Abstract: Fixed-cone valves are generally used to regulate flow under medium to high head conditions because of their ability to safely and efficiently pass the flow. By design, fixed-cone valves, also known as Howell–Bunger valves, ...

Abstract: A study was completed to compare flow parameters over a standard ogee-crested spillway using a physical model, numerical model, and existing literature. The physical model was constructed of Plexiglas and placed in a test ...

Abstract: Data obtained from two physical models were compared to the results obtained from numerical model investigations of two ogee-crested spillways. In 2001, Savage and Johnson investigated ogee-crested spillways without the ...

Abstract: Many flow-meter applications require accurate flow measurement (0.5% of actual flow or better), whereas other applications accept less-accurate flow measurements. Some applications attempt to minimize head loss, whereas a ...

Abstract: This study examines the dangerous countercurrent that can form at the downstream face of a low-head dam for certain flow conditions, utilizing computational fluid dynamics software and laboratory observations. The objective ...

Abstract: Fixed-cone valves (FCVs) are practical devices used to regulate flow at dams having medium to high heads. These valves are designed to safely reduce the flow energy by redirecting the pipe flow into a free-discharging ...

Abstract: Detailed

Abstract: The writers examine possible remediation options to mitigate the dangers found at low-head dams, using computational fluid dynamics and physical model tests. The objective was to identify an option that could be relatively ...

Abstract: Parshall flume tests were conducted to determine the sensitivity on indicated flow rate resulting from improperly located staff gauges and differing entrance conditions to the flume. An acrylic 2 ft (61 cm) Parshall flume ...