chapter  4
44 Pages


Convection involves the movement of neutral or ionic species i with the solution that surrounds them as shown in Figure 4.1. The flux of these species through an element of area dS is a vector written as

where c is the molar concentration (mol·m-3) and v the velocity vector. The norm of this flux vector is a number of moles per unit time and area (mol·m-2·s-1).