Free surface flow modelling on a complex topography
The aim of this paper is to describe the different construction stages and the validation of a free surface flow model on a complex topography. This model is based on the two dimensional...
Two-Dimensional Modelling of Flow in the River Sava
On the river Sava near Ljubljana, a sports centre with a kayak racing channel was built in 1948. For the world championship in kayak-canoe racing in 1990 totally new racing channel had...
Flood Propagation on Mobile Beds under Mountainous Flow Conditions
An implicit finite-volume scheme is used to solve the shallow water equations under mountainous flow conditions. The algorithm is stable for sub- and supercritical flows and moving internal...
A comparison between computed and measured bed evolution in a river bend
A shallow-water scheme with a movable bed has been employed in order to check the reliability of computations related to the bed evolution when a substantially three-dimensional phenomenon...
Using Drop Structures for Stream Gaging
A long term monitoring program of 15 watersheds, for the purpose of studying channel response to erosion control measures being constructed in north Mississippi, is being conducted by...
Laboratory and Field Evaluation of Acoustic Velocity Meters
A project is currently underway to evaluate the performance of 27 acoustic flowmeters used at Hoover, Davis, and Parker Dams on the lower Colorado River. Field surveys and laboratory testing...
Experimental Design and Measurement Techniques for Investigation of Two-Phase Flow
Discussing the relevant hydraulical and inter-phasial processes of two-phase flow in open tanks the necessary requirements for set-up and operation of physical model studies are worked...
Real-Time Data Collection of Scour at Bridges
The record flood on the Mississippi River during the summer of 1993 provided a rare opportunity to collect data on scour of the streambed at bridges and to test data collection equipment...
Calibration of Movable Bed Model for Armant Area
The morphology of the Nile River, in Egypt, is undergoing continuous changes which causes navigation bottle-necks in some local reaches. About 200 km downstream Aswan, at Armant area,...
Optical Methods for Sediment-Laden Flows
A method of distinguishing between the signals from the liquid-seed particles and sediment particles, while using LDV in sediment-laden flows, is described. The validity of the method...
Estimation of Mean Velocity for Flow Under Ice Cover
Methods of estimating mean velocity in a vertical from point velocity measurements are compared for an ice-covered channel. The comparison is based on velocity profiles obtained from a...
Innovative Instrumentation for a Physical Model of River Ice Transport
Large physical models often require the use of innovative instrumentation and measurement techniques. Hydraulic models that attempt to simulate the effects of stationary ice covers put...
Acoustic-Doppler Velocimeter (ADV) for Laboratory Use
A remote-sensing, three-dimensional (3D) velocity sensor has been developed and tested for use in physical model facilities. The sensor is based on the Acoustic Doppler principle and measures...
Model-Prototype Conformance of a Submerged Vortex in the Intake of a Vertical Turbine Pump
Submerged vortices are commonly found in sump intakes of vertical turbine pumps. These vortices are known to cause increased vibration and at times degrade pump performance. Approach flow...
Design and Execution of Hydrodynamic Field Data Collection using Acoustic Doppler Current Profiling Equipment
Proposed major changes to the navigation channel depth in the Cape Fear River prompted an investigation of the existing hydrodynamics of the river system. The observed data are to be used...
Sensitivity Analysis of Bridge Equations
Computation of riverbed scour at the 482,000-plus bridges over water in the United States of America requires a significant level of hydraulic engineering effort. To do cost-effective,...
Brief Summary of National Bridge Scour Data Base
This paper briefly summarizes more than 470 measurements of local channel scour at bridge piers from 58 sites in 14 States. Relations between local scour and selected deterministic parameters...
Kent, Edward
In order to perform conservative scour analyses for coastal bridge sites it is necessary to develop realistic hydraulic simulations which provide worst case estimates of depth and velocity....
Is Bedform Development Chaotic?
A qualitative analysis of a model for the partially specified bedform development system is presented. The study rests on the use of technique of loop analysis and the connection of the...
Stability Analysis of Rayleigh-Benard Convection in the Presence of Side Walls
The onset of laminar axisymmetric Rayleigh-Benard convection is investigated for a low-Prandtl number liquid metal in a cylindrical container, in the presence of a vertical temperature...
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