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MHD Flow with Hall Current and Ion-Slip Effects due to a Stretching Porous Disk

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  • Faiza M. N. El-Fayez

Abstract

A partially ionized fluid is driven by a stretching disk, in the presence of a magnetic field that is strong enough to produce significant hall current and ion-slip effects. The limiting behavior of the flow is studied, as the magnetic field strength grows indefinitely. The flow variables are properly scaled, and uniformly valid asymptotic expansions of the velocity components are obtained. The leading order approximations show sinusoidal behavior that is decaying exponentially, as we move away from the disk surface. The two-term expansions of the radial and azimuthal surface shear stress components, as well as the far field inflow speed, compare well with the corresponding finite difference solutions, even at moderate magnetic fields. The effect of mass transfer (suction or injection) through the disk is also considered.

Suggested Citation

  • Faiza M. N. El-Fayez, 2013. "MHD Flow with Hall Current and Ion-Slip Effects due to a Stretching Porous Disk," Journal of Applied Mathematics, Hindawi, vol. 2013, pages 1-6, November.
    • Handle: RePEc:hin:jnljam:638940
    DOI: 10.1155/2013/638940
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