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.


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    Title :

    Modifications of control shaft, fort peck dam tunnel 4, Missouri river, Montana


    Additional title:

    US Waterways Experiment Station -- Tech Report


    Contributors:


    Publication date :

    1959


    Size :

    25 pages


    Remarks:

    58 Supp p


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :