Abstract
Evaporation process from granular porous media and rocks under artificially regulated conditions is studied experimentally and theoretically. Evaporation volume from opening surface of cubic samples is measured in high accuracy, and the decay process of void water by evaporation with elapsed time is visualized by means of a microscope apparatus. It is disclosed experimentally that evaporation occurs through three different steps of water content in voids, and the evaporation process can be explained by numerical solution of coupled heat and mass equations.
