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MHD flow of nanofluids over an exponentially stretching sheet in a porous medium with convective boundary conditions

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Chinese Physics B 2014年第5期23卷 360-367页

作者： T.Hayat M.Imtiaz A.Alsaedi R.Mansoor Department of Mathematics Quaid-I-Azam University Department of Mathematics Faculty of ScienceKing Abdulaziz University

This article concentrates on the steady magnetohydrodynamic （MHD） flow of viscous nanofluid. The flow is caused by a permeable exponentially stretching surface. An incompressible fluid fills the porous space. A comparative study is made for the nanoparticles namely Copper （Cu）, Silver （Ag）, Alumina （A1203） and Titanium Oxide （TiO2）. Water is treated as a base fluid. Convective type boundary conditions are employed in modeling the heat transfer process. The non-linear partial differential equations governing the flow are reduced to an ordinary differential equation by similarity transformations. The obtained equations are then solved for the development of series solutions. Convergence of the obtained series solutions is explicitly discussed. The effects of different parameters on the velocity and temperature profiles are shown and analyzed through graphs.

关键词： MHD nanofluid exponentially stretching sheet porous medium convective boundary conditions

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Diffusion of chemically reactive species in third grade fluid flow over an exponentially stretching sheet considering magnetic field effects

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Chinese Journal of Chemical Engineering 2017年第3期25卷 257-263页

作者： T.Hayat M.Ijaz Khan M.Waqas A.Alsaedi T.Yasmeen Department of Mathematics Quaid-I-Azam University Nonlinear Analysis and Applied Mathematics(NAAM) Research Group Department of MathematicsFaculty of ScienceKing Abdulaziz University Department of Mechanical Engineering Imperial College London Department of Mechanical Engineering University of Engineering & Technology Peshawar

This article addresses the magnetohydrodynamics(MHD) flow of a third grade fluid over an exponentially stretching sheet. Analysis is carried out in the presence of first order chemical reaction. Both cases of constructive and destructive chemical reactions are reported. Convergent solutions of the resulting differential systems are presented in series forms. Characteristics of various sundry parameters on the velocity, concentration, skin friction and local Sherwood number are analyzed and discussed.

关键词： Chemical reaction Third grade fluid exponentially stretching sheet Magnetic field

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