
%0 Journal Article
%A Bhatia, PK 
%A Steiner, JM 
%T Oscillatory Convection in a Viscoelastic Fluid Layer in Hydromagnetics
%J Australian Journal of Physics
%D 1972/12/01
%V 25
%N 6
%P 695-702
%K 
%R https://doi.org/10.1071/PH720695
%U https://www.publish.csiro.au/paper/PH720695 
%X A study is made of the overstable mode of convection in an infinite horizontal layer of a viscoelastic fluid, heated from below, in the presence of a magnetic field. It is shown first that the problem is characterized by a variational principle. Proper solutions are then obtained for the case of two rigid boundaries using the variational method. It is found that the magnetic field has a stabilizing effect on the thermally induced overstability in a viscoelastic fluid, as in the case of an ordinary viscous fluid. The thermodynamic significance of the variational principle is also considered. 
