Evaporation of Water from a Wet T-Shirt
This Demonstration shows how the rate of evaporation of water from a flat surface changes with temperature, wind speed, drying time, solar irradiance, air pressure and relative humidity. Selecting a location determines the last three variables, while the first three are controlled with sliders. The changing level of water in the beaker serves as a proxy for the amount of water that would evaporate from a hanging shirt under such conditions. The moving water molecules on the T-shirt serve as a visual representation of the process of evaporation as they turn into water vapor above the shirt and eventually dissipate into the atmosphere.
This Demonstration is based on the Shuttleworth equation for evaporation .
 W. J. Shuttleworth, “Putting the ‘Vap’ in Evaporation,” Hydrology and Earth System Sciences, 11(1), 2007 pp. 210–244. doi:10.5194/hess-11-210-2007.
Submission from the Compute-to-Learn course at the University of Michigan.