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Title: Unsteady two-dimensional flow of a radiating and chemically reacting MHD fluid with time-dependent suction
Authors: Prakash, J
Ogulu, A
Keywords: Buoyancy effects
Radiative flux
Issue Date: Nov-2006
Publisher: CSIR
Series/Report no.: G01N
Abstract: The study considers the problem of unsteady two-dimensional, laminar, boundary layer flow of a viscous, incompressible, electrically conducting fluid along a semi-infinite vertical plate in the presence of thermal and concentration buoyancy effects. A time-dependent suction is assumed and the radiative flux is described using the differential approximation for radiation. Asymptotic series expansion about a small parameter e, is performed to obtain the flow fields. Our results show that when the thermal and solutal Grashof numbers increase, the thermal and concentration buoyancy effects are enhanced and so the fluid velocity increases. Furthermore, when the Prandtl and Schmidt numbers increase, the thermal and concentration levels decrease resulting in reduced fluid velocity. We, further, found that the skin-friction coefficient increases due to increase in the thermal and concentration buoyancy effects, while it decreases as a result of increase in the Schmidt number. The Nusselt number decreases as the Prandtl number increases just like the Sherwood number decreases with increase in the Schmidt number. These results are in good agreement with results from the literature.
Description: 805-810
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.44(11) [November 2006]

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