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Waves at Navigation Structures

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Technical Report

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U.S. Army Engineer Research and Development Center Coastal Inlets Research Program Vicksburg United States

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This work unit develops, validates, and implements advanced numerical wave modeling technology which provides the USACE with more reliable and accurate estimates of waves and wave processes in navigation projects, coastal inlets, channels, ports and harbors, and coastal beaches. It conducts basic research on the coupling of wave and flow models to calculate waves and currents for engineering studies of channels, jetties, and morphology change. The work unit develops calculation capabilities for short- and long-term simulations of coastal inlet hydrodynamics and navigation processes, and implements these technologies for practical applications. It continually upgrades the Coastal Modeling System CMS wave models CMS-Wave, a phase-averaged spectral wave model, and BOUSS-2D, a Boussinesq type nonlinear wave model. These models are required for shallow reefs, porous structures, variable structure roughness, infra-gravity waves, runupovertopping, and for evaluating wave asymmetry. Using these models in-tandem, functional performance of navigation projects can be evaluated in calculations of flow and sediment transport in USACE projects Figure 1.

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