Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/6598
Title: Transient wave-blockage interaction and extended blockage detection in elastic water pipelines
Authors: Duan, HF
Lee, PJ
Ghidaoui, MS
Tuck, J
Keywords: Water pipelines
Transients
Extended blockage
Wave-blockage interaction
Frequency shift
Wave perturbation analysis
Issue Date: Apr-2014
Publisher: Academic Press
Source: Journal of fluids and structures, Apr. 2014, v. 46, p. 2-16 How to cite?
Journal: Journal of fluids and structures 
Abstract: Extended partial blockages are common in pressurized water pipelines and can result in the wastage of energy, the reduction in system carrying capacity and the increased potential for contamination. This paper investigates the transient wave-blockage interaction and its application to extended blockage detection in pipelines, where blockage-induced changes to the system resonant frequencies are observed. The frequency shifting is first inspected and explained in this study through wave perturbation analysis, providing a theoretical confirmation for the result that unlike discrete blockages, extended blockages cause resonant frequency shifts in the system. Furthermore, an analytical expression is derived for the relationship between the blockage properties and the resonant frequency shifts and is used to detect the blockages in this study. The obtained results are validated through both numerical applications and laboratory experiments, where the accuracy and efficiency of the developed method for extended blockage detection are tested.
URI: http://hdl.handle.net/10397/6598
ISSN: 0889-9746
EISSN: 1095-8622
DOI: 10.1016/j.jfluidstructs.2013.12.002
Rights: © 2013 Elsevier Ltd.All rights reserved.
NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Fluids and Structures. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Fluids and Structures, vol. 46 (Apr 2014), DOI: 10.1016/j.jfluidstructs.2013.12.002
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