TRAVELING-WAVE CONVECTION PATTERNS IN AN ANNULAR CELL

Fast traveling wave convection rolls, localized rolls, non-uniform velocity rolls and slow rolls are four distinct patterns observed during the evolution of convection patterns in an ethanol-water binary mixture. These Rayleigh-Benard experiments were carried out in an annular cell with an aspect ratio of 80:2:1. The mixture has a separation ratio value of psi congruent-to -0.09. The convection was driven by a constant heat flux less than 5% above the onset heat flux.