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The skin friction in the unsteady free-convection flow past an accelerated plate

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Abstract

In this paper the unsteady laminar free-convection flow of a viscous incompressible fluid, past an accelerated infinite vertical porous plate subjected to a constant suction (or injection) in considered. Numerical results for the skin-friction on the plate are obtained for the class of accelerated motions whose velocity is of the formU 0 t n wheret is time,U 0 a constant, andn is a positive integer. The skin friction tends to zero with increasingt when the Grashof number Gr=λ2, the Prandtl number σ=1,n=0, and λ>0 which corresponds to suction.

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Authors and Affiliations

  1. International Centre for Theoretical Physics, Trieste, Italy

    M. A. Hossain & L. K. Shayo

Authors
  1. M. A. Hossain
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  2. L. K. Shayo
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On leave of absence from the Department of Mathematics, University of Dhaka, Bangladesh.

On leave from absence from the Department of Mathematics, University of Dar-es-Salaam, Tanzania.

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Hossain, M.A., Shayo, L.K. The skin friction in the unsteady free-convection flow past an accelerated plate. Astrophys Space Sci 125, 315–324 (1986). https://doi.org/10.1007/BF00648030

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  • DOI: https://doi.org/10.1007/BF00648030

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