Title page for ETD etd-11012011-163026

Type of Document Master's Thesis
Author Clifton, Nathan Dwayne
Author's Email Address nathan.d.clifton@usace.army.mil
URN etd-11012011-163026
Degree Master of Science
Department Civil and Environmental Engineering
Advisory Committee
Advisor Name Title
William H. McAnally Committee Chair
James L. Martin Committee Co-Chair
Jairo N. Diaz-Ramirez Committee Member
  • EFDC
  • sediment transport
  • numerical modeling
Date of Defense 2011-10-24
Availability unrestricted

The main objective of this research was to create a two dimensional and three dimensional Environmental Fluid Dynamics Code (EFDC) model using Aberdeen Pool of the Tennessee-Tombigbee Waterway for the purpose of determining the differences in their ability to address sediment transport. These objectives were reached in the results with comparisons of water levels, sediment concentrations, shear stress, and bed change. The models produced very similar results for the majority of the sediment transport throughout both models with the overall trend being deposition except in the upper limits of the Tombigbee River. The main differences between the two models are produced from the 2D model being depth averaged and the 3D being able to transport sediment vertically. The results show the 2D model tends to erode less and deposit more whereas the 3D model tends to follow the same pattern except for less deposition with more erosion.

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