A coupled approach for the three-dimensional simulation of pipe leakage in variably saturated soil

verfasst von

Aaron Peche, Thomas Graf, Lothar Fuchs, Insa Neuweiler

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.

Organisationseinheit(en)

Institut für Strömungsmechanik und Umweltphysik im Bauwesen

Externe Organisation(en)

itwh – Institut für technisch-wissenschaftliche Hydrologie GmbH

Typ

Artikel

Journal

Journal of hydrology

Band

555

Seiten

569-585

Anzahl der Seiten

17

ISSN

0022-1694

Publikationsdatum

26.10.2017

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Gewässerkunde und -technologie

Ziele für nachhaltige Entwicklung

SDG 11 – Nachhaltige Städte und Gemeinschaften

Elektronische Version(en)

https://doi.org/10.1016/j.jhydrol.2017.10.050 (Zugang: Geschlossen)