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Statements

Subject Item
n2:RIV%2F61388998%3A_____%2F12%3A00388315%21RIV13-AV0-61388998
rdf:type
n7:Vysledek skos:Concept
dcterms:description
The paper presents the latest progress in assessing the collapse aggressiveness of cavitation bubbles in near-steady-state flow with traveling bubble cavitation using two-way coupling of the RANS equation and the Rayleigh-Plesset equation. The aggressiveness is determined from the energy dissipated during the collapse. It is assumed that bubbles break up under suitable conditions. The criterion for bubble breakup is based on the linear Rayleigh-Taylor analysis of the spherical bubble surface. The model is tested numerically for a 2D hydrofoil. The bubbles are assumed spherical and their interaction with the solid wall is not considered. Material effects due to cavitation erosion are not studied. The model is implemented in the in-house 3-D solver for turbulent pump flow. The numerical results for the 2D hydrofoil are compared to the erosion patterns obtained on the hydrofoil surface obtained from the cavitation tunnel measurement. Extension to complex 3D geometries, such as pump impellers or nozzles, where the condition of traveling or bubbly cavitation mode is fulfilled, is straightforward. The paper presents the latest progress in assessing the collapse aggressiveness of cavitation bubbles in near-steady-state flow with traveling bubble cavitation using two-way coupling of the RANS equation and the Rayleigh-Plesset equation. The aggressiveness is determined from the energy dissipated during the collapse. It is assumed that bubbles break up under suitable conditions. The criterion for bubble breakup is based on the linear Rayleigh-Taylor analysis of the spherical bubble surface. The model is tested numerically for a 2D hydrofoil. The bubbles are assumed spherical and their interaction with the solid wall is not considered. Material effects due to cavitation erosion are not studied. The model is implemented in the in-house 3-D solver for turbulent pump flow. The numerical results for the 2D hydrofoil are compared to the erosion patterns obtained on the hydrofoil surface obtained from the cavitation tunnel measurement. Extension to complex 3D geometries, such as pump impellers or nozzles, where the condition of traveling or bubbly cavitation mode is fulfilled, is straightforward.
dcterms:title
Modeling bubble collapse aggressiveness in traveling bubble cavitation using bubble breakup model Modeling bubble collapse aggressiveness in traveling bubble cavitation using bubble breakup model
skos:prefLabel
Modeling bubble collapse aggressiveness in traveling bubble cavitation using bubble breakup model Modeling bubble collapse aggressiveness in traveling bubble cavitation using bubble breakup model
skos:notation
RIV/61388998:_____/12:00388315!RIV13-AV0-61388998
n7:predkladatel
n8:ico%3A61388998
n3:aktivita
n5:P n5:Z
n3:aktivity
P(GAP101/10/1428), Z(AV0Z20760514)
n3:dodaniDat
n21:2013
n3:domaciTvurceVysledku
n18:1168711
n3:druhVysledku
n13:D
n3:duvernostUdaju
n19:S
n3:entitaPredkladatele
n23:predkladatel
n3:idSjednocenehoVysledku
150988
n3:idVysledku
RIV/61388998:_____/12:00388315
n3:jazykVysledku
n14:eng
n3:klicovaSlova
bubble collapse; traveling bubble cavitation; numerical modeling
n3:klicoveSlovo
n6:numerical%20modeling n6:traveling%20bubble%20cavitation n6:bubble%20collapse
n3:kontrolniKodProRIV
[42E05F0BC0FE]
n3:mistoKonaniAkce
Singapur
n3:mistoVydani
Singapore
n3:nazevZdroje
Proceedings of the Eighth International Symposium on Cavitation (CAV 2012)
n3:obor
n10:BK
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
2
n3:projekt
n20:GAP101%2F10%2F1428
n3:rokUplatneniVysledku
n21:2012
n3:tvurceVysledku
Zima, Patrik Sedlář, M.
n3:typAkce
n22:WRD
n3:zahajeniAkce
2012-08-13+02:00
n3:zamer
n11:AV0Z20760514
s:numberOfPages
5
n4:doi
10.3850/978-981-07-2826-7_209
n16:hasPublisher
Research Publishing Services
n9:isbn
978-981-07-2826-7