Eddy Diffusivity in the Viscous Sublayer

John Newman John Newman
Российский электрохимический журнал
Abstract / Full Text

An attempt is made to resolve a long standing difference in the predicted distribution of the eddy diffusivity in the viscous sublayer, where the literature shows a dependence on either the cube or the fourth power of the distance from a solid wall. The resolution suggested is that a y3 dependence prevails very close to the wall while a y4 dependence may prevail in the outer part of the viscous sublayer near the border with the outer turbulent flow. However, at high values of the Schmidt number, the overall mass-transfer rate will show behavior corresponding to the y3 dependence, and any hints of the y4 dependence would be very hard to observe experimentally.

Author information
  • Department of Chemical and Biomolecular Enginering, University of California, 94720-1462, Berkeley, California, USA

    John Newman

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