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Impact of pipes networks simplification on water hammer phenomenon

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Abstract

Simplification of water supply networks is an indispensible design step to make the original network easier to be analysed. The impact of networks’ simplification on water hammer phenomenon is investigated. This study uses two loops network with different diameters, thicknesses, and roughness coefficients. The network is fed from a boundary head reservoir and loaded by either distributed or concentrated boundary water demands. According to both hydraulic and hydraulic plus water quality equivalence, three simplification levels are performed. The effect of demands’ concentration on the transient flow is checked. The transient flow is initialized by either concentrated or distributed boundary demands which are suddenly shut-off or released. WHAMO software is used for simulation. All scenarios showed that both hydraulic equivalence and demands’ concentration simplifications increase the transient pressure and flow rate. However, hydraulic plus water quality equivalence simplification produces an adverse effect. Therefore, simplifications of the networks should be done carefully. Also, it was found that pump shut-off gives the same trend of valve shut-off or release.

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References

  • Abd El-Gawad S M 1994 Water hammer analysis for the pipeline Ahmed Hamdi Tunnel, Abu-Radis. Eng. Res. J. 6: 40–54

  • Ali N A, Mohamed H I, El-Darder M E and Mohame A A 2010 Analysis of transient flow phenomenon in pressurized pipes system and methods of protection. J. Eng. Sci. Assiut University 38(2): 323–342

  • Al-Khomairi A M 2005 Use of the steady-state orifice equation in the computation of transient flow through pipe leaks. The Arabian J. Sci. Eng. 30(IB): 33–45

  • Batterton S 2006 Water hammer: An analysis of plumbing systems, intrusion, and pump operation. Thesis submitted to the Faculty of The Virginia Polytechnic Institute and State Univ. in partial fulfillment of the requirements for the degree of M. Sc. in Civil Eng., pp. 147

  • Chaudhry H M and Yevjevich V 1981 Closed-Conduit flow. Water Resources Publications, Littleton, U.S.A

  • Fitzgerald R and Van Blaricum V L 1998 Water hammer and mass oscillation (WHAMO) 3.0 user’s manual

  • Fouzi A and Ali F 2001 Comparative study of the phenomenon of propagation of elastic waves in conduits. Proceed. of The World Congress on Eng., Vol. III, London, U.K

  • Jönnsson L 1999 Hydraulic transient as a monitoring device. XXVII IAHR Congress, Graz, Austria

  • Jung B S, Boulos P F and Wood D J 2007 Pitfalls of water distribution model skeletonization for surge analysis. J. AWWA 99(12): 87–98

  • Jung B S, Boulos P F and Wood D J 2009 Effect of pressure-sensitive demand on surge analysis. J. AWWA 101(4): 100–111

  • Kwon H J 2007 Computer simulations of transient flow in a real city water distribution system, KSCE. J. Civil Eng. 11(1): 43–49

  • Mohamed H I 2003 Parametric study for the water hammer phenomenon in pipelines. 1st Int. Conf. of Civil Eng. Sci. ICCESI, Vol. 2, pp. 1–12, Assiut, Egypt

  • Mohamed H I and Ahmed S S 2011 Effect of simplifying the water supply pipe networks on water quality simulation. Inter. Confer. for Water, Energy Envir., Sharijah, UAE, pp. 41–46

  • Raczynski A, Kirkpatrick W, Rehnstrom D, Boulos P and Lansey K 2008 Developing hydraulic and water quality equivalent systems. Proceed. of the 10th Annual Water Distr. Systems Conf., WDSA2008, Krugar National Park, South Africa

  • Ramos H, Covas D, Borga A and Loureiro A 2004 A surge damping analysis in pipe systems: Modeling and experiments. 42(4): 413–425

  • Samani H M V and Khayatzadeh A 2002 Transient flow in pipe networks. J. Hyd. Res. 40(5): 637–644

  • Simpson A R and Wu Z Y 1997 Computer modelling of hydraulic transient in pipe networks and associated design criteria. MODSIM97, International Congress on Modelling and Simulation, Modelling and Simulation Society of Australia, Hobart, Tasmania, Australia

  • Stephenson D 2002 Simple guide for design of air vessels for water hammer protection of pumping lines. J. Hyd. Eng. 128(8): 792–797

  • Yang K 2001 Practical method to prevent liquid column separation. J. Hyd. Eng. 127(7): 620–623

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Authors and Affiliations

  1. Civil Engineering Department, Assiut University, Assiut, 71516, Egypt

    ALI A M GAD & HASSAN I MOHAMMED

  2. Civil and Environmental Engineering Department, Majmaah University, Al Majmaah, 11952, Saudi Arabia

    HASSAN I MOHAMMED

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  1. ALI A M GAD
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  2. HASSAN I MOHAMMED
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Correspondence to HASSAN I MOHAMMED.

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M GAD, A.A., MOHAMMED, H.I. Impact of pipes networks simplification on water hammer phenomenon. Sadhana 39, 1227–1244 (2014). https://doi.org/10.1007/s12046-014-0260-7

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  • DOI: https://doi.org/10.1007/s12046-014-0260-7

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