Realizing this thread is quite old now, but maybe it will help someone. There is an equation called "Stelling's Formula" based on observations of evaporation rates in bodies of water.
Wevap = [As + BsUinf](Psat(T)-Eatm)
where:
Wevap = surface evaporation rate (m/s),
As = 7.31x10-11...
Does anyone know what the equations governing the effects of whistling in a convoluted tube as air passes trough it are? I didn't know it was called this until today, but a convoluted tube is the real name for what many cable management tubes are. These tubes are also used in medicine for things...