MARANGONI EFFECT IN THE PRESENCE OF BULK TURBULENCE

A relationship between the surface convection associated with local su rface-tension gradients (Marangoni effect) and turbulent pulsations is considered. An energy balance equation is used to evaluate the veloci ty of near-surface convective patterns. The model is based on the assu mption that the local surface-tension gradients are induced by surface chemical reactions of surfactants that takes place in the fluid movin g along the surface in two-dimensional roll-like cells. The model obta ined makes it possible to calculate the rate of interphase mass transf er. (C) 1998 Elsevier Science Ltd. All rights reserved.