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多孔介质期刊
影响因子: 1.49 5年影响因子: 1.159 SJR: 0.43 SNIP: 0.671 CiteScore™: 1.58

ISSN 打印: 1091-028X
ISSN 在线: 1934-0508

多孔介质期刊

DOI: 10.1615/JPorMedia.v17.i5.20
pages 391-403

NANOFLUID FLOW OVER A NONLINEAR STRETCHING SHEET IN POROUS MEDIA WITH MHD AND VISCOUS DISSIPATION EFFECTS

Ahmed A. Khidir
School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal Private Bag X01 Scottsville 3209, Pietermaritzburg, South Africa; Faculty of Technology of Mathematical Sciences and Statistics, Alneelain University, Algamhoria Street
Precious Sibanda
University of KwaZulu-Natal

ABSTRACT

In this article we investigate the flow due to a nonlinear stretching sheet in an electrically conducting nanofluid with viscous dissipation. We study the effects of Brownian motion, thermophoresis, and nanoparticle volume fraction on convective heat transfer on a nonlinearly stretching sheet placed in a porous medium. The governing partial differential equations are converted into ordinary differential equations by a similarity transformation and are solved numerically using a linearization method. Comparisons with previously published works are performed to test the validity of the obtained results. The effects of selected fluid and material parameters on the velocity as well as the temperature and nanoparticle volume fraction profiles are determined and discussed. The skin friction, heat, and mass transfer coefficients have been obtained and analyzed for various physical parametric values.