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Steady mixed convection stagnation-point flow of upper convected Maxwell fluids with magnetic field

Kumari, M and Nath, G (2009) Steady mixed convection stagnation-point flow of upper convected Maxwell fluids with magnetic field. In: International Journal of Non-Linear Mechanics, 44 (10). pp. 1048-1055.

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Abstract

The steady MHD mixed convection flow of a viscoelastic fluid in the vicinity of two-dimensional stagnation point with magnetic field has been investigated under the assumption that the fluid obeys the upper-convected Maxwell (UCM) model. Boundary layer theory is used to simplify the equations of motion. induced magnetic field and energy which results in three coupled non-linear ordinary differential equations which are well-posed. These equations have been solved by using finite difference method. The results indicate the reduction in the surface velocity gradient, surface heat transfer and displacement thickness with the increase in the elasticity number. These trends are opposite to those reported in the literature for a second-grade fluid. The surface velocity gradient and heat transfer are enhanced by the magnetic and buoyancy parameters. The surface heat transfer increases with the Prandtl number, but the surface velocity gradient decreases.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to Elsevier Science.
Keywords: Mixed convection; Stagnation-point flow; Maxwell fluid; Magnetic field; Boundary layer
Department/Centre: Division of Physical & Mathematical Sciences > Mathematics
Date Deposited: 03 Dec 2009 10:17
Last Modified: 19 Sep 2010 05:53
URI: http://eprints.iisc.ernet.in/id/eprint/25062

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