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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.44 [2006] >
IJPAP Vol.44(11) [November 2006] >
| 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
Suction/blowing |
| Issue Date: | Nov-2006 |
| Publisher: | CSIR |
| IPC Code: | 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. |
| Page(s): | 805-810 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.44(11) [November 2006]
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