Details
| Original language | English |
|---|---|
| Pages (from-to) | 569-585 |
| Number of pages | 17 |
| Journal | Journal of hydrology |
| Volume | 555 |
| Publication status | Published - 26 Oct 2017 |
Abstract
In urban water pipe networks, pipe leakage may lead to subsurface contamination or to reduced waste water treatment efficiency. The quantification of pipe leakage is challenging due to inaccessibility and unknown hydraulic properties of the soil. A novel physically-based model for three-dimensional numerical simulation of pipe leakage in variably saturated soil is presented. We describe the newly implemented coupling between the pipe flow simulator HYSTEM-EXTRAN and the groundwater flow simulator OpenGeoSys and its validation. We further describe a novel upscaling of leakage using transfer functions derived from numerical simulations. This upscaling enables the simulation of numerous pipe defects with the benefit of reduced computation times. Finally, we investigate the response of leakage to different time-dependent pipe flow events and conclude that larger pipe flow volume and duration lead to larger leakage while the peak position in time has a small effect on leakage.
Keywords
- HYSTEM-EXTRAN, Model coupling, Numerical model, OpenGeoSys, Pipe leakage
ASJC Scopus subject areas
- Environmental Science(all)
- Water Science and Technology
Sustainable Development Goals
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In: Journal of hydrology, Vol. 555, 26.10.2017, p. 569-585.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - A coupled approach for the three-dimensional simulation of pipe leakage in variably saturated soil
AU - Peche, Aaron
AU - Graf, Thomas
AU - Fuchs, Lothar
AU - Neuweiler, Insa
N1 - Funding information: We thank three anonymous reviewers for meaningful comments which have helped improve the quality of this manuscript. We also thank Peter Spönemann for guidance regarding the code coupling and for implementing the coupling to HYSTEM-EXTRAN. We further thank Robert Sämann, Arne Toewe and Yibo Zhu for technical support and discussion. The research is being conducted within the BMBF funded research project EVUS (EVUS – Real-Time Prediction of Pluvial Floods and Induced Water Contamination in Urban Areas) [BMBF, 03G0846A].
PY - 2017/10/26
Y1 - 2017/10/26
N2 - In urban water pipe networks, pipe leakage may lead to subsurface contamination or to reduced waste water treatment efficiency. The quantification of pipe leakage is challenging due to inaccessibility and unknown hydraulic properties of the soil. A novel physically-based model for three-dimensional numerical simulation of pipe leakage in variably saturated soil is presented. We describe the newly implemented coupling between the pipe flow simulator HYSTEM-EXTRAN and the groundwater flow simulator OpenGeoSys and its validation. We further describe a novel upscaling of leakage using transfer functions derived from numerical simulations. This upscaling enables the simulation of numerous pipe defects with the benefit of reduced computation times. Finally, we investigate the response of leakage to different time-dependent pipe flow events and conclude that larger pipe flow volume and duration lead to larger leakage while the peak position in time has a small effect on leakage.
AB - In urban water pipe networks, pipe leakage may lead to subsurface contamination or to reduced waste water treatment efficiency. The quantification of pipe leakage is challenging due to inaccessibility and unknown hydraulic properties of the soil. A novel physically-based model for three-dimensional numerical simulation of pipe leakage in variably saturated soil is presented. We describe the newly implemented coupling between the pipe flow simulator HYSTEM-EXTRAN and the groundwater flow simulator OpenGeoSys and its validation. We further describe a novel upscaling of leakage using transfer functions derived from numerical simulations. This upscaling enables the simulation of numerous pipe defects with the benefit of reduced computation times. Finally, we investigate the response of leakage to different time-dependent pipe flow events and conclude that larger pipe flow volume and duration lead to larger leakage while the peak position in time has a small effect on leakage.
KW - HYSTEM-EXTRAN
KW - Model coupling
KW - Numerical model
KW - OpenGeoSys
KW - Pipe leakage
UR - http://www.scopus.com/inward/record.url?scp=85032801024&partnerID=8YFLogxK
U2 - 10.1016/j.jhydrol.2017.10.050
DO - 10.1016/j.jhydrol.2017.10.050
M3 - Article
AN - SCOPUS:85032801024
VL - 555
SP - 569
EP - 585
JO - Journal of hydrology
JF - Journal of hydrology
SN - 0022-1694
ER -