Cavitation erosion modelling on a radial divergent test section using RANS

Kevorkijan, Luka (avtor), Lešnik, Luka (avtor), Biluš, Ignacijo (avtor)

Cavitation is the phenomenon of fluid evaporation in hydraulic systems, which occurs due to a pressure drop below the value of the vapor pressure. For numerical modelling of this generally undesirable phenomenon, which is often associated with material damage (erosion), there are various mathematical vapor transfer models that have been validated in the past. There are different approaches to predicting cavitation erosion, which have mostly been experimental in the past. Recently various numerical models have been developed with the development of numerical simulations. They describe the phenomenon of cavitation erosion based on different theoretical considerations, such as Pressure wave hypothesis, Microjet hypothesis, or a combination of both. In the present paper, an analysis of the Schnerr-Sauer transport cavitation model was used, upgraded with an erosive potential energy model based on pressure wave hypothesis for cavitation erosion prediction. The extended numerical model has been applied to the case of a radial divergent test section in three different mathematical formulations. The results of simulation were compared and validated to experimental work performed by other authors. The study shows that the distribution of surface accumulated energy agrees with the experimental results, although certain differences exist between formulations. The applied method appears to be appropriate for further use, and to be extended to materials response modelling in the future.

• Jezik: Angleški jezik
• Ključne besede: cavitation, erosion, erosive potential energy, 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
• Leto izida: 2022
• Št. strani: Str. 71-81
• Številčenje: Vol. 68, iss. 2
• PID: 20.500.12556/RUL-135436
• UDK: 519.6:621.22
• ISSN pri članku: 0039-2480
• DOI: 10.5545/sv-jme.2021.7364
• COBISS.SI-ID: 99355907
• Datum objave v RUL: 15.03.2022

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.
• Začetek licenciranja: 13.02.2022
• Vezano na: Accepted for publication

Sekundarni jezik

• Jezik: Slovenski jezik
• Naslov: Modeliranje kavitacijske erozije na radialno divergentnem testnem odseku z uporabo RANS
• Ključne besede: kavitacija, erozija, erozivna potencialna energija, numerične simulacije

Projekti

• Financer: ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
• Številka projekta: P2-0196
• Naslov: Raziskave v energetskem, procesnem in okoljskem inženirstvu