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Water hammer simulation using simplified convolution-based unsteady friction model
ID Urbanowicz, Kamil (Avtor), ID Bergant, Anton (Avtor), ID Stosiak, Michal (Avtor), ID Deptuła, Adam (Avtor), ID Karpenko, Mykola (Avtor), ID Kubrak, Michał (Avtor), ID Kodura, Apoloniusz (Avtor)

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Izvleček
Omission of frequency-dependent hydraulic resistance (skin friction) during modelling of the water hammer phenomenon is unacceptable. This resistance plays a major role when the transient liquid flow occurs in rigid-walled pipes (steel, copper, etc.). In the literature, there are at least two different modelling approaches to skin friction. The first group consists of models based on instantaneous changes in local and convective velocity derivatives, and the second group are models based on the convolution integral and full history of the flow. To date, more popular models are those from the first group, but their use requires empirical coefficients. The second group is still undervalued, even if based on good theoretical foundations and does not require any empirical coefficients. This is undoubtedly related to the calculation complexity of the convolution integral. In this work, a new improved effective solution of this integral is further validated, which is characterised with the use of a simplified weighting function consisting of just two exponential terms. This approach speeds the numerical calculations of the basic flow parameters (pressure and velocity) significantly. Presented comparisons of calculations using the new procedure with experimental pressure runs show the usefulness of the proposed solution and prove that it maintains sufficient accuracy.

Jezik:Angleški jezik
Ključne besede:water hammer, hydraulic transients, unsteady friction, convolution-based model, numerical simulation
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Status publikacije:Objavljeno
Različica publikacije:Objavljena publikacija
Datum objave:01.10.2022
Leto izida:2022
Št. strani:20 str., art. 3151
Številčenje:Vol. 14, iss. 19
PID:20.500.12556/RUL-142025 Povezava se odpre v novem oknu
UDK:532:004.94
ISSN pri članku:2073-4441
DOI:10.3390/w14193151 Povezava se odpre v novem oknu
COBISS.SI-ID:125809923 Povezava se odpre v novem oknu
Datum objave v RUL:17.10.2022
Število ogledov:585
Število prenosov:96
Metapodatki:XML DC-XML DC-RDF
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Gradivo je del revije

Naslov:Water
Skrajšan naslov:Water
Založnik:Molecular Diversity Preservation International - MDPI
ISSN:2073-4441
COBISS.SI-ID:36731653 Povezava se odpre v novem oknu

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:vodni udar, neustaljeno stensko trenje, hidravlični prehodni pojavi, konvolucijski model, računske simulacije

Projekti

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:L2-1825
Naslov:Modeliranje zračnih mehurjev ujetih v hidravličnih cevnih sistemih

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P2-0162
Naslov:Večfazni sistemi

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