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Mixed convection flow over a vertical plate with localized heating (cooling), magnetic field and suction (injection)

Chamkha, Ali J. and Takhar, Harmindar S. and Nath, Girishwar (2004) Mixed convection flow over a vertical plate with localized heating (cooling), magnetic field and suction (injection). Heat and mass transfer, 40 (11). pp. 835-841. ISSN 0947-7411

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Abstract

An analysis is carried out to study the effects of localized heating (cooling), suction (injection), buoyancy forces and magnetic field for the mixed convection flow on a heated vertical plate. The localized heating or cooling introduces a finite discontinuity in the mathematical formulation of the problem and increases its complexity. In order to overcome this difficulty, a non-uniform distribution of wall temperature is taken at finite sections of the plate. The nonlinear coupled parabolic partial differential equations governing the flow have been solved by using an implicit finite-difference scheme. The effect of the localized heating or cooling is found to be very significant on the heat transfer, but its effect on the skin friction is comparatively small. The buoyancy, magnetic and suction parameters increase the skin friction and heat transfer. The positive buoyancy force (beyond a certain value) causes an overshoot in the velocity profiles.

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