Collect. Czech. Chem. Commun. 1998, 63, 132-140

Diffusion-Layer Theory for Flows Under Apparent Wall Slip

Ondřej Wein

Institute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic,165 02 Prague 6-Suchdol, Czech Republic


An explicit analytical formula is given for the overall mass transfer coefficient between the bulk of flowing microdisperse liquid and a small but finite active part of a solid surface. The apparent wall slip effect inside a diffusion layer is reflected through the local power-law velocity profile, vx(z) = Bzp, and a distribution B = B(x,y) over the solid surface.

Keywords: Diffusion layer; Microdisperse liquids; Apparent wall slip.