Surface Inflow of Light Water Into an Ambient Fluid: A Comparison between Laboratory Experiments and Theoretical Results

Dynamics of Reservoir of Medium Size
A Lagrangian one-dimensional model of the dynamics of a reservoir is presented. The model utilizes new formulas to describe the dynamics of both the inflow and outflow. In addition, recent...

Information Requirements for Improving Hydropower
A method of analysis is described with the objective of determining how (and whether) aerospace derived information system technology can effectively increase hydropower production. The...

Hydraulic Modeling of Mixing in Stratified Lakes
Criteria have been developed for laboratory modeling of stratified lake inflows and mechanical destratification flows. Density measurements and flow visualization were performed in two...

Predicting Estuarine Salinity from River Inflows
An analysis system is described that enables the second-order and higher nonlinear interactive effects to be estimated in the relationship between the input and output of nonlinear systems....

Algebraic Computation of Flow in Border Irrigation
Approximate advance and recession curves are obtained for a surface irrigation defined by the border characteristics — length, width, slope, Manning roughness, and infiltration parameters —...

Flow Factor Line Used in Storage Calculations
An article by the writer provided a graph called the Storage parameter curve witch could be used for arriving at a rough estimate of the attenuating...

Simplified Optimization of Water Supply System
A procedure is presented for optimization of large-scale water supply network systems. Pipeline costs and energy costs are considered in the optimization. The optimization problem is solved...

Design of Irrigation Runoff Recovery Systems
A technique is presented to design Irrigation Runoff Recovery Systems (IRRS) to recover runoff water from furrows and to increase irrigation efficiency. The method permits using a constant...

Infiltration-Inflow Analysis
Presentation of recommended guidelines for establishment of a systematic survey to determine the nature and extent of infiltration and inflow into a sewer system and some important factors...

Discs Reduce Manhole Infiltration
The Department of Public Works for New Castle County, Del., conducted a study of infiltration at their over 30,000 sanitary sewer manholes. The study indicated that up to 60% of their...

Wet-Wells Volumes for Multipump Systems
Fixed-speed electric drives of pumps drawing from a wet-well require a minimum time period between successive starts to avoid overheating. The wet-well volume, assuring that this time...

Timing and Sizing of Complex Water Resource Systems
Procedures and computational techniques have been developed to facilitate the planning and the optimal sizing, sequencing, and timing of multiple-purpose, multiple-facility water resource...

Unit-Response Method of Open-Channel Flow Routing
Unit-response flow routing is a technique of open-channel flow routing based on the unit hydrograph principle of lagging and superposition. The unit response is defined as the flow hydrograph...

Chance-Constrained Model of System of Reservoirs
In this paper chance-constrained programming is used to model a system of linked multipurpose reservoirs. The objective of the model is to determine an optimal operating policy for a given...

Review of Green's Functions for Linear Open Channel
A general solution is derived for the linearized shallow water equations describing flow in a wide channel with constant bed slope, with a known time- and space-dependent lateral inflow,...

Furrow Irrigation Criteria for Hawaiian Sugarcane
Empirical equations describing infiltration, advance, recession, and opportunity time for infiltration were developed by analysis of inflow-outflow-time measurements recorded during furrow...

Physical Model Study of Border-Strip Irrigation
A physical model of an irrigation border (bay) is constructed and tested. Equations are developed which describe the profile of the water advancing down the border, the rates of advance,...

Routing Storm Water through a Drainage System
The unsteady flow equations, describing the problem of routing storm water through storm drainage systems with lateral inflow, solved by the method of characteristics on digital computers....

Prediction of Irrigation Advance Function by Dimensional Analysis
An irrigation advance function relating dimensionless parameters for estimating advance distance during irrigation application is proposed. A dimensional analysis technique is utilized...

 

 

 

 

Return to search