Hydromagnetic flow and heat transfer of a non-Newtonian power law fluid over a vertical stretching sheet

    Authors

    K. V. Prasad; P. S. Datti;K. Vajravelu

    Comments

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    Abbreviated Journal Title

    Int. J. Heat Mass Transf.

    Keywords

    Stretching sheet; Power law fluid; Modified Prandtl number; Magnetic; parameter; Buoyancy parameter; Skin friction; Nusselt number; CONTINUOUS MOVING SURFACE; LAMINAR MIXED CONVECTION; BOUNDARY-LAYER; EQUATIONS; MAGNETOHYDRODYNAMIC FLOW; VARIABLE TEMPERATURE; CONDUCTING; FLUID; MASS-TRANSFER; SUCTION; PLATE; INJECTION; Thermodynamics; Engineering, Mechanical; Mechanics

    Abstract

    We consider the steady state, viscous, incompressible two-dimensional magneto hydrodynamic flow of an electrically conducting power law fluid over a vertical stretching sheet The stretching of the surface velocity and the prescribed surface temperature are assumed to vary linearly with the distance from the slit The coupled partial differential equations governing the flow and heat transfer are transformed into non-linear coupled ordinary differential equations by a similarity transformation The transformed boundary layer equations are solved numerically by Keller-Box method for several sets of values of the parameters governing the flow and heat transfer. The flow and heat transfer characteristics are analysed and discussed for different values of the parameters. We observe that the local skin friction coefficient and the local Nusselt number decrease as the magnetic parameter Mn increase for fixed value of the buoyancy parameter lambda The results obtained reveal many interesting behaviors that warrant further study of the equations related to non-Newtonian fluid phenomena. especially the shear-thinning phenomena. Shear thinning reduces the wall shear stress (C) 2009 Elsevier Ltd. All rights reserved.

    Journal Title

    International Journal of Heat and Mass Transfer

    Volume

    53

    Issue/Number

    5-6

    Publication Date

    1-1-2010

    Document Type

    Article

    Language

    English

    First Page

    879

    Last Page

    888

    WOS Identifier

    WOS:000274361400008

    ISSN

    0017-9310

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