NDLI: Local and Global Leak Laws : The Relationship Between Pressure and Leakage for a Single Leak and for a District with Leaks

Content Provider	Springer Nature Link
Author	Ferrante, Marco Meniconi, Silvia Brune, Bru
Copyright Year	2014
Abstract	The relationship between the functioning conditions of pipe systems and the leakage, or leak law, can be used at two different scales. At a local scale, i.e. for a single leak, it is derived from the classical orifice equation and, basing on experimental data, is modified to take into account all the relevant parameters it depends on (e.g., leak shape, pipe material and thickness, …). At a global scale, for a whole district or a part of a pressurized pipe system with several leaks, the same relationship is often used, basing on the assumption that the combination of local leak laws produces a similar global leak law.In this paper the effects of the spatial variation of the leak law parameters at the local scale on the leak law at a global scale are analyzed. Two leak laws derived from the orifice equation, the power law and the linear law, are considered. Results suggest that the global leak law exponent is larger than the corresponding mean local leak law exponent since it takes into account the spatial variability of the quantities affecting leakage.
Starting Page	3761
Ending Page	3782
Page Count	22
File Format	PDF
ISSN	09204741
Journal	Water Resources Management
Volume Number	28
Issue Number	11
e-ISSN	15731650
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-06-14
Publisher Institution	European Water Resources Association (EWRA)
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Leakage Water distribution systems Leak law Orifice law Hydrogeology Hydrology/Water Resources Geotechnical Engineering & Applied Earth Sciences Atmospheric Sciences Civil Engineering Environment
Content Type	Text
Resource Type	Article
Subject	Water Science and Technology Civil and Structural Engineering

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