ABSTRACT
A spray is generally considered as a system of drops immersed in a gaseous continuous phase. In addition to representing the drop size distribution with a frequency plot, it is also informative to use a cumulative distribution representation. While it is common for typical instruments to report binned representation of drop size distributions, if drop size distribution data can be adequately represented by a continuous function, it stands to reason that the entire distribution can be determined with a few parameters. The upper-limit distribution function assumes a realistic spray of finite minimum and maximum drop sizes, but it involves difficult integration that requires the use of log-probability paper. In many calculations of mass transfer and flow processes, it is convenient to work only with mean or average diameters instead of the complete drop size distribution. The term dispersion is sometimes used as an alternative to distribution to express the range of drop sizes in a spray.
