Numerical Modeling of Hydraulic Transient in Plastic Pipes

B. Bahrar; H. Samri; E. H. Achouyab; K. Gueraoui

doi:10.15866/ireme.v10i1.7514

Numerical Modeling of Hydraulic Transient in Plastic Pipes

B. Bahrar⁽¹⁾, H. Samri⁽²⁾, E. H. Achouyab^(3*), K. Gueraoui⁽⁴⁾

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DOI: https://doi.org/10.15866/ireme.v10i1.7514

Abstract

The main objective claimed by this study is the numerical modeling of hydraulic transients in plastic pipe, typically made of polyethylene. It allows to investigate, the effect of the viscoelasticity of such material, on water hammer phenomena by taking into account the unsteady part of friction term. The approach to the problem is based on the theory of unsteady one dimensional flow in a cylindrical straight pipe. The set partial differential equations to be solved are obtained using conservation laws and behavior for the fluid and the pipe wall. These equations are associated, for the two media, with the constitutive relationship compatibility of interfaces on velocities and stresses. A global digital processing is achieved using the method of characteristics. The results obtained are in good agreement with those found in the literature.
Copyright © 2016 Praise Worthy Prize - All rights reserved.

Keywords

Hydraulic Transient; Plastic Pipes; Polyethylene; Water-Hammer; Methods of Characteristics; Numerical Processing

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