Experimental Study and 3D Numerical Simulation of the Evaporation of a Sessile Droplet

A mathematical model and a 3D computer code simulating the evaporation of a sessile water droplet placed on a solid substrate have been developed. The numerical results are compared and validated, on the one hand with the literature and on the other hand with experimental results, for the case of a sessile water droplet evaporating at ambient temperature. Good agreement was observed in these comparisons. The experimental results show that the droplet follows the pinned mode during evaporation, therefore this hypothesis will be considered in the numerical simulation. When the substrate is heated, its nature (glass or PTFE) influences the evaporation kinetics and modifies the behavior of thermal fields in the solid substrate.