A Two-sided Model for Droplet Spreading and Evaporation on Semi-confined Geometries
نویسندگان
چکیده
In this study we present a numerical simulation for droplet spreading and evaporation on flat surfaces and in a semi-confined geometry. The model takes into account some of the coupled dynamics between the liquid and gas phases in an attempt to develop a coupled model for mass, energy and momentum transport. The dynamics of the liquid droplet are modelled using the lubrication framework and include the effects of gravity, surface tension and its gradients as well as intermolecular forces and topographical features. The incompressible Navier-stokes equations are used to model the dynamics of the gas phase along with the convection-conduction and convection-diffusion equations to describe energy and vapour transport respectively. The model is solved in COMSOL multiphysics using the finite element method and utilized deformable meshes to couple the solution of the lubrication equation to interface motion.
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