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Diffusion Wave Overland Flow Module
This paper documents the diffusion-wave overland flow module contained in the FORTRAN-callable routine OVERLAND. Subjects covered include the theoretical background, model formulation,...

The Calculation of Flushing Flows for Gravel and Cobble Bed Rivers
Flushing flows are needed to remove fines and sand from a gravel or cobble bed river. A natural stream will have periodic high flows adequate for flushing of fines and sand, but the hydraulic...

Flow Field Near an Inland Navigation Tow
As a vessel moves through a body of water, disturbances are created in the form of altered water levels such as waves or drawdown and altered flow fields such as increased velocities and...

Prototype Measurements of Flows Induced by Navigation Tows
Present projections of growth of commerical navigation traffic indicate that annual tonnage per tow and/or number of tows will continue to increase through the foreseeable future. In order...

The Equivalence of Path and Node Methods for Water Distribution Network Analysis
This paper deals with the equivalence between commonly employed methods, path and node adjustment methods, for analyzing water distribution networks. The basic equations for steady-state...

Hydraulic Analysis for the Shot Tower Subway Station Beneath the Jones Falls
The objective of the hydraulic analysis is the formulation of a strategy to safely accommodate the construction of the Shot Tower Metro Station beneath the existing Jones Falls. The hydraulic...

Secondary-Flow Correction for Depth-Averaged Numerical Models
An empirical equation is proposed for the production and transport of secondary (streamwise) vorticity induced by lateral curvature in shallow water. The streamwise vorticity creates a...

Application of Weakly Compressible Flow Method to 2-D Open Channel Flows
The depth averaged equations for open channel flows are shown to be similar to that of the weakly compressible flows. The finite volume scheme developed for weakly compressible flows has...

Numerical Computation of Free Surface Weir Flow Using Isoparametric Finite Elements
Numerical computation of flows with a free surface boundary involves three problems in one: the internal flow problem, location of the free surface and the actual flow rate. The development...

Model Study to Design a Small Intake
A 1:4 scale model was used to design the make-up water intake structure for Burrillville Combined-Cycle Power Plant, Ocean State Power Project. The objective of the study was to assure...

Characteristics of Flow Pressure Pulsation and Similitude Law of Model
As described in this paper, the characteristics of flow pressure pulsation and similitude law of model are derived from experiments on some prototype dam and serial scales models....

Numerical Modeling of Irregular Hydraulic Jumps
In its simplest form a hydraulic jump characterized by an abrupt increase in the water surface elevation from a depth less than the critical depth, D_c,...

Solving Turbulent Flows with Finite Elements
A finite element computer code using the q - r turbulence model is applied to turbulent flow under a sluice gate. The addition and slow removal of artificial diffusion enhances convergence....

Hydraulic Geometry of Mississippi Hill Streams
Hydraulic geometry data based on field and office studies are presented for a series of streams in the Black Creek and Long Creek watersheds in the upland hills of Central and Northern...

Bank Erosion During the 1988-Flood in the Rumoi River
Observations of the bank erosion were performed in the Rumoi River after the flood in August, 1988. It was found from the detailed research that the pattern of the flood was an important...

Flow Separation Around a Solitary Dike: Eddy Viscosity and Mesh Considerations
The hydronamic model RMA-2V has been verified on a variety of global circulation studies. These studies rarely involved separated flow patterns around sudden expansions or contractions....

Longitudinal Channel Response Due to In-Stream Mining
This paper describes the analysis procedure developed for the Arizona Department of Transportation for the estimation of short-term longitudinal channel response due to in-stream mining....

Experimental Study on the Hydraulic Characteristic and Trapping Efficiency of a Vortex Tube Sediment Trap
In this paper, an expression of water extractor ratio of a vortex tube has been obtained according to the principle of energy conservation and transformation; based on the feature of sediment...

3-D Free Surface Flow Modeling by Efficient Finite Element Method
3-D free surface flows in highly irregular boundary configurations are among the most difficult natural phenomena to be simulated by mathematical modeling. Not only the problems of accuracy,...

Flow Transitions Around a Single Large Bed Element
A qualitative description of the characteristics of supercritical-to-subcritical flow transitions due to the presence of a single large bed element (LBE) in a laboratory flume is presented....

 

 

 

 

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