Kamil Urbanowicz (Author), Huan-Feng Duan (Author), Anton Bergant (Author)

Abstract

Nowadays, plastic pipes play a key role in fluid conveyance, for example, in urban water supply systems. Dynamic analysis of designed water pipe networks requires the use of numerical methods that allow for solving basic equations that describe transient flows occurring in plastic pipes. In this paper, the main equations were formulated with pressure (p) and velocity (v) as the principal variables. A novel simplified retarded strain solution is used to properly model the pipe-wall viscoelasticity effect during transient flow process. Unsteady friction is calculated with the use of a filtered weighting function (with three exponential terms). The proposed numerical method enables the efficient modelling of transient flow in plastic pressurized pipes. Extensive simulations are performed and compared with experimental results known from three different European research centres (London, Cassino, and Lyon), with the aim of demonstrating the impacts of plastic pipe properties and frequency-dependent hydraulic resistance on transient pipe flow oscillations. The effectiveness of the proposed method for determining the creep functions of plastic pipes is also examined and discussed.

Keywords

plastic pipes;viscoelasticity;water hammer;transient flow;method of characteristics;unsteady friction;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FS - Faculty of Mechanical Engineering
UDC: 519.61(045)
COBISS: 17045019 Link will open in a new window
ISSN: 0039-2480
Parent publication: Strojniški vestnik
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Other data

Secondary language: Slovenian
Secondary title: Prehodni kapljevinski tok v plastičnih ceveh
Secondary keywords: plastične cevi;nestabilno trenje;viskoelastičnost;numerične metode;
Type (COBISS): Article
Pages: str. 77-90, SI 11
Volume: ǂVol. ǂ66
Issue: ǂno. ǂ2
Chronology: Feb. 2020
DOI: 10.5545/sv-jme.2019.6324
ID: 11415870
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