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多孔介质期刊
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ISSN 打印: 1091-028X
ISSN 在线: 1934-0508

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多孔介质期刊

DOI: 10.1615/JPorMedia.2020025508
pages 907-922

FLOW OF JEFFREY NANOFLUIDS OVER CONVECTIVELY HEATED OSCILLATORY MOVING SHEET WITH MAGNETIC FIELD AND POROSITY EFFECTS

Sami Ullah Khan
Department of Mathematics, COMSATS University Islamabad Sahiwal Campus, Sahiwal 57000, Pakistan
Sabir Ali Shehzad
Department of Mathematics, COMSATS University Islamabad, Sahiwal 57000, Pakistan

ABSTRACT

In the present investigation, the flow of Jeffrey nanofluids is analyzed by using convective heating conditions. The nanoparticles are considered over a stretched surface that moves and oscillates periodically due to sine oscillations of the sheet. The combined porous and magnetic effects are taken into consideration for flow of non-Newtonian fluids with nanoparticles, and their influence is graphically underlined and discussed for some motions with engineering applications. The linear Darcy model with uniform porosity is implemented to take care of flow through saturated media. Moreover, this investigation also presents the results of linearly stretching surfaces in a particular situation. The local similarity solution is developed for coupled nonlinear partial differential equations arising for non-Newtonian fluids by homotopic method. A detailed graphical analysis based on various values of thermophysical parameters has been presented. It is found that amplitude of oscillations in velocity increases with increasing Deborah number, whereas it follows an opposite trend with increasing combined porosity and magnetic parameter. Moreover, the rate of heat transfer increases with increasing combined parameter and ratio of relaxation to retardation time. The temperature of nanofluid is enhanced by increasing thermal Biot number and thermophoresis parameter.

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