Special Hydraulic Problems Related to Coastal Louisiana Drainage Systems
The urbanized coastal areas of southeast Louisiana present unique problems for hydraulic engineers. These problems relate to the design of drainage systems serving leveed areas with flat...
Borden Field Data and Multivariate Geostatistics
A large-scale field experiment on natural gradient transport of solutes in groundwater was conducted in an unconfined sand aquifer in Borden, Ontario by extensive monitoring after the...
Model Study of New Madrid Pumping Station
The proposed pumping station on the New Madrid Floodway consisted of a draft tube type sump design (referred to as a formed suction inlet) to eliminate swirl and provide a more uniform...
Underwater Tunnel Inspection by Virginia Power Using a Submersible Robot
The Bath County Pumped Storage Station, has three large tunnels linking the upper and lower reservoirs. The 'Hydrover' submersible remotely operated vehicle (ROV)...
Localized Mixing for Improvement of Hydropower Releases from J. Percy Priest Reservoir
The J. Percy Priest Project, located on the Stones River near Nashville, TN, experienced low dissolved oxygen (DO) in the tailwaters during hydropower generation. Using commercially available...
Efficiency and Vibration Testing
To gather the necessary data to assure the most efficient and reliable operation of the system, Idaho Power Company implemented a plant testing program in 1988. The testing program consists...
Effect of Seepage in Cracks in Older Gravity Dams
One of the many problems encountered by dam designers is that of estimating uplift pressures in cracks within older concrete dams. As part of ongoing research, we are investigating this...
Hydropower and Fish Passage Impacts
The Pacific Northwest Electric Power Planning and Conservation Act (Act) of 1980 formed the Northwest Power Planning Council, which establishes criteria and sets goals for developing future...
In-Situ Shear Strength Testing
Dam stabilization requirements at the Upper Mechanicville Hydroelectric Project on the Hudson River in New York were significantly modified based on the results of an in-situ direct shear...
The Use of Interior Guide Tube in Cross Flow Turbines
The Cross Flow Turbine has the distinct advantage of lower initial and operating costs over other small scale turbines, but it is believed to lack somewhat in efficiency. In this study...
Characteristics of the Independent Turbine Testing Facility
The Independent Turbine Testing Facility (ITTF) located at the St. Anthony Falls Hydraulic Laboratory has recently undergone extensive upgrading, partially funded by a grant from the small...
Optimizing Joint Load Control for Hydroelectric Plants
This paper discusses a method to minimize water usage at a multi-turbine hydroelectric generating plant. At plants which do not spill water this optimization is directly converted to extra...
Runner Induced Penstock Vibrations
During the start up testing of the Sly Creek Power-house a severe penstock vibration was discovered at wicket gate openings above 65%. Subsequent testing revealed that the penstock vibration...
Development of High Specific Speed Pump-Turbines
The operational range of pump-turbines is continually increasing, especially in the direction of high specific speed installation. In this context, high specific speed refers to units...
Turbine Improvements through Model Testing, a Case Study
An air-flow, propeller type, rim-drive turbine is being manufactured to be used in sites with heads ranging from 12 to 28 feet. A laboratory turbine model study was conducted to optimize...
Field Efficiency Tests of a Large Pump-Turbine
The New York Power Authority's Blenheim-Gilboa Pumped Storage Project began commercial operation in 1973. In 1987, the Authority initiated a study of the existing pump/turbines...
Field Efficiency Testing of Hydroelectric Turbines
The wide variability of conditions encountered in field testing of turbines is illustrated by examining two case studies with widely different scenarios. One site involved field acceptance...
Turbine Efficiency Measurements by the Pressure-Time and the Current-Meter Method at Paugan
Paugan generating station was built in the 1920s. Although the generators were converted from 25 Hz to 60 Hz in the mid 1950s, the original runners were in place until recently when a...
Case Study in the Rehabilitation of a Pumped/Storage Installation - Salina Powerhouse Grand River Dam Authority
This paper presents a specific case study in the rehabilitation of a pump/turbine for the Grand River Dam Authority at its Salina plant. The study addresses problems such as cavitation...
Pumping System Permits Diversion of Water River Dam
For project construction at an existing Corps of Engineers' dam in New Mexico, where modifications to the existing outlet works were performed, a barge-mounted pumping system...
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