Analytical, numerical 1D and 3D water hammer investigations in a simple pipeline apparatus

Bergant, Anton (avtor), Rek, Zlatko (avtor), Urbanowicz, Kamil (avtor)

This paper deals with the analytical and numerical simulation of a water hammer in the reservoir-pipeline-valve (RPV) system. An analytical solution of the water hammer equations with unsteady friction term was derived for transient laminar pipe flow in a RPV system. For simulation of an arbitrary flow situation a number of one-dimensional (1D) numerical methods have been developed. The physically based method of characteristics proved to be computationally efficient and can handle complex boundary conditions. The accuracy of the 1D numerical model is increased by introducing terms that take into account 3D effects (example of an unsteady skin friction). The 3D model predicts these influences directly and represents an excellent tool for researching multidimensional properties of fluids (numerical laboratory). Calculation results based on 1D and 3D numerical models are in good agreement with results of measurements taking into account adequate prediction and modelling of influential physical parameters during laminar and low-Reynolds number turbulent water hammer events. Quantitative comparison analysis yields up to 2 % difference in maximum head at the valve and up to 5 % relative difference in pressure head drop at the midpoint of the pipeline monitored over the first four positive pressure pulses.

• Jezik: Angleški jezik
• Ključne besede: pipeline, water hammer, analytical solution, method of characteristics, computational fluid dynamics, unsteady skin friction
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2025
• Št. strani: Str. 149-156
• Številčenje: Vol. 71, no. 5/6
• PID: 20.500.12556/RUL-170657
• UDK: 621.22:621.64
• ISSN pri članku: 0039-2480
• DOI: 10.5545/sv-jme.2024.1179
• COBISS.SI-ID: 242283011
• Datum objave v RUL: 11.07.2025

Gradivo je del revije

• Naslov: Strojniški vestnik
• Skrajšan naslov: Stroj. vestn.
• Založnik: Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.
• ISSN: 0039-2480
• COBISS.SI-ID: 762116

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
• Naslov: Analitične, numerične 1D in 3D raziskave vodnega udara v enostavnem preizkusnem cevovodu
• Ključne besede: cevovod, vodni udar, analitična rešitev, metoda karakteristik, računalniška dinamika tekočin, nestalno stensko trenje

Projekti

• Financer: ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
• Številka projekta: P2-0162
• Naslov: Večfazni sistemi

• Financer: Minister of Science
• Program financ.: Regional Initiative of Excellence (RID) programme