Ferrite nanoparticles Ni- ZnFe2O4 , Mn- ZnFe2O4 and Fe2O4 in the flow of ferromagnetic nanofluid
Department of Mathematics, Quaid-I-Azam University 45320, 44000, Islamabad, Pakistan
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Accepted: 18 July 2017
Published online: 5 September 2017
The performance of convective heat transfer is elevated in boundary layer flow regions via nanoparticles. A magnetic dipole in the presence of ferrite nanoparticles plays a vital role in controlling the thermal and momentum boundary layers. In view of this, the impacts of a magnetic dipole on the nano boundary layer, laminar, and steady flow of an incompressible ferromagnetic NiZnFe2O4-C2H6O2 (nickel zinc ferrite-ethylene glycol), MnZnFe2O4-C2H6O2 (manganese zinc ferrite-ethylene glycol), and Fe2O4-C2H6O2 (magnetite ferrite-ethylene glycol) nanofluids are characterized for the first time in the present analysis. Flow is caused by a linear stretching sheet. Fourier’s law of heat conduction is hired for the evaluation of heat flux. Impacts of emerging parameters on the magneto-thermomechanical coupling are analyzed numerically. It is seen that the characteristics of magneto-thermomechanical interaction decelerate the movements of fluid particles, thereby strengthen the skin friction coefficient and reduce the heat transfer rate at the surface. Further, it is evident that a solid volume fraction has increasing behaviour on the rate of heat transfer in the boundary layer. Comparisons with available results for specific cases are found in excellent agreement.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, 2017