。Earliness of Mixing the fluid elements of a single flowing stream can mix with each other either early or late in their flow through the vessel Early mixing Uniform mixing Late mixing 00 00 Lots of mixing Flat- Same along LNo mixing Well-mixed of young and velocity the whole of young and region old fluid profile vessel old fluid Figure 11.4 Examples of early and of late mixing of fluid. 6 6 • Earliness of Mixing • the fluid elements of a single flowing stream can mix with each other either early or late in their flow through the vessel