Air Demand and Conduit Pressures Stillhouse Hollow Dam, Lampasas River, Texas
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 (10 to the 7th power). 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1988
- Accession Number
- ADA199358
Entities
People
- E. D. Hart