Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988ap%26ss.141..193e&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 141, no. 2, Feb. 1988, p. 193-198.
Astronomy and Astrophysics
Astrophysics
Magnetic Effects, Magnetohydrodynamic Flow, Porous Plates, Temperature Distribution, Unsteady Flow, Nonnewtonian Fluids, Transient Heating, Velocity Distribution, Viscoelasticity
Scientific paper
The unsteady flow of an electrically conducting fluid past an infinite plate with constant suction is investigated in the presence of an external magnetic field and buoyancy forces. The temperature of the plate is assumed to oscillate in time about a constant mean and the flow is considered to be free of convection. For the method of solution, we have employed a small parameter approach when this small parameter is a non-dimensional quantity which is related to the viscoelastic constant of the fluid. Analytical expressions are obtained for the temperature distribution and the velocity profile of the fluid. These analytical results clearly show that the velocity profile is strongly damped when the magnetic field is more intense. This means that the applied magnetic field causes the fluid to move slower as compared with the non-magnetic case.
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