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

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 conference › Conference abstract for conference › Research › peer-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 language	English
Publication date	2017
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 http://www.icud2017.org/

Conference

Conference	14th IWA/IAHR International Conference on Urban Drainage 2017
Location	Prague Congress Centre
Country/Territory	Czech Republic
City	Prague
Period	10/09/2017 → 15/09/2017
Internet address	http://www.icud2017.org/

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

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.",

author = "Roland L{\"o}we and Steffen Davidsen and Cecilie Thrys{\o}e and Karsten Arnbjerg-Nielsen",

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; 14th IWA/IAHR International Conference on Urban Drainage 2017, ICUD 2017 ; Conference date: 10-09-2017 Through 15-09-2017",

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SAHM - Simplification of one-dimensional hydraulic networks by automated processes evaluated on 1D/2D deterministic flood models. / Löwe, Roland; Davidsen, Steffen; Thrysøe, Cecilie et al.
2017. Abstract from 14th IWA/IAHR International Conference on Urban Drainage 2017, Prague, Czech Republic.

Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

TY - ABST

T1 - SAHM - Simplification of one-dimensional hydraulic networks by automated processes evaluated on 1D/2D deterministic flood models

AU - Löwe, Roland

AU - Davidsen, Steffen

AU - Thrysøe, Cecilie

AU - Arnbjerg-Nielsen, Karsten

N1 - 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

PY - 2017

Y1 - 2017

N2 - 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.

AB - 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.

M3 - Conference abstract for conference

T2 - 14th IWA/IAHR International Conference on Urban Drainage 2017

Y2 - 10 September 2017 through 15 September 2017

ER -

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

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