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Civil and Environmental Engineering

University of Texas at Arlington

Simulation

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Developing A Framework To Optimize The Operations Of An Intermodal Underground Freight Transportation Terminal Using Simulation, Fatemeh Rezaeifar Aug 2018

Developing A Framework To Optimize The Operations Of An Intermodal Underground Freight Transportation Terminal Using Simulation, Fatemeh Rezaeifar

Civil Engineering Dissertations

According to the U.S. Department of Transportation (USDOT), by 2040, nearly 30,000 miles of our busiest highways will be clogged daily and it is important to increase the capacity of our transportation system. Construction of intermodal underground freight transportation (UFT) systems for freight movement through underground pipelines or tunnels, can increase the capacity of the existing shipping network. The intermodal terminal is a major component of the UFT’s innovative infrastructure project. Increasing demand for container transportation systems in terminals will raise the risk of terminal congestion and delivery delay due to the increase in freight transportation system bottlenecks (traffic jams …


Heat And Water Transport In Soils And Across The Soil-Atmosphere Interface: 2. Numerical Analysis, Jan Vanderborght, Thomas Fetzer, Klaus Mosthaf, Kathleen M. Smits, Rainer Helmig Feb 2017

Heat And Water Transport In Soils And Across The Soil-Atmosphere Interface: 2. Numerical Analysis, Jan Vanderborght, Thomas Fetzer, Klaus Mosthaf, Kathleen M. Smits, Rainer Helmig

Civil Engineering Faculty Publications

In an accompanying paper, we presented an overview of a wide variety of modeling concepts, varying in complexity, used to describe evaporation from soil. Using theoretical analyses, we explained the simplifications and parameterizations in the different approaches. In this paper, we numerically evaluate the consequences of these simplifications and parameterizations. Two sets of simulations were performed. The first set investigates lateral variations in vertical fluxes, which emerge from both homogeneous and heterogeneous porous media, and their importance to capturing evaporation behavior. When evaporation decreases from parts of the heterogeneous soil surface, lateral flow and transport processes in the free flow …