Abstract
An experimental study of the temperature field on the surface of horizontal liquid layer (HFE-7100) evaporating into gas flow (Air) has been performed. Temperature gradient of the gas-liquid interface has been measured with the help of Titanium 570M IR camera. Shear stresses on gas-liquid interface induced by thermocapillary effect and inert gas flow have been defined.
Highlights
The fluid motion driven by thermal, concentration or charge gradients is a common and important phenomenon in nature
The gas flow rate was in the range 100-1000 ml/min that corresponds to gas average velocities for 0,0138 to
Infrared study and measurements of the temperature field on the surface of horizontal liquid layer evaporating into gas flow has been performed
Summary
The fluid motion driven by thermal, concentration or charge gradients is a common and important phenomenon in nature. The concentration and the charge gradients are absent or could be neglected (pure liquids, the absence of electric or magnetic field) but the presence of a temperature gradient in a fluid layer can trigger the important convective motions. In these cases, two mechanisms have been spotted to be responsible for the convection. When the convection is induced by the surface tension, it is referred to as Marangoni-Bénard convection. It was found that evaporation is a means of cooling the layer surface, and a driving power for the development of the convective instabilities
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