Modelling Evaporation of a Liquid

OKeeffe

I'm looking for a general model that I can use to approximate the evaporation rate of a small pool of liquid. The purpose is to calculate the rate at which a few mL of liquid is evaporating at the bottom of a cylindrical test chamber for an experiment. I figured that I wouldn't have any trouble finding the solution to this problem, as it seems pretty standard. It could be approximated as the evaporation of a liquid from a plane. But, I haven't come across a solution yet. Does anyone know where I might find one?