Onset of Oscillations in Symmetric Convective States in a Superfluid sup 3 He- sup 4 He Mixture

摘要

The oscillatory convective instability in a solution of 1.46% sup 3 He is studied in the Prandtl number range of 0.04 less than or approximately equal sigma less than or approximately equal 0.15. The observed behavior supports the theory of oscillatory convection for a classical, low-Prandtl-number, one-component fluid. A local temperature probe indicates a striking difference in the oscillatory amplitude when the sense of rotation of the convective rolls is reversed. (ERA citation 09:034583)