Seite - 191 - in Book of Full Papers - Symposium Hydro Engineering

floor was realized. This change in the share of settling can be attributed to the vortex flow caused by submerge vanes. These vortices flow move sediments settled on the floor and direct them toward the flushing orifice. As shown in Figures 12 and 13, by holding constant the total efficiency, different modes of arrangements could change the orifice efficiency and the floor efficiency. With these changes, for each R mode, when the orifice efficiency increased compared to its corresponding no-vane mode, the floor efficiency decreased compared to its corresponding no-vane mode. (a) (a) (b) (b) (c) (c) 191