Experimental Laboratory Model of a Fish Ladder Used in the Small Hydropower Plants

Fish Ladder Geometrical Sizes and Hydraulic Performances. Experimental Approach

“…6.d);  central openings in long pools, for MVS and MSO baffles. The flow rate can be adjusted by using a variable flow centrifugal pump in close circuit and by operating with the constant level reservoir (CLR) in an open circuit [12]. For each flow rate the levels in the centre of pools were measured.…”

“…The measurements of the hydraulic characteristics of different types of fish ladder, were carried out on the experimental setup in Figure 3. The testing facility has a hydraulic flume which is 2 m long, 0.24 m wide and 0.3 m high; a constant level reservoir (CLR, 0.1 m 3 capacity); a buffer tank (BT, 0.1 m 3 capacity); a radial pump (PP, Grundfos type UPS 15-50 CES 87); four valves (V1-V4, 1 inch diameter), and flexible pipes (1 inch diameter, except for the supply pipe of the pump which is 1-1/2 inch diameter) [12].…”

“…The baffles can have a submerged orifice or a slot, placed laterally or central, across the section ( Figure 6). More details regarding the manufacture of the flume are in reference [12]. a) b) At the downstream end of the flume there is a 90 V-notch (with a 100 mm wall height).…”