George, John F.
[VerfasserIn];
Pickering, Glenn A.
[VerfasserIn]
;
United States. Army. Corps of Engineers. St. Louis District.
[MitwirkendeR];
United States. Army. Corps of Engineers. Kansas City District.
[MitwirkendeR];
United States. Army. Corps of Engineers. Omaha District.
[MitwirkendeR]
Powerhouse Intake Gate Catapult Study, Big Bend Dam, South Dakota, and Stockton, Harry S. Truman, and Clarence Cannon Dams, Missouri: Hydraulic Model Investigation
Sie können Bookmarks mittels Listen verwalten, loggen Sie sich dafür bitte in Ihr SLUB Benutzerkonto ein.
Medientyp:
Bericht;
E-Book
Titel:
Powerhouse Intake Gate Catapult Study, Big Bend Dam, South Dakota, and Stockton, Harry S. Truman, and Clarence Cannon Dams, Missouri: Hydraulic Model Investigation
Beteiligte:
George, John F.
[VerfasserIn];
Pickering, Glenn A.
[VerfasserIn]
Erschienen:
U.S. Army Engineer Research and Development Center (ERDC); Hydraulics Laboratory (HL); Vicksburg, Mississippi, 1977
Anmerkungen:
Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
Beschreibung:
Source: https://erdc-library.erdc.dren.mil/jspui/ ; Tests were conducted to determine the range of gate openings and hydraulic conditions at which the service gates at Big Bend, Stockton, and Clarence Cannon powerhouses can be used for watering-up the scroll case area. The test data should also be applicable to Harry S. Truman powerhouse. Measurements of gate catapult heights, uplift forces, discharge coefficients, and pressures throughout the system were made for various gate openings and pool elevations. Although the model gate was suspended from a wire cable, cable stretch and tension were not simulated. Also, roller bearing and seal friction were somewhat greater in the model than in the prototype. Therefore, some caution should be exercised in application of the data to prototype simulations. For example, if any movement of the gate, however small , occurred in the model it should be assumed that the prototype gate will catapult; operation with these conditions should be avoided. The discharge coefficients that were measured for flow underneath the gate were about as expected. However, the discharge coefficients for the back-of-gate orifices were considerably higher than had been expected. The back-of-gate orifice is actually a submerged, vertical short tube. There is not a plentiful supply of data concerning discharge coefficients for a vertical orifice, but the limited amount of information that is available indicates that the coefficients determined in this study are not unreasonable. The pressures measured at various locations in the penstock, on the gate, and in the scroll case area were not indicative of a blow due to water hammer, although there was a pronounced change in pressures at the time when the scroll case became full and flow started up the gate slot. The pressures measured underneath the gate on the bottom structural member could not be directly related to the uplift force. Although the data could not be generalized for specific design criteria, the following conclusions can be used as ...