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Title: Air demand and conduit pressures, Stillhouse Hollow Dam, Lampasas River, Texas
Authors: United States. Army. Corps of Engineers. Fort Worth District.
Hart, E. Dale (Ellis Dale)
Keywords: Air demand
Wall roughness
Stillhouse Hollow Dam
Lampasas River
Air pressure
Publisher: Hydraulics Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Miscellaneous paper (U.S. Army Engineer Waterways Experiment Station) ; HL-88-5.
Description: Miscellaneous Paper
Abstract: Tests were conducted to provide data on prototype conduit air demand during high water discharges and to determine conduit losses at high Reynolds numbers (10⁷). The latter information was used to compute the conduit roughness coefficient f. Recorded data included water discharge, individual vent air demand, pressures at the air vent-water conduit interface, and conduit piezometric pressures. A value for the roughness coefficient was determined from the conduit head loss data and compared to values determined from plaster casts of the conduit wall. Some air vent velocities were found to exceed the recommended value given in Engineer Manual 1110-2-1602, "Hydraulic Design of Reservoir Outlet Works.'' However, no damage was noted in the conduit at the time of the tests. Periodic inspections of the conduit were recommended, especially following extended releases.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Miscellaneous Paper

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