Representation of the vaporization behavior of turbulent polydisperse sprays by 'equivalent' monodisperse sprays

SUMMARY Concept of using an equivalent monodisperse spray to represent the vapori- zation behavior of polydisperse sprays has been examined by numerically solving two turbulent vaporizing sprays. One involves the injection of freon-11 in a still environment, whereas the other is a methanol spray in a still but hot environment. The use of three dlfferent mean sizes, namely, Sauter mean diam- eter, volume median diameter, and surface-area mean diameter, has been investi- gated. Results indicate a good degree of correlation between the polydisperse results. The surface-area mean diameter does not provide as good a correlation as the other two mean diameters. 0 0 M M spray and its equivalent monodisperse sprays represented by the volume medlan I diameter and the Sauter mean diameter, the former giving slightly better w INTROOUCT ION This work is aimed at examining the concept of an "equivalent" monodls- perse spray with some suitable mean drop size. Purpose is to explore if an 'equivalentn monodisperse spray can adequately represent the behavior of a given polydisperse spray, and if it can, what is the droplet size of this