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IJPAP Vol.47(09) [September 2009] >


Title: Combined effects of Hall current and rotation on free convection MHD flow in a porous channel
Authors: Singh, K D
Kumar, Rakesh
Keywords: Oscillatory free convective flow
Rotating
Hall current
MHD flow
Issue Date: Sep-2009
Publisher: CSIR
Abstract: A theoretical analysis of an oscillatory free convective MHD flow of a viscous incompressible and electrically conducting fluid in a vertical porous channel in the presence of Hall current has been carried out. The two insulating porous plates are subjected to a constant injection and suction. A uniform magnetic field is applied in the direction normal to the plates. The entire system rotates about the axis normal to the plates with uniform angular velocity Ω. For small and large rotations, the dependence of the steady and unsteady resultant velocities and their phase differences on various parameters have been discussed in detail. The results show that both steady and unsteady resultant velocities increase rapidly from zero near the stationary plate and then approach to unity in the form of damped oscillations. For large values of rotations and injection/suction at the plates, a phase lag is also observed for both steady and unsteady phase angles.
Page(s): 617-623
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Source:IJPAP Vol.47(09) [September 2009]

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