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Coping with Strong Cross Flows at Pump Intakes

Author(s): Tatsuaki Nakato; Markus Krutten

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Keywords: Pump Intake; Pump Sump; Pump Throat; Cross Flows; VelocityDistributions; Flow-Straightening Devices; Trashracks; ADV

Abstract: In order to improve nonuniform pump-approach flow distributions under strong crossflow conditions, various flow-turning vanes were tested using a 1: 10-scale rectangular pump-sump model. The area-averaged mean velocity ratio between the channel flow and pump intake flow was varied from 1. 31 to 5. 28. Simple vanes installed at the intake entrance were found to rectify nonuniform pump-approach flow distributions induced by flow separation. These vanes can be incorporated as part of the trashrack design.


Year: 1999

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