Over the past ten years the application of two-dimensional (2D) numerical model techniques for simulation of hydraulic conditions in rivers, floodplains, reservoirs and estuaries has become much more commonplace. The numerical engines SRH-2D (USBR) and HEC-RAS 2D (USACE) specifically, have seen widespread application.
As the community has become more aware of the capabilities of these engines, additional applications and tools have continued to evolve. With more and more new, or less experienced users engaging in developing 2D hydraulic models, it is important to emphasize the different modeling approaches and methods that are used for different applications.
Therefore, this workshop will focus on 2D model development for the analysis of detailed hydraulics and sediment transport through structures, including bridges, culverts, weirs, and other natural instream structures (i.e., engineered log jams).
Best modeling practices for detailed hydraulic structure analyses will be illustrated using the SRH-2D engine with the Surface-water Modeling System (SMS) interface, but they apply to other model engines as well. Key topics will include mesh generation for representation of culvert and bridge structures, specification of model parameters for various structures, extracting hydraulic parameters for bridge scour evaluation, and evaluating sediment transport through structures. An overall review of best modeling practices and model review will also be included.