화학공학소재연구정보센터
International Journal of Heat and Mass Transfer, Vol.40, No.8, 1753-1772, 1997
A 3-D Eulerian-Lagrangian Model of Dispersed Flow Film Boiling Including a Mechanistic Description of the Droplet Spectrum Evolution .1. The Thermal-Hydraulic Model
A hybrid Eulerian-Lagrangian model is developed to analyze dispersed how film boiling in a vertical straight tube under typical reflooding conditions. The effect of the liquid phase on the vapour field, which is established in a two-dimensional grid, is calculated by tracking the three-dimensional trajectories of a large number of sample droplets. The detailed description of droplet hydrodynamics includes droplet size distribution, initial inertia, different mechanisms of break-up and interaction of the droplets with the wall, and the forces due to the temperature and velocity fields of the continuous phase.