Further investigation on water-hammer control inline strategy in water-supply systems

Research Article| September 27 2017 Further investigation on water-hammer control inline strategy in water-supply systems Ali Triki Ali Triki 1Research Unit: Mechanics, Modelling Energy and Materials M2EM, National Engineering School of Gabes, University of Gabes, Zrig 6029, Tunisia E-mail: [email protected] Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2018) 67 (1): 30–43. https://doi.org/10.2166/aqua.2017.073 Article history Received: July 11 2016 Accepted: July 27 2017 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Cite Icon Cite Permissions Search Site Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsThis Journal Search Advanced Search Citation Ali Triki; Further investigation on water-hammer control inline strategy in water-supply systems. Journal of Water Supply: Research and Technology-Aqua 1 February 2018; 67 (1): 30–43. doi: https://doi.org/10.2166/aqua.2017.073 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Abstract This paper revisited the inline re-design strategy used for water-hammer control into an existing steel-piping water supply system to further promote a comprehensive exploration of the entire design driven parameters set, including pressure-head, circumferential-stress and radial-strain behaviors. This strategy consists of replacing a short-section of the transient sensitive region of the original piping system by another made of polymeric pipe-wall material. The 1-D unconventional water-hammer model embedding the Vitkovsky and the Kelvin–Voigt formulations was adopted to describe the flow behavior and solved by the Method of Characteristics (MOC). The model was used to investigate two critical scenarios, including water-hammer up- and down-surge events. The effectiveness of the proposed strategy was evaluated for the high- or low-density polyethylene (HDPE or LDPE) material used for the replaced short-section pipe-wall. Results suggested that the utilized strategy could be successfully employed to amortize pressure-head and circumferential-stress rise and drop. Moreover, the observed amortization rates were found to be strongly dependent upon the short-section material and size. However, two interesting characteristics of the control strategy at hand, not previously reported, also emerged from this study, including the amplification of the radial-strain peaks (and ridges) along with the spread-out of the wave oscillation period. column-separation, Kelvin-Voigt formulation, LDPE/HDPE pipe-wall material, method of characteristics, Vitkovsky formulation, water-hammer control © IWA Publishing 2018 You do not currently have access to this content.

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