20.500.12556/RUL-135436 Cavitation erosion modelling on a radial divergent test section using RANS Modeliranje kavitacijske erozije na radialno divergentnem testnem odseku z uporabo RANS 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. cavitation erosion erosive potential energy numerical simulation kavitacija erozija erozivna potencialna energija numerične simulacije true false true Angleški jezik Slovenski jezik Članek v reviji 2022-03-15 08:20:22 2022-03-15 08:20:24 2022-09-14 04:13:18 0000-00-00 00:00:00 2022 0 0 Str. 71-81 iss. 2 Vol. 68 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 519.6:621.22 0039-2480 10.5545/sv-jme.2021.7364 99355907 RAZ_Kevorkijan_Luka_2022.pdf RAZ_Kevorkijan_Luka_2022.pdf 1 6AEB44D20E677674139D9F47D4A6E6DF 9c5efaa782b604a988621d246f4d1059011955f453219287fa582ca1e57d8529 dbf242bf-a430-11ec-8556-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=154510 https://www.sv-jme.eu/sl/article/cavitation-erosion-modelling-on-radial-divergent-test-section-using-rans/ 0 d443ee17-a430-11ec-8556-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=154509 Fakulteta za strojništvo Strojniški vestnik 0 0 0