Collect. Czech. Chem. Commun. 1996, 61, 1267-1284

Generalized Transient Leveque Problem

Ondřej Wein

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


Response of an electrodiffusion friction sensor to a finite step of the wall shear rate is studied by numerically solving the relevant mass-transfer problem. The resulting numerical data on transient currents are treated further to provide reasonably accurate analytical representations. Existing approximations to the general response operator are checked by using the obtained exact solution.

Keywords: Unsteady mass transfer; Concentration boundary layer; Limiting diffusion current.