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Flow and heat transfer over an unsteady stretching surface with Hall effect

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Abstract

The present investigation is concerned with the effect of Hall currents on the flow and heat transfer of an electrically conducting fluid over an unsteady stretching surface in presence of a strong magnetic field. The induced magnetic field is neglected while the electron-atom collision frequency is assumed to be relatively high, so that the Hall effect is assumed to exist. The incorrect similarity transformation of Elbashbeshy and Bazid (Heat Mass Transfer 41:1–4, 2004). is corrected and a physically realistic distribution of the velocity and temperature is obtained. Using a similarity transformation the governing time dependent boundary layer equations for momentum and thermal energy are reduced to a set of coupled ordinary differential equations which are then solved numerically by the shooting method. Effects of the magnetic field, M , Hall parameter, m, and the unsteadiness parameter, S, on the velocity and temperature profiles as well as the local skin friction coefficients and the heat transfer rate are shown graphically.

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  1. Mohamed Abd El-Aziz

    Present address: Faculty of Science, Mathematics Department, King Khalid University, Abha, 9004, Saudi Arabia

Authors and Affiliations

  1. Faculty of Science, Mathematics Department, Helwan University, P.O. Box 11795, Cairo, Egypt

    Mohamed Abd El-Aziz

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  1. Mohamed Abd El-Aziz
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Correspondence to Mohamed Abd El-Aziz.

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Abd El-Aziz, M. Flow and heat transfer over an unsteady stretching surface with Hall effect. Meccanica 45, 97–109 (2010). https://doi.org/10.1007/s11012-009-9227-x

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  • DOI: https://doi.org/10.1007/s11012-009-9227-x

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