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Unsteady mixed convection flow from a rotating vertical cone with a magnetic field

Takhar, HS and Chamkha, AJ and Nath, G (2003) Unsteady mixed convection flow from a rotating vertical cone with a magnetic field. In: Heat and Mass Transfer, 39 (4). pp. 297-304.

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Abstract

An analysis is developed to study the unsteady mixed convection flow over a vertical cone rotating in an ambient fluid with a time-dependent angular velocity in the presence of a magnetic field. The coupled nonlinear partial differential equations governing the flow have been solved numerically using an implicit finite-difference scheme. The local skin friction coefficients in the tangential and azimuthal directions and the local Nusselt number increase with the time when the angular velocity of the-cone increases, but the reverse trend is observed for decreasing angular velocity. However, these are not mirror reflection of each other. The magnetic field reduces the skin friction coefficient in the tangential direction and also the Nusselt number, but it increases the skin friction coefficient in the azimuthal direction. The skin friction coefficients and the Nusselt number increase with the buoyancy force.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Springer.
Keywords: Unsteady mixed convection;Magnetic effects.
Department/Centre: Division of Physical & Mathematical Sciences > Mathematics
Date Deposited: 25 Aug 2011 06:24
Last Modified: 25 Aug 2011 06:24
URI: http://eprints.iisc.ernet.in/id/eprint/40300

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