Inner Harbor Navigation Canal Basin Velocity Analysis
ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
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Post Hurricane Katrina, the U.S. Army Engineer District, New Orleans MVN, constructed a comprehensive system of levees, gates, and drainage structures in the Inner Harbor Navigation Canal IHNC basin and the greater New Orleans, Louisiana, area. Two areas of modification are the connection of the IHNC and Lake Pontchartrain at Seabrook and in the Gulf Intracoastal Water Way GIWW just east of the Mississippi River Gulf Outlet MRGO. The structures allow for continued navigation, and the gate structures are designed to remain open during normal tidal conditions with the ability to close during surge events. A water control plan was developed by MVN to guide the closure of these structures based on water surface elevations at specific locations. The Adaptive Hydraulics AdH numerical modeling code was applied to investigate the hydrodynamic impacts associated with various operating rules for the structures, specifically those in and around the Seabrook and GIWW structures. The study is being performed to provide spatially varying velocity and water surface elevation data to determine the anticipated velocities in and around the constructed gate structures under different ambient conditions. MVN will use these data to determine forces that the structures will experience. The AdH-computed, hydrodynamic model results are analyzed to determine velocity magnitudes and water surface elevations in the area of the IHNC basin structures for several alternative conditions. Results reported include velocity and water surface elevation data at the structures and at other locations requested by the sponsor.
- Physical and Dynamic Oceanography
- Civil Engineering
- Fluid Mechanics