CFD Modelling of a Highly Viscous Liquid Film on Rotating Vertically Disk

Hydrodinamic behaviour of the liquid film in rotating vertically disk reactor, that is partially immersed in a liquid bath, was investigated using computational fluid dynamics (CFD). A model for the fully free boundary problem of the rotating disk, that drags a thin film out of the bath is set up. The depth of the disc used 35% of the disk center to the liquid surface. Simulations were carried out using the volume of fluid method and compared with empirical corelations published in literature. The dominant factors that determine the film thickness are identified as a function of angular posisition, radius, rotating speed, viscosity and surface tension. The liquid film variation in the surface tension, and the liquid film dragged into the liquid are particularly investigated.