On convective mass transfer in laminar flow between two parallel electrodes in a rectangular channel

Abstract

The problem of convective diffusion in steady state laminar flow between two parallel plates is investigated, with different conditions, imposed, at the wall surfaces. An approach to the analytical solution of the convective diffusion is discussed under different boundary conditions imposed on the equation governing the physical process. A numerical procedure involving the implicit finite difference method to simulate the convective diffusion is indicated as an alternative way to get results for the same problem. The case of two parallel electrodes constituting the channel walls with a mass transfer limited electrochemical reaction is emphasized. A comparison is made between the case of two electrodes, and that for only one electrode at the channel wall, the discussion on the signal to noise ratio for these cases being also included.