INSTABILITY OF THE MOTION OF A SPHERICAL DROP IN A VERTICAL TEMPERATURE-GRADIENT

THE STABILITY of the motion of a spherical drop is analyzed in the presence of Marangoni effect generated by heterogeneity of a temperature field. The solution of the linearised Navier-Stokes equations, describing the motion of a drop is found. Using the classical approach of the linear theory of stability, the equation determining the values of frequences of disturbances is obtained. The given numerical example indicates the existence of disturbances growing in time, what means the instability of the investigated motion.