Water-Hammer Control in Pressurized Pipe Flow Using Dual (LDPE/LDPE) Inline Plastic Sub Short-Sections

  • Mounir TrabelsiEmail author
  • Ali Triki
Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)


A dual technique-based inline strategy was explored in this research to enhance the conventional technique skill with regard to the limitation of wave oscillation period spreading. Instead of the single short section employed by the latter technique, the former utilizes a couple of two sub-short sections made of low density polymeric material (LDPE). Numerical computations were performed using the Method of Characteristics for the discretization of 1-D unconventional water-hammer model embedding the Vitkovsky and Kelvin-Voigt formulations. The dual technique efficiency was considered for an operating event involving the onset of cavitating flow. Results evidenced the reliability of the proposed technique for mitigating excessive hydraulic-head drop and rise, and demonstrated that the (LDPE/HDPE) plastic sub-short section combination provided an acceptable trade-off between hydraulic-head attenuation and transient wave oscillation period spreading. Ultimately, a sensitivity analysis of the wave amplitude attenuation and wave period spreading to the employed plastic sub-short sections lengths and diameters was reported to estimate the near-optimal values of the sub-short section dimensions.


Cavitation Design Dual Inline Kelvin-Voigt LDPE Plastic material Method of characteristics Viscoelasticity Vitkovsky Water-Hammer 


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Authors and Affiliations

  1. 1.Department of Mechanics, National Engineering School of SfaxUniversity of SFAXSfaxTunisia
  2. 2.Research Unit: Mechanics, Modelling Energy and Materials M2EMNational Engineering School of Gabès, University of GabèsGabèsTunisia

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