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Unsteady compressible boundary layer flow in the stagnation region of a sphere with a magnetic field

Takhar, HS and Yano, K and Nakamura, S and Nath, G (1997) Unsteady compressible boundary layer flow in the stagnation region of a sphere with a magnetic field. In: Archive of Applied Mechanics (Ingenieur Archiv), 67 (7). pp. 478-486.

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Abstract

Abstract: An analysis is performed to study the unsteady compressible laminar boundary layer flow in the forward stagnation-point region of a sphere with a magnetic field applied normal, to the surface. We have considered the case where there is an initial steady state that is perturbed by the step change in the total enthalpy at the wall. The nonlinear coupled parabolic partial differential equations governing the flow and heat transfer have been solved numerically using a finite-difference scheme. The numerical results are presented, which show the temporal development of the boundary layer. The magnetic field in the presence of variable electrical conductivity causes an overshoot in the velocity profile. Also, when the total enthalpy at the wall is suddenly increased, there is a change in the direction of transfer of heat in a small interval of time.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Springer.
Keywords: Unsteady compressible flow;boundary layer;stagnation point flow;MHD;nite difference scheme.
Department/Centre: Division of Physical & Mathematical Sciences > Mathematics
Date Deposited: 22 Jun 2011 06:42
Last Modified: 22 Jun 2011 06:42
URI: http://eprints.iisc.ernet.in/id/eprint/38560

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