Seite - 1382 - in Book of Full Papers - Symposium Hydro Engineering

Fig. 24 Energy heights scheme in the mixing zone [3] A lowering of the water level pressure occurs, together with suction back into the draft tube. This momentum and consequently the influence on the ejector’s effectiveness in increasing drop height can be illustrated in two component parts also, according to influence of the ramp gradient. z=zH+zV [13] Conditions at confluence zone The design of the draft tube discharge or mixing zone is of great significance for the effectiveness of the ejector. The research project results in a special surface design at bed level optimizing the head increasing effect. Fig. 25 Section through ejector ramp with the deepened mixing area [3] 1382