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Modifications of control shaft, fort peck dam tunnel 4, Missouri river, Montana
Main control shaft incloses two concentric towers which are connected by six ports; flow-through controlled by cylinder gate; tests on 1:25 scale model indicated application of offset in inner tower, in conjunction with two 2.5 ft diam air vents through outer shaft, which eliminated cavitation in port areas above offset; vortex action in discharge ports was reduced.
Modifications of control shaft, fort peck dam tunnel 4, Missouri river, Montana
Main control shaft incloses two concentric towers which are connected by six ports; flow-through controlled by cylinder gate; tests on 1:25 scale model indicated application of offset in inner tower, in conjunction with two 2.5 ft diam air vents through outer shaft, which eliminated cavitation in port areas above offset; vortex action in discharge ports was reduced.
Modifications of control shaft, fort peck dam tunnel 4, Missouri river, Montana
US Waterways Experiment Station -- Tech Report
Melsheimer, E.S. (author)
1959
25 pages
58 Supp p
Article (Journal)
English
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