Field Tests of a Lewiston Pump-Generating Unit
An extensive field test program was undertaken on a Lewiston Pump-Generating Plant (LPGP) unit at the Niagara Power Project, owned and operated by the New York Power Authority. The objective...
Hydraulic Design and Development of Propeller Replacement Runner for R. H. Saunders
This paper outlines the hydraulic design for the R.H. Saunders replacement runner. The six-bladed propeller runner was numerically optimized based on 3-dimensional flow simulation. After...
Through-Flow Analysis for Rockfill Dam Stability Evaluations
Existing rockfill dams may have spillways that are not adequate to pass the current probable maximum flood (PMF), having been designed prior to the publication of the latest Hydrometeorological...
Frazil Ice Problems and Solutions at Hydro-Power Intakes
Active and passive frazil ice effects on hydroelectric plant intake design and operation are described and references are provided. The most frequently encountered problems and the basic...
R. H. Saunders GS?Propeller Turbine Runner Replacement Project Outline and Model Development
Ontario Hydro's operating philosophy is to operate all of its facilities in an optimum manner. The basic rationale for upgrading this plant is to maximize its energy potential...
The Twin Vortex Draft Tube Surge
Recent studies conducted at Colorado State University using a model of the 700-MW turbines at the U.S. Bureau of Reclamation's Grand Coulee Third Powerplant indicate that...
Performance Analysis of Multipath Acoustic Flowmeters Under Various Hydraulic Conditions
Multipath, crossed plane acoustic flowmeters are being increasingly used for hydroelectric turbine efficiency measurement both for acceptance testing and efficiency mapping of units in...
Waterpower 91?Laboratory Investigation of Syphon Intakes
The Federal Department of Energy, Mines and Resources (Canada) has funded four separate investigations of syphon hydro technology. These study phases, which were carried out by Acres Hydraulic...
Decision Support for Colorado River Operations
The United States Bureau of Reclamation (Reclamation) uses a simulation model known as the 24-month Study Model for planning monthly and seasonal operations for the Colorado River Basin....
Pressure-Time Method Using Modern Practices
Over the past twenty years, Hydro-Quebec has modernized the pressure-time method of flow measurement, a method which is generally economical but sometimes difficult to apply. Starting...
Application of Personal Computers to Field Flow Measurement
Flow measurements are often necessary to verify the performance of hydro turbines for regulatory, contractual, or engineering purposes. Historically, several methods utilizing various...
Herbicides in Streams: Midwestern United States
Results from a 2-year study of 149 streams geographically distributed across the corn-producing region of 10 midwestern States show that detectable concentrations of herbicides persist...
Overall Resistance Parameter of Flow Arising in the Catchment-Area of a Reservoir in Steep Land
On a small reservoir catchment in mountains, the basin storage S(t) during a flood was expressed in terms of the basin discharge Q(t) and the time-varying storage parameters K(t) and P(t),...
Effects of Soil Layering on Infiltration
The effect of sloping soil layers on infiltration depends on the textural composition of both layers at the interface, as well as the slope of the interface. The contractions of flow caused...
Ground-Water Recharge from Streamflow Data, NW Florida
Annual base flows of streams draining Okaloosa County and adjacent areas in northwest Florida were determined through hydrograph separation and correlation techniques for purposes of evaluating...
Estimating Upland Recharge in the Yucca Mountain Area
Field and modeling studies were conducted recently for the Fortymile Canyon watershed and the Rock Valley area near the site of the proposed high-level nuclear waste repository at Yucca...
Modeling Tertiary Unit Performance in Large Irrigation Systems
Large irrigation systems constructed in the Asian region, deliver water over a wide area with varied agroclimatic conditions and cropping patterns. In order to evaluate the performance...
Flow Measurement in Irrigation Practice: State-of-the-Art
State-of-the-art flow metering developments for irrigation are reviewed. Selected older methods are updated with recent improvements. These include orifice meters, venturi meters, critical-flow...
A Decision Support System for Prediction of Crop Yield, Evapotranspiration, and Irrigation Management
Computer simulation models have been developed which predict growth, development, and yield for grain legumes. These models can be applied for yield prediction as well as water management...
An Analytical Technique of Flow Rate Into Perforated Draintubes
The flow rate into a draintube in a saturated soil media depends on numerous characteristics such as the hole size, the number and spacing of holes, the drain size and depth. Based on...
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