
 Session BI  Convection and Buoyancy Driven Flows II. 
  This is a multiparameter problem characterized by the mean Rayleigh number, the vertical stratification parameter, the Prandlt number, and the amplitude, \varepsilon, and frequency, ømega, of the jitter. 
  For Prandtl number =0.9 and dimensionless driving frequency ømega=96, we find convection modulated at ømega and \fracømega2, as well as conduction in the phase diagram for a range of dimensionless amplitudes and Rayleigh numbers: 1 \times 10^4 \le \Delta \le 5 \times 10^ 4 and 2000 \le Ra \le 8000. 
  Measured critical Rayleigh numbers R_c(Ømega)/R_c(0), where R_c(0) is the Soret onset, agree with the linear stability analysis for the pure fluid. 
 flux.aps.org /meetings/YR98/BAPSDFD98/abs/S2100.html (1413 words) 
