A liquid flows over a thin, flat sheet of a slightly soluble solid. Over the region in which diffusion is occurring, the liquid velocity may be assumed to be parallel to the plate and to be given by v = ay, where y is the vertical distance from the plate and a is a constant. Show that the equation governing differential equation mass transfer of solute A to the flowing liquid, under certain simplifying assumptions, is

As part of the analysis, list the simplifying assumptions, and propose reasonable boundary conditions.

Transcribed Image Text:

(²c^¸ PcA DAB дсА = ay- дх? дх ду?