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https://hdl.handle.net/11681/13333
Title: | Water quality outlet works prototype tests, Warm Springs Dam, Dry Creek, Russian River Basin, Sonoma County, California |
Authors: | United States. Army. Corps of Engineers. Sacramento District Fagerburg, Timothy L. Price, Richard E. Howington, Stacy E. |
Keywords: | Air discharge Cavitation Blending Dynamic pressures Butterfly valves Strain gages Torque Vibrations Warm Springs Dam Water temperature Wet well Russian River basin Sonoma County, California Water quality Water quality management |
Publisher: | Hydraulics Laboratory (U.S.) Engineer Research and Development Center (U.S.) |
Series/Report no.: | Technical report (U.S. Army Engineer Waterways Experiment Station) ; HL-89-4. |
Description: | Technical Report Abstract: Prototype tests were conducted to make a comprehensive evaluation of the operating conditions of the project. Prototype measurements included butterfly valve leaf pressure fluctuations, butterfly valve leaf vibrations, intake conduit pressures, wet well pressures, elbow piezometer differential pressures, air vent, air flow, and wet well water temperatures. Data were recorded on analog magnetic tape and played back on oscillograph charts to verify the recording. Results of the data reduction indicate that the air flow in the quality control (QC) gate air vent reached peak flows at two different QC gate openings (5 and 90 percent), similar to results obtained in other field testing. The elbow piezometer pressures from the intake conduits and the wet well appeared to be adequate for use in discharge determination. However, it is recommended that a more precise calibration be performed and permanent instrumentation be installed for monitoring discharges. Surges in the wet well were found to be at a maximum (6.14 ft) during single-valve operations with small butterfly valve openings and large QC gate openings. These butterfly valve and QC gate combinations created unsubmerged flow at the butterfly valve. The most turbulent pressures resulted from the unsubmerged flow at the butterfly valve, creating low pressures (-17.82 ft) and increasing the potential for the occurrence of cavitation in the valve area. Multilevel intake port operation (blending) is considered to be possible as well as potentially practical in the operation of the structure. There was general agreement between the observed and predicted release temperatures. |
Rights: | Approved for public release; distribution is unlimited. |
URI: | http://hdl.handle.net/11681/13333 |
Appears in Collections: | Technical Report |
Files in This Item:
File | Description | Size | Format | |
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TR-HL-89-4.pdf | 10.09 MB | Adobe PDF | View/Open |