A main subject of analysis is the characteristics of the particles that comprise the ash deposits. Two of the more important characteristics are the size and velocity of the particles as they leave the combustor. These two factors determine a variety of other properties, including deposition rate, particle dispersion, mass concentrations, and deposit structure.
Determining the characteristics of the particles that comprise the ash deposits is a crucial step in understanding the process of deposition. The many factors that determine the behavior of the ash deposits are all in some way dependent on the characteristics of the individual particles.