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Sumardiono, S; Fischer, J.
(2007): Molecular simulations of droplet evaporation by heat transfer
MICROFLUID NANOFLUID. 2007; 3(2): 127-140. FullText FullText_BOKU

Abstract:: Droplet evaporation by heat transfer is investigated by molecular dynamics simulations for a pure Lennard-Jones fluid. Two different initial conditions are treated: (1) a droplet surrounded by its vapor in equilibrium, (2) a cold droplet surrounded by warm vapor. In both cases heat is transferred from a heat bath. Results are the numbers of droplet molecules N (d) and density, drift velocity, and temperature profiles as functions of time. For the small droplets considered N (d) depends on the definition of a droplet molecule. The density profiles as function of time show a transition from a droplet with liquid-vapor interface to a cluster of interfacial type and finally to the gas state. The temperature at a given time is nearly constant within the droplets or clusters but strong gradients occur in the gas. In case of evaporation of a cold droplet surrounded by warm vapor we observed initially cooling down of the droplet corresponding to pressure jump evaporation and thereafter slower evaporation because of lower initial state vapor density.
Authors BOKU Wien:: Fischer Johann
Find related publications in this database (Keywords): droplet; evaporation; molecular dynamics; density profiles; temperature profiles