We present an algorithm for automated simplification of 1D pipe network models. The impact of the simplifications on the flooding simulated by coupled 1D-2D models is evaluated in an Australian case study. Significant reductions of the simulation time of the coupled model are achieved by reducing the 1D network model. The simplifications lead to an underestimation of flooded area because interaction points between network and surface are removed and because water is transported downstream faster. These effects can be mitigated by maintaining nodes in flood-prone areas in the simplification and by adjusting pipe roughness to increase transport times.
|Number of pages||5|
|Publication status||Published - 2017|
|Event||14th IWA/IAHR International Conference on Urban Drainage 2017 - Prague Congress Centre, Prague, Czech Republic|
Duration: 10 Sept 2017 → 15 Sept 2017
|Conference||14th IWA/IAHR International Conference on Urban Drainage 2017|
|Location||Prague Congress Centre|
|Period||10/09/2017 → 15/09/2017|