Imagine doing a study where you test what size fuel droplet best follows the induction path. They found it to be in the microns. Obviously the size of the fuel droplet is affected by the speed at which the air is travelling since it carries more weight so therefore it has a harder time turning corners.....If it doesn't turn corners it will coalesce making larger droplets that burn as well and require heat from the flame front to convert them to a burnable state.
Dry Flow vs Wet Flow....
