Transverse Plane Waves in a Binary Fluid Mixture. II. The Role of the Soret Effect

Abstract

The transverse plane waves propagating in the horizontal direction in an unbounded binary fluid mixture having vertical temperature and concentration gradients are investigated in the presence of the Soret effect. It is shown that undamped waves cannot exist since the conditions for the propagation of undamped waves contradict the stability criteria for the undisturbed basic state. It is also shown that weakly damped waves can exist under the conditions that the undisturbed basic state is stable.