Water hammer with non-equilibrium gas release
Samo za registrovane korisnike
2018
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Water hammer transient with gaseous cavitation in a pipe shows that the amplitude of the first pressure surge, caused by the closure of the fast valve, is approximate to the Joukowsky pressure rise in liquid, while subsequent pressure surges are strongly influenced by the presence of air in the mixture with liquid water. These conditions are described and numerically simulated with the homogeneous two-phase flow model and a non-equilibrium model of air mass transfer between dispersed air bubbles and continuous liquid water. It is found that the generation of air bubbles is intensive when the rarefaction wave decreases pressure below the pressure of gas saturation in water for the first time after the Joukowsky pressure peak, while, later on, the mass transfer rate, due to air degassing and absorption, is much smaller. A numerically predicted pressure transient is validated by the comparison with available measured data, and an excellent agreement is achieved.
Ključne reči:
Water hammer / Numerical simulation / Gaseous cavitationIzvor:
International Journal of Pressure Vessels and Piping, 2018, 165, 229-240Izdavač:
- Elsevier Sci Ltd, Oxford
Finansiranje / projekti:
- Napredne analitičke, numeričke i metode analize primenjene mehanike fluida i kompleksnih sistema (RS-MESTD-Basic Research (BR or ON)-174014)
DOI: 10.1016/j.ijpvp.2018.07.009
ISSN: 0308-0161
WoS: 000445286400024
Scopus: 2-s2.0-85049748508
Kolekcije
Institucija/grupa
Mašinski fakultetTY - JOUR AU - Ivljanin, Bojan AU - Stevanović, Vladimir AU - Gajić, Aleksandar PY - 2018 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2787 AB - Water hammer transient with gaseous cavitation in a pipe shows that the amplitude of the first pressure surge, caused by the closure of the fast valve, is approximate to the Joukowsky pressure rise in liquid, while subsequent pressure surges are strongly influenced by the presence of air in the mixture with liquid water. These conditions are described and numerically simulated with the homogeneous two-phase flow model and a non-equilibrium model of air mass transfer between dispersed air bubbles and continuous liquid water. It is found that the generation of air bubbles is intensive when the rarefaction wave decreases pressure below the pressure of gas saturation in water for the first time after the Joukowsky pressure peak, while, later on, the mass transfer rate, due to air degassing and absorption, is much smaller. A numerically predicted pressure transient is validated by the comparison with available measured data, and an excellent agreement is achieved. PB - Elsevier Sci Ltd, Oxford T2 - International Journal of Pressure Vessels and Piping T1 - Water hammer with non-equilibrium gas release EP - 240 SP - 229 VL - 165 DO - 10.1016/j.ijpvp.2018.07.009 ER -
@article{ author = "Ivljanin, Bojan and Stevanović, Vladimir and Gajić, Aleksandar", year = "2018", abstract = "Water hammer transient with gaseous cavitation in a pipe shows that the amplitude of the first pressure surge, caused by the closure of the fast valve, is approximate to the Joukowsky pressure rise in liquid, while subsequent pressure surges are strongly influenced by the presence of air in the mixture with liquid water. These conditions are described and numerically simulated with the homogeneous two-phase flow model and a non-equilibrium model of air mass transfer between dispersed air bubbles and continuous liquid water. It is found that the generation of air bubbles is intensive when the rarefaction wave decreases pressure below the pressure of gas saturation in water for the first time after the Joukowsky pressure peak, while, later on, the mass transfer rate, due to air degassing and absorption, is much smaller. A numerically predicted pressure transient is validated by the comparison with available measured data, and an excellent agreement is achieved.", publisher = "Elsevier Sci Ltd, Oxford", journal = "International Journal of Pressure Vessels and Piping", title = "Water hammer with non-equilibrium gas release", pages = "240-229", volume = "165", doi = "10.1016/j.ijpvp.2018.07.009" }
Ivljanin, B., Stevanović, V.,& Gajić, A.. (2018). Water hammer with non-equilibrium gas release. in International Journal of Pressure Vessels and Piping Elsevier Sci Ltd, Oxford., 165, 229-240. https://doi.org/10.1016/j.ijpvp.2018.07.009
Ivljanin B, Stevanović V, Gajić A. Water hammer with non-equilibrium gas release. in International Journal of Pressure Vessels and Piping. 2018;165:229-240. doi:10.1016/j.ijpvp.2018.07.009 .
Ivljanin, Bojan, Stevanović, Vladimir, Gajić, Aleksandar, "Water hammer with non-equilibrium gas release" in International Journal of Pressure Vessels and Piping, 165 (2018):229-240, https://doi.org/10.1016/j.ijpvp.2018.07.009 . .