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Transient flow of liquid in plastic pipes
Urbanowicz, Kamil (Avtor), Duan, Huan-Feng (Avtor), Bergant, Anton (Avtor)

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Izvleček
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.

Jezik:Angleški jezik
Ključne besede:plastic pipes, viscoelasticity, water hammer, transient flow, method of characteristics, unsteady friction
Vrsta gradiva:Članek v reviji (dk_c)
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Leto izida:2020
Št. strani:str. 77-90
Številčenje:Vol. 66, no. 2
UDK:519.61(045)
ISSN pri članku:0039-2480
DOI:10.5545/sv-jme.2019.6324 Povezava se odpre v novem oknu
COBISS.SI-ID:17045019 Povezava se odpre v novem oknu
Število ogledov:153
Število prenosov:121
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Gradivo je del revije

Naslov:Strojniški vestnik
Skrajšan naslov:Stroj. vestn.
Založnik:Zveza strojnih inženirjev in tehnikov Slovenije [et al.], = Association of Mechanical Engineers and Technicians of Slovenia [et al.]
ISSN:0039-2480
COBISS.SI-ID:762116 Povezava se odpre v novem oknu

Sekundarni jezik

Jezik:Slovenski jezik
Naslov:Prehodni kapljevinski tok v plastičnih ceveh
Ključne besede:plastične cevi, nestabilno trenje, viskoelastičnost, numerične metode

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