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A study of the combined effect of thermal radiative transfer and a magnetic field on the gravitational convection of an ionized fluid

Published online by Cambridge University Press:  28 March 2006

M. P. Murgai  and
P. K. Khosla
M. P. Murgai
Affiliation:
Defence Science Laboratory, Metcalfe House, Delhi 6, India
P. K. Khosla
Affiliation:
Defence Science Laboratory, Metcalfe House, Delhi 6, India
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Abstract

The effect of radiative transfer on the thermal stability of an ionized fluid, in the presence of uniform vertical magnetic field has been examined from hydromagnetic approximations. Two asymptotic cases (i) when the fluid is optically thin and (ii) when it is optically thick, have been examined in detail. The principle of exchange of stabilities and the concept of over-stability have been discussed and the physical conditions under which the former will hold, obtianed. Also the conditions as to which type of instability will arise first are derived and it has been shown that in the presence of large magnetic field over-stability arises earlier than convection under the first approximation.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 14 , Issue 3 , November 1962 , pp. 433 - 451
Copyright
© 1962 Cambridge University Press

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