Impulse Response Method for Pipeline Systems Equipped with Water Hammer Protection Devices
Publication: Journal of Hydraulic Engineering
Volume 134, Issue 7
Abstract
Surge protection devices, such as surge tanks and air chambers, have been modeled with the impulse response method for transient analysis of water distribution systems. The lumped inertia model and continuity equation are used to represent nonpipe hydraulic elements. Results of pressure or discharge variations obtained by using the impulse response method and the method of characteristics are in good agreement. The impulse response method provides total pressure and discharge along any pipeline segment by direct integration of the ratio of complex head or complex discharge to a complex downstream discharge, respectively. A modification is proposed so that transition between turbulent and laminar flows can be considered. The representation of hydraulic devices has been incorporated into the impedance matrix method, which was developed for heterogeneous and multilooped pipe network systems. The potential advantages of the proposed method over other conventional approaches were investigated by applying the proposed method to hypothetical pipe network systems.
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Acknowledgments
This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korean government (MOST) (No. KOSEFR01-2007-000-10808-0).
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 134 • Issue 7 • July 2008
Pages: 961 - 969
Copyright
© 2008 ASCE.
History
Received: Oct 9, 2006
Accepted: Oct 24, 2007
Published online: Jul 1, 2008
Published in print: Jul 2008
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