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Flow Through Fish Bypass Intakes

by Larry S. Slotta, Slotta Engineering Associates Inc, United States,
Jon R. Wollander, Slotta Engineering Associates Inc, United States,
Chung-Chu Teng, Slotta Engineering Associates Inc, United States,
Jalal Heydarpour, Slotta Engineering Associates Inc, United States,



Document Type: Proceeding Paper

Part of: Soil Properties Evaluation from Centrifugal Models and Field Performance

Abstract:

Hydraulic and computational fluid dynamic models were used to investigate the cause of the unequal intake flow distribution observed entering the three vertical intakes of the patented Eugene Water and Electric Board (EWEB) Leaburg Power Canal fish bypass facility. Additional hydraulic and computer studies were made to evaluate the performance of various alternatives which had been suggested for producing equal intake flows to the combining bypass manifold. The cause of the unequal inlet flow distribution was determined to be related to the combining flow back pressure often associated with manifold ducts. This paper presents flow results concerning structural modifications to have the three intakes perform uniformly.

Subject Headings: Water intakes | Hydraulic models | Flow distribution | Fish and fishery management | Mathematical models | Hydraulic structures | Fluid flow

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