A consideration on the relation between the oscillatory thermocapillary flow in a liquid bridge and the hydrothermal wave in a thin liquid layer

Abstract

The present study aims to establish relation between the hydrothermal wave (HW) in a thin liquid layer and the oscillatory flow in a half-zone liquid bridge with a small height to radius ratio. Numerical and experimental studies are performed on the HW in a liquid layer. Near the hot wall, the propagation direction of the HW is similar to that of the temperature traveling wave in the short liquid bridge. Thus, the oscillatory thermocapillary flow in the short liquid bridge should be interpreted to be closely similar to the HW appearing in the vicinity of the hot wall of the liquid layer.