| Abstract: | The thermovibrational instability of a plane horizontal layer of incompressible binary mixture is analyzed with account for the Soret thermodiffusion effect. To find the stability threshold in the linear approximation, Floquet's theory is used. It is shown that, depending on the amplitude and frequency, vibration can stabilize an unstable ground state or destabilize fluid equilibrium. Apart from the synchronous or subharmonic responses to external influences, instability may be related to quasi-periodic perturbations. The behavior of the threshold values at the low-frequency limit is considered. |
