© 1987 by Oxford University Press
CELL SIZES AT THE ONSET OF OSCILLATORY CONVECTIVE INSTABILITY IN A LAYER OF LOW-PRANDTL-NUMBER FLUID SUBJECT TO ROTATION AND A VERTICAL MAGNETIC FIELD
(
Aerodynamics Division, Aeronautical Research Laboratories Port Melbourne, Victoria 3207, Australia
Department of Mathematics, Monash University Clayton, Victoria 3168, Australia
)
The computed theoretical predictions of cell sizes at the onset of direct and oscillatory instabilities when a rotating layer of mercury is heated from below and subjected to the influence of a vertical magnetic field are compared with the experimentally determined values of Nakagawa (1). The point of transition from oscillatory instability to direct instability which is manifested in a discontinuous change in the cell sizes is also investigated.