This paper explored and compared the effectiveness of the inline and the branching redesign strategies used to control water-hammer surges initiated into existing steel piping systems. The piping system is handled, at its transient sensitive regions, by replacing an inline, or adding a branching, short-section made of high- or low-density polyethylene (HDPE or LDPE) pipe-wall materials. The Ramos model was used to describe the transient flow, along with the method of characteristics implemented for numerical computations. The comparison of the numerical solution with experimental data available from the literature and alternative numerical solution evidenced that the proposed model could reproduce satisfactorily the magnitude and the phase shift of pressure head evolution. Further, the robustness of the proposed protection procedures was tested with regard to water-hammer up- and down-surge mechanisms, taken separately. Results demonstrated that both utilized techniques provided a useful tool to soften both water-hammer up- and down-surges. Additionally, the amortization of pressure-head-rise and -drop was sensitive to the short-section material and size. Moreover, the branching strategy illustrated several enhancements to the inline one in terms of period spread-out limitation, while providing acceptable pressure-head damping.
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April 2019
Research-Article
Investigation on Redesigning Strategies for Water-Hammer Control in Pressurized-Piping Systems
Mohamed Fersi,
Mohamed Fersi
Department of Mechanics,
National Engineering School of Sfax,
University of Sfax,
B.P. 1173,
Sfax 3038, Tunisia;
National Engineering School of Sfax,
University of Sfax,
B.P. 1173,
Sfax 3038, Tunisia;
Mechanics, Modeling, Energy and
Materials M2EM,
Department of Mechanics,
National Engineering School of Gabès,
University of Gabès,
Zrig, Gabès 6029, Tunisia
Materials M2EM,
Department of Mechanics,
National Engineering School of Gabès,
University of Gabès,
Zrig, Gabès 6029, Tunisia
Search for other works by this author on:
Ali Triki
Ali Triki
Mechanics, Modeling, Energy and
Materials M2EM,
Department of Mechanics,
National Engineering School of Gabès,
University of Gabès,
Gabès
e-mail: ali.triki@enis.rnu.tn
Materials M2EM,
Department of Mechanics,
National Engineering School of Gabès,
University of Gabès,
Zrig
,Gabès
6029
, Tunisiae-mail: ali.triki@enis.rnu.tn
Search for other works by this author on:
Mohamed Fersi
Department of Mechanics,
National Engineering School of Sfax,
University of Sfax,
B.P. 1173,
Sfax 3038, Tunisia;
National Engineering School of Sfax,
University of Sfax,
B.P. 1173,
Sfax 3038, Tunisia;
Mechanics, Modeling, Energy and
Materials M2EM,
Department of Mechanics,
National Engineering School of Gabès,
University of Gabès,
Zrig, Gabès 6029, Tunisia
Materials M2EM,
Department of Mechanics,
National Engineering School of Gabès,
University of Gabès,
Zrig, Gabès 6029, Tunisia
Ali Triki
Mechanics, Modeling, Energy and
Materials M2EM,
Department of Mechanics,
National Engineering School of Gabès,
University of Gabès,
Gabès
e-mail: ali.triki@enis.rnu.tn
Materials M2EM,
Department of Mechanics,
National Engineering School of Gabès,
University of Gabès,
Zrig
,Gabès
6029
, Tunisiae-mail: ali.triki@enis.rnu.tn
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received June 5, 2017; final manuscript received April 28, 2018; published online February 21, 2019. Assoc. Editor: Tomomichi Nakamura.
J. Pressure Vessel Technol. Apr 2019, 141(2): 021301 (10 pages)
Published Online: February 21, 2019
Article history
Received:
June 5, 2017
Revised:
April 28, 2018
Citation
Fersi, M., and Triki, A. (February 21, 2019). "Investigation on Redesigning Strategies for Water-Hammer Control in Pressurized-Piping Systems." ASME. J. Pressure Vessel Technol. April 2019; 141(2): 021301. https://doi.org/10.1115/1.4040136
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