameter. Scientists have recently established a rising interest in the importance of nanoparticles due to their numerous technical, industrial and commercial uses. The provided insights can be used in extrusion application areas, macromolecules, biomimetic systems, energy production and industrial process improvements.

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