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Effect of sudden suction on the hydromagnetic natural convection from a vertical plate

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Abstract

The effects of step function change in suction velocity are investigated for a natural convection flow from a vertical porous flat plate of infinite length in the presence of transverse magnetic field for two cases namely (i) when the plate is suddenly raised to a uniform higher temperature, (ii) when the plate suddenly begins to generate a uniform heat flux at its surface. In (i) the coefficient of heat transfer becomes independent of the Hartmann numberM. In either case for a fixed time t except for correct steady state t→ ∞, the effect of the Hartmann number is to decrease both the velocity of the fluid and the skin-friction at the plate. In the correct steady state the velocity field and the skin-fiiction become independent of the Hartmann number.

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Authors and Affiliations

  1. Department of Applied Mathematics, Andhra University, 530003, Waltair

    V. V. Ramana Rao & V. Bala Prasad

Authors
  1. V. V. Ramana Rao
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  2. V. Bala Prasad
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Rao, V.V.R., Prasad, V.B. Effect of sudden suction on the hydromagnetic natural convection from a vertical plate. Proc. Indian Acad. Sci. 85, 280–288 (1977). https://doi.org/10.1007/BF03052433

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  • DOI: https://doi.org/10.1007/BF03052433

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