Abstract
An eddy diffusivity model for high Schmidt number mass transfer over regular two-dimensional rough surfaces is presented. The two empirical parameters, n and β, included in the modeled turbulent mass diffusivity distribution, D t ∝ y + n , are evaluated from previous experimental results. Present and literature data suggest that these parameters are almost constant for 2 < p/e < 6 and 0.2 < w/e < 1.4 and there is evidence that outside these ranges the parameters should be made function of roughness geometry.
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