Turbulent mass transfer near liquid-fluid interface

M. Turbulent Mass Transfer near a Liquid-Fluid Interface Based on the Turbulent Diffusivity Concept Turbulent Flow of a Liquid Film on a Vertical Wall... 

Two approaches can be used for the analysis of turbulent mass transfer near a liquid-fluid interface. One has the time-averaged convective diffusion equation as the starting point. For obtaining in that procedure an equation for... 

LAMINAR AND TURBULENT FLOW IN BOUNDARY LAYERS. The fluid velocity at the solid-fluid interface is zero, and the velocities close to the solid surface are, of necessity, small. Flow in this part of the boundary layer very near the surface therefore is essentially laminar. Actually it is laminar most of the time, but occasionally eddies from the main portion of the flow or the outer region of the boundary layer move very close to the wall, temporarily disrupting the velocity profile. These eddies may have little effect on the average velocity profile near the wall, but they can have a large effect on the profiles of temperature or concentration when heat or mass is being transferred to or from the wall. This effect is most pronounced for mass transfer in liquids. 

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