Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.162...85s&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 162, no. 1, Dec. 1989, p. 85-106. Research supported by UGCI.
Astronomy and Astrophysics
Astrophysics
Free Convection, Incompressible Flow, Magnetohydrodynamics, Rotating Bodies, Asymptotic Methods, Coriolis Effect, Electrical Resistivity, Magnetic Field Configurations, Reynolds Number, Velocity Distribution, Viscous Flow
Scientific paper
The classical Rayleigh problem has been extended to the case of the hydromagnetic free-convective flow of an electrically-conducting and incompressible viscous fluid past an infinite vertical naturally permeable wall in a rotating system. The applied transverse magnetic field is fixed with the moving wall and the magnetic Reynolds number of the flow is taken small so that the induced magnetic field can be neglected in comparison to the applied magnetic field. The permeable wall starts moving from rest in the still fluid and thus arises an initial value problem whose solution has been obtained by the Laplace transform method for two important cases impulsive as well as accelerated start of the plate. Mathematical expression for skin friction components have been also obtained in a closed form. Asymptotic behavior of the solution is analyzed for both the cases, and some interesting particular cases have also been encountered. Influence of various physical parameters occurring into the problem has been discussed with the aid of graphs and tables.
Singh Ambuj K.
Singh J. N.
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