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Mike 21

Along with different analytical tools, Coastal Tech applies Mike21 advanced numerical modeling techniques for studies of shoreline processes, beach nourishment designs, sedimentation managements of inlets, and wave agitation studies. Some modeling examples are highlighted.

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St. Lucie County, FL - South Beach Restoration.

The modeled St. Lucie County shoreline represents a sandy beach littered with hardbottom surface within the surfzone, and highly eroding areas. Along with storm-profile model LITPROF and line-model LITLINE, a Mike21 two-dimensional integrated model - dynamically coupling spectral wave and hydrodynamic modules - has been applied to simulate shoreline processes, beach morphology and predict beach nourishment performance. The Figures show simulation snapshots of waves and wave-induced currents along the St. Lucie County shoreline during the 2004 Hurricane Frances.

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Indian River County, FL – Sector 3 Beach Restoration

Similar to St. Lucie County, the littoral shoreline of Indian River County is characterized by intermittently buried and exposed hardbottom surfaces in the surfzone. Along with storm-profile model LITPROF and line-model LITLINE, a Mike21 two-dimensional integrated model - dynamically coupling spectral wave, hydrodynamic, sediment transport and morphology modules - has been applied to simulate shoreline processes, beach morphology and predict beach nourishment performance. Together with the model bathymetry and computational grids, the Figures show simulation snapshots of waves, wave-induced currents and sand transports along the Indian River County shoreline during the 2004 Hurricane Frances.

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Sargent Beach, TX - Beach and Dune Restoration

The modeled Sargent Beach area represents a consolidated shore of stiff clay in a low-lying barrier island of Matagorda County, Texas. A Mike21 two-dimensional integrated model dynamically coupling spectral wave, hydrodynamic, sediment transport and morphology modules has been applied to simulate shoreline processes, and predict recreational beach nourishment performance on clay substrate. Together with model bathymetry and computational grids, the Figures show simulation snapshots of waves, and wave-induced currents along the Sargent Beach shoreline during the 2008 Hurricane Ike.

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Salt Ponds Inlet, VA - Sedimentation Management

Since dredging of the inlet in 1979 connecting the Salt Ponds harbor area to Chesapeake Bay, the Salt Ponds Inlet has been facing continuous shoaling. A Mike21 two-dimensional integrated model dynamically coupling spectral wave, hydrodynamic, sediment transport and morphology modules has been applied to simulate inlet hydrodynamics and shoaling, and optimize jetty configuration for minimization of sedimentation within the inlet. The Figures show the modeled area with computational grids, and simulation snapshots of waves, currents and sand transports during the 2003 Hurricane Isabel.

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Salt Ponds Inlet, VA - Wave Agitation Studies

Agitation of harbors excited by waves is a major problem in coastal, and port and harbor engineering. Phase-resolving Boussinesq model is an appropriate tool to study this phenomenon. Together with the bathymetry in fine square computational grid, the Figure shows a simulation snapshot of wave action in the Salt Ponds Inlet area.

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