One-Dimensional Model for Mud Flows
In this paper a transient, one-dimensional model for dynamic flood routing of mud flows is presented. The governing equations of mass and momentum conservation incorporate laminar flow...
Finite Element Analysis of Recirculating Flows
The primitive variable and stream-function-vorticity forms of depth averaged viscous fluid flow equations are compared via finite element computations on problems with the same meshes...
Explicit Finite Element Model for Long Water Waves
An explicit finite element model for free-surface flow is presented. The model is capable of simulating long waves of various orders of approximation in one and two space dimensions. The...
Measurement of Hydraulic Conductivity Variation
For a confined, sandy aquifer, the dependence of the horizontal hydraulic conductivity on the vertical coordinate has been measured using single-well tracer injection/recovery experiments....
Analytic Solution for Seepage from Saturated Soil Behind a Braced Wall
The locations of streamlines and equipotentials for two-dimensional flow in the vertical plane normal to a vertical retaining wall can be determined by various methods. Recent extension...
Analysis of Resonance in Pressurized Piping Systems Via a Microcomputer
In this paper a digital simulation technique for the analysis of resonance is presented that is appropriate for microcomputer applications. The model utilizes the transfer matrix method...
SWRRB.80: A Basin Scale Model for Microcomputers
The SWRRB (Simulator for Water Resources on Rural Basins) model was developed by the USDA Agricultural Research Service to simulate the daily stream flow, and sediment loads from agricultural...
Littoral Environment Observation Program
This paper presents a method for determining the longitudinal, transverse, and vertical dispersivities of a thick aquifer for a free convection tracer test using only measurements from...
Role of Small Computers in Two-Dimensional Flow Modeling
This paper describes the computational aspects and computer usage history of numerical simulations of horizontal, free surface, steady or unsteady two-dimensional flow fields. The focus...
Automated Analysis of High Accident Locations
Identification of high accident locations and associated accident causative factors as well as determination and evaluation of appropriate remedial measures at these sites are continuing...
APM Configuration Concepts and Network Design
The simpler networks, along with several of the more complex variations, include the following: Single-Lane Shuttle, Single-Lane Shuttle with Bypass, Double-Lane Shuttle, Single-Lane Loop,...
Transport by Cable: Possibilities and Limits
Cable systems offer a high degree of passenger safety; they do not cause pollution and can, in a very flexible way, be adapted to the local conditions. They can be operated as reversible,...
Dynamic Simulation of a DPM Auto Intercept System
This paper reports on the application of the UMTA Station Simulation Model (USS), which incorporates a dynamic path-choice algorithm, to model the diversion of motorists to a downtown...
The H-Bahn, a Fully Automatic People Mover System
The H-Bahn suspended cabin system is the contribution of the Siemens - DUEWAG joint development venture towards solving the problem of economical public transportation. This track-bound...
City of Pittsburgh Horizontal Elevator Experience: A Unique Application
The City of Pittsburgh is developing a unique and innovative application of horizontal elevator technology for use as downtown people-movers. The paper reviews the horizontal elevator...
Hydropower's Newest Generation
Higher energy prices and strong incentives from the federal government have caused hydropower developers to consider sites that just a few years ago were scoffed at as mere trickles. Intense...
Avoiding Contractor Disputes During Project Design
The New Jersey Transit Corporation is in the second phase of a billion dollar rebuilding program of its rail system. The first phase, which featured electrification and signal system replacement,...
Analysis of Cracking of I79 Bridge at Neville Island
A large crack was discovered to form in a girder of the I-79 Glenfield Bridge over the back channel of the Ohio River near Pittsburgh on January 28, 1977. A section of the girder containing...
Investigation of Catastrophic Failure of a Premium-Alloy Railroad Rail
In November 1983 an Amtrak train derailed at a speed of 72 mph (115 kph) at Woodlawn, Texas (in the vicinity of Marshall, Texas), resulting in four fatalities and twenty-four serious injuries....
Constitutive Theories for Solids with Defective Microstructure
The nonlinear mechanical response of solids is a macroscopic manifestation of the irreversible changes in its microstructure. The most common modes of the irreversible microstructural...
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