Implementation of Structures in the CMS:Part 1, Rubble Mound.

摘要

This Coastal and Hydraulics Engineering Technical Note (CHETN) describes the mathematical formulation, numerical implementation, and input specifications of rubble mound structures in the Coastal Modeling System (CMS) operated through the Surface-water Modeling System (SMS). A coastal application at Dana Point Harbor, California is provided to illustrate the implementation procedure and demonstrate the model capability. Rubble mound is typically built as breakwaters, jetties, revetments, and groins for protecting harbors, navigation channels, shoreline, and for controlling flow and sediment transport. The design of rubble mound structures often consists of a core of small to medium size rock or riprap covered with larger rock or riprap to armor against wave energy (Figure 1). In coastal modeling, rubble mound structures are often represented as solid structures, impermeable to both flow and sediment transport. However, some designs with larger riprap in the core may result in sufficient structure porosity to allow flow and fine sediment through and to provide significant sediment storage. Since rubble mound structures are a significant component of hydrodynamic and sediment transport controls in the coastal zone, it is important that the CMS simulates their effects. The CMS, developed by the Coastal Inlets Research Program (CIRP), is an integrated suite of numerical models for simulating water surface elevation, current, waves, sediment transport, and morphology change in coastal and inlet applications. It consists of a hydrodynamic and sediment transport model, CMS-Flow, and a spectral wave model, CMS-Wave (Buttolph et al. 2006; Sanchez et al. 2011a; Sanchez et al. 2011b; Lin et al. 2008).