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Experimental and Numerical Investigations of Multi-leaks Detection in a Nonhomogenous Pipeline System

  • Research Article-Mechanical Engineering
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Abstract

This paper focuses on an experimental procedure to localize multiple leaks in a nonhomogenous hydraulic pipeline system made up of three portions of two different materials. Then, an experimental setup originally designed for water hammer study was modified and adapted for leak detection using transients. Two leaks were made in some particular locations in the main pipe and a transient event through a rapid closure of a downstream valve was created. To mimic common practical issues that may be encountered, three main leakage cases were considered; a single leak, two simultaneous leaks and two successive leaks (i.e., one leak that appears followed by an abrupt appearance of a second leak after a period of time). Leaks were experimentally localized by analyzing obtained pressure signals in the excitation point. Results were validated through comparison with numerical ones obtained using the method of characteristics. Additionally, a novel formula to localize the second leak in a successive leaks scenario was presented and its accuracy was confirmed for our test case. Experimental techniques presented in this paper and performed on a test bench at lab scale can be extended and tested on large scale hydraulic pipeline systems.

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Acknowledgment

The support of the staff of the Energetic Laboratory at the Higher Institute of Technological Studies of Gafsa (Tunisia), that allowed conducting experimental tests, is highly acknowledged.

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  1. National Engineering School of Sfax, Laboratory of Applied Fluids Mechanics Process and Environment Engineering, University of Sfax, 3038, Sfax, Tunisia

    Lazhar Ayed & Zahreddine Hafsi

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  1. Lazhar Ayed
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  2. Zahreddine Hafsi
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Correspondence to Lazhar Ayed.

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Ayed, L., Hafsi, Z. Experimental and Numerical Investigations of Multi-leaks Detection in a Nonhomogenous Pipeline System. Arab J Sci Eng 46, 7729–7739 (2021). https://doi.org/10.1007/s13369-021-05491-0

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  • DOI: https://doi.org/10.1007/s13369-021-05491-0

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