Fluid Flow and Heat Transfer over a Permeable Stretching Cylinder

    Authors

    K. Vajravelu; K. V. Prasad; S. R. Santhi;V. Umesh

    Comments

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    Abbreviated Journal Title

    J. Appl. Fluid Mech.

    Keywords

    Thermo-physical properties; Fluid flow; Heat transfer; Permeable; cylinder; Boundary layer flow; BOUNDARY-LAYER-FLOW; SATURATED POROUS-MEDIUM; POWER-LAW FLUID; VARIABLE; VISCOSITY; VISCOELASTIC FLUID; SURFACE; SHEET; SUCTION; PLATE; Thermodynamics; Mechanics

    Abstract

    In this paper, we analyze the effects of thermo-physical properties on the axisymmetric flow of a viscous fluid induced by a stretching cylinder in the presence of internal heat generation/absorption. It is assumed that the cylinder is stretched in the axial direction with a linear velocity and the surface temperature of the cylinder is subjected to vary linearly. Here, the temperature dependent thermo-physical properties namely, the fluid viscosity and the fluid thermal conductivity are respectively assumed to vary as an inverse function of the temperature and a linear function of the temperature. The governing system of partial differential equations is converted into a system of coupled non-linear ordinary differential equations with variable coefficients. The resulting system is solved numerically using a second order finite difference scheme known as the Keller-box method. The governing equations of the problem show that the flow and heat transfer characteristics depend on six parameters, namely the curvature parameter, fluid viscosity parameter, injection/suction parameter, variable thermal conductivity parameter, heat source/sink parameter and the Prandtl number. The numerical values obtained for the velocity, temperature, skin friction, and the Nusselt number are presented through graphs and tables for several sets of values of the pertinent parameters. The results obtained for the flow and heat transfer characteristics reveal many interesting behaviors that warrant further study on the axisymmetric flow phenomena. Comparisons with the available results in the literature are presented as special cases.

    Journal Title

    Journal of Applied Fluid Mechanics

    Volume

    7

    Issue/Number

    1

    Publication Date

    1-1-2014

    Document Type

    Article

    Language

    English

    First Page

    111

    Last Page

    120

    WOS Identifier

    WOS:000333378800012

    ISSN

    1735-3572

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