Biomedical aspects of entropy generation on electromagnetohydrodynamic blood flow of hybrid nanofluid with nonlinear thermal radiation and non-uniform heat source/sink

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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MHD and Slip Effect in Micropolar Hybrid Nanofluid and Heat Transfer over a Stretching Sheet with Thermal Radiation and Non-uniform Heat Source/Sink

CFD letters ◽

10.37934/cfdl.12.11.121130 ◽

2020 ◽

Vol 12 (11) ◽

pp. 121-130

Author(s):

Nur Faizzati Ahmad Faizal ◽

Norihan Md Ariffin ◽

Yong Faezah Rahim ◽

Mohd Ezad Hafidz Hafidzuddin ◽

Nadihah Wahi

Keyword(s):

Heat Transfer ◽

Angular Velocity ◽

Heat Source ◽

Thermal Radiation ◽

Stretching Sheet ◽

Velocity Profiles ◽

Hybrid Nanofluid ◽

Temperature Profiles ◽

Uniform Heat ◽

Source Sink

In the presence of slips, non-uniform heat source/sink, thermal radiation and magnetohydrodynamic (MHD), micropolar hybrid nanofluid and heat transfer over a stretching sheet has been studied. The problem is modelled as a mathematical formulation that involves a system of the partial differential equation. The similarity approach is adopted, and self-similar ordinary differential equations are obtained and then those are solved numerically using the shooting method. The flow field is affected by the presence of physical parameters such as micropolar parameter, magnetic field parameter, suction parameter and slip parameter whereas the temperature field is affected by thermal radiation parameter, space-dependent parameter, temperature-dependent internal heat generation/absorption parameter, Prantl number and Biot number. The skin friction coefficient, couple stress and local Nusselt number are tabulated and analysed. The effects of the governing parameters on the velocity profiles, angular velocity profiles and temperature profiles are illustrated graphically. The results of velocity profiles, angular velocity profiles and temperature profiles are also obtained for several values of each parameters involved.

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MHD, Nonlinear thermal radiation and non-uniform heat source/sink effect on Williamson nanofluid over an inclined stretching sheet

Malaya Journal of Matematik ◽

10.26637/mjm0803/0106 ◽

2020 ◽

Vol 8 (3) ◽

pp. 1337-1345

Author(s):

Srinivasulu T. ◽

Shankar Bandari

Keyword(s):

Heat Source ◽

Thermal Radiation ◽

Stretching Sheet ◽

Nonlinear Thermal Radiation ◽

Uniform Heat ◽

Sink Effect ◽

Source Sink

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Biot number effect on MHD flow and heat transfer of nanofluid with suspended dust particles in the presence of nonlinear thermal radiation and non-uniform heat source/sink

Acta et Commentationes Universitatis Tartuensis de Mathematica ◽

10.12697/acutm.2018.22.09 ◽

2018 ◽

Vol 22 (1) ◽

pp. 91-114 ◽

Cited By ~ 1

Author(s):

B. J. Gireesha ◽

R. S. R. Gorla ◽

M. R. Krishnamurthy ◽

B. C. Prasannakumara

Keyword(s):

Heat Transfer ◽

Heat Source ◽

Thermal Radiation ◽

Biot Number ◽

Dust Particles ◽

Nonlinear Thermal Radiation ◽

Flow And Heat Transfer ◽

Uniform Heat ◽

Suspended Dust ◽

Source Sink

This paper considers the problem of steady, boundary layer flow and heat transfer of dusty nanofluid over a stretching surface in the presence of non-uniform heat source/sink and nonlinear thermal radiation with Biot number effect. The base fluid (water) is considered with silver (Ag) nanoparticles along with suspended dust particles. The governing equations in partial form are reduced to a system of non-linear ordinary differential equations using suitable similarity transformations. An effective Runge–Kutta–Fehlberg fourth-fifth order method along with shooting technique is used for the solution. The effects of flow parameters such as nanofluid interaction parameter, magnetic parameter, solid volume fraction parameter, Prandtl number, heat source/sink parameters, radiation parameter, temperature ratio parameter and Biot number on the flow field and heat-transfer characteristics were obtained and are tabulated. Useful discussions were carried out with the help of plotted graphs and tables. Under the limiting cases, comparison with the existing results was made and found to be in good agreement.

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