Effects of Inflow Condition on Hydraulic Jump
The particular aspect of the jump phenomenon considered in the paper concerns the condition of inflow, i.e., the state of flow development of the supercritical stream. Based on an unconventional...

Diffusion Solutions to Flows with Upstream Control
A diffusion solution to a simplified form of the St. Venant equations is used to predict the passage of a flood wave along the Clutha River in New Zealand. Hayami's diffusion...

Inflow Density Currents In TVA Reservoirs

Some Factors Influencing Required Reservoir Storage
The impact of streamflow variability and correlation and demand patterns on the required capacity of a water supply reservoir were studied. Inflow traces were generated by simple Markov...

De Saint-Venant Equations Experimentally Verified
The unsteady spatially varied flow equations (De Saint-Venant equations) are being solved by implicit finite differences with explicit description at the boundaries. Imposition of improper...

Optimal Design of Furrow Length of Surface Irrigation
The furrow length design of an irrigation system can be optimized by analyzing overall irrigation system cost when the infiltration intensity function of soils, advance function of inflow...

Control of Sediment Flow into Subsurface Drains
Sediment inflow into subsurface drains in noncohesive soils causes serious maintenance problems. An impervious hemispherical cover over a drain having inflow openings only at the top was...

Furrow Irrigation with Decreasing Inflow Rate
A mathematical model has been developed to provide the manner in which the inflow stream size at the upstream end of a furrow must be reduced stepwise according to the infiltration characteristics...

Surging in Laboratory Pipeline with Steady Inflow
Surges of head and discharge were studied experimentally in a laboratory pipeline which had check structures spaced at equal distances along the pipe. Surges developed when the downstream...

Selective Withdrawal from Density-Stratified Reservoirs
In lakes and reservoirs stable density stratification is caused primarily by the temperature variation with depth, and secondarily by a variable concentration of dissolved and suspended...

Effect of Intake Elevation and Operation on Water Temperature
A graphical temperature prediction method based on simplifying assumptions is used to demonstrate how intake elevation and operation at certain times of the year influence outflow water...

Water Consumption in the Lower Colorado River Valley
The average annual water consumption in the lower Colorado River valley between Davis Dam and Imperial Dam during the period 1950-1966 is about 1,200,000 acre-feet, the average of values...

Irrigation with Cut-Back Furrow Streams
Nonuniformity of water distribution in irrigated fields results from unequal intake-opportunity times along the run. The cut-back of inflow (as suggested by previous workers) allows a...

Computer Models for Reservoir Regulation
A stochastic linear programming model is structured for defining reservoir-operating policies which satisfy either single or multiple objectives. The discussion is limited to models for...

Horizontal Two-Dimensional Density Current
The flow in the region of entrainment for a two dimensional horizontal density current was examined and was compared with that of the hydraulic jump, it has been shown that the depth of...

Control Point in a Lateral Spillway Channel
To calculate the water surface profile in a lateral spillway channel, it is necessary to determine a control point. The control may be located downstream, with subcritical flow everywhere...

Hydraulics of Spatially Varied Pipe Flow
The flow profile in a gridiron drainage main tile where lateral inflows enter at constant intervals is studied in detail. Theoretical equations are derived for computing flow profiles....

Analysis of Surface Irrigation Application Efficiency
Precise analytical design of surface irrigation is not possible at the present time (as of 1967). Designs can be improved, however, if the interrelationships of design parameters of infiltration...

Energy Loss at Pipe Junctions
Theoretical equations can be used to predict the loss of energy at the junction of an inflowing lateral with a straight main pipe with satisfactory results for most uses. In most cases,...

Water Infiltration in Hawaiian Sugarcane Furrows
An infiltration equation that describes separately the effects of flow retardance from sugarcane growing in the furrow, the inflow rate, and the furrow slope, shape, and spacing as related...

 

 

 

 

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