Transient liquid flow in plastic pipes

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

Povzetek

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.

Ključne besede

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

Podatki

Jezik:	Angleški jezik
Leto izida:	2020
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UL FS - Fakulteta za strojništvo
UDK:	519.61(045)
COBISS:	17045019
ISSN:	0039-2480
Matična publikacija:	Strojniški vestnik
Št. ogledov:	728
Št. prenosov:	319
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarni naslov:	Prehodni kapljevinski tok v plastičnih ceveh
Sekundarne ključne besede:	plastične cevi;nestabilno trenje;viskoelastičnost;numerične metode;
Vrsta dela (COBISS):	Članek v reviji
Strani:	str. 77-90, SI 11
Letnik:	ǂVol. ǂ66
Zvezek:	ǂno. ǂ2
Čas izdaje:	Feb. 2020
DOI:	10.5545/sv-jme.2019.6324
ID:	11415870