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Pcswmm vs epa swmm2/13/2023 ![]() ![]() The third method uses a complete quasi-2D model to represent the river and floodplain conveyance. ![]() Side connections can be tedious to construct, so a routine using FME software was developed to automatically create the orifice side connections. The second method uses the technique of representing the river channel with a 1D approach and making orifice side connections with the quasi-2D floodplain mesh. Care needs to be taken in the model construction to avoid double accounting of the channel conveyance and overestimation of the channel roughness. ![]() The first method is the standard method for constructing a 1D–2D model with PCSWMM (quasi-2D mesh with direct connections towards the 1D conveyance network). Three methods for quasi-2D model setup of a SWMM5 project are explored with the PCSWMM 5.6 software using real project data from a hydraulic study of the Birse River in the town of Court in Switzerland. ![]()
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