SAHM - Simplification of one-dimensional hydraulic networks by automated processes evaluated on 1D/2D deterministic flood models

Roland Löwe, Steffen Davidsen, Cecilie Thrysøe, Karsten Arnbjerg-Nielsen

Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review

Abstract

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.
Original languageEnglish
Publication date2017
Number of pages5
Publication statusPublished - 2017
Event14th IWA/IAHR International Conference on Urban Drainage 2017 - Prague Congress Centre, Prague, Czech Republic
Duration: 10 Sep 201715 Sep 2017
http://www.icud2017.org/

Conference

Conference14th IWA/IAHR International Conference on Urban Drainage 2017
LocationPrague Congress Centre
Country/TerritoryCzech Republic
CityPrague
Period10/09/201715/09/2017
Internet address

Bibliographical note

Oral presentation + extended abstract presented at the 10th Int. Conference on Urban Drainage (ICUD), Sep 10th-15th in Prague, Czech Republic<br/>Access to the files must be campus only, as we have a paper submitted with the same / similar figures

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