Title

Axisymmetric magneto-hydrodynamic (MHD) flow and heat transfer at a non-isothermal stretching cylinder

Authors

Authors

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

Comments

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Abbreviated Journal Title

Appl. Math. Comput.

Keywords

Axisymmetric flow; Non-isothermal stretching cylinder; Variable thermal; conductivity; Internal heat generation/absorption; Heat transfer; Finite; difference method; POWER-LAW FLUID; HYDROMAGNETIC FLOW; VISCOELASTIC FLUID; MASS-TRANSFER; SHEET; SURFACE; Mathematics, Applied

Abstract

An investigation is made to study the effects of transverse curvature and the temperature dependent thermal conductivity on the magneto-hydrodynamic (MHD) axisymmetric flow and heat transfer characteristics of a viscous incompressible fluid induced by a non-isothermal 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 non-isothermally. Here the thermal conductivity is assumed to vary linearly with temperature. Using a similarity transformation, the governing system of partial differential equations is first transformed into coupled non-linear ordinary differential equations with variable coefficients. The resulting intricate non-linear boundary value problem is solved numerically by a second order finite difference scheme for different values of the pertinent parameters for two cases: (i) the prescribed surface temperature (PST case) and (ii) the prescribed heat flux (PHF case). Numerical results are obtained for two different cases namely, zero and non-zero values of the curvature parameter to get the effects on the velocity and temperature fields. The combined effects of the curvature parameter and the thermal conductivity parameter are examined. The physical significances of the numerical results are presented for several limiting cases. (C) 2012 Elsevier Inc. All rights reserved.

Journal Title

Applied Mathematics and Computation

Volume

219

Issue/Number

8

Publication Date

1-1-2012

Document Type

Article

Language

English

First Page

3993

Last Page

4005

WOS Identifier

WOS:000311431000055

ISSN

0096-3003

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