Droplet Deposition Simulation with the Consideration of Evaporation and Viscosity Change

Abstract

Numerical simulation model of free surface, with the consideration of water evaporation and viscosity change, is proposed to investigate droplet deposition phenomena of inkjet. The model includes moisture convection-diffusion analysis, and estimation of viscosity-change due to the evaporation. The behavior of droplet deposition on printing media is simulated, and the thickening on the surface of the droplet is reproduced. Behaviors of a sessile droplet are simulated with the consideration of evaporation and viscosity change, and the calculations show good agreement with the experimental observations. However, the simulation needs a lot of assumptions and parameter adjustments, and the consideration has made clear the problems of the model.