*5.4.6 Mixing-controlled combustion (9.0° ASI to end of injection)*

At about 9.0° *ASI*, the combustion has entirely become mixing-controlled and the appearance of the jet as used to hypothesize the conceptual model is fully established at about 10.0° *ASI*. At this point, the sizes of soot particles remain small from upstream edge where the last portions of the premixed burns, but the concentration increases downstream. The concentration is more at the center of vortex head which becomes very prominent with large soot particles as signified by color codes. This last image is ordinarily taken as a representative of the final jet development. It is typical of the observations made of the remaining mixing-controlled combustion of injected fuel.
