About: Modeling bubble collapse aggressiveness in traveling bubble cavitation using bubble breakup model

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
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. (en)
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 (en)
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 (en)
skos:notation	RIV/61388998:_____/12:00388315!RIV13-AV0-61388998
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GAP101/10/1428), Z(AV0Z20760514)
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Zima, Patrik
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav termomechaniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	150988
http://linked.open...ai/riv/idVysledku	RIV/61388998:_____/12:00388315
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	bubble collapse; traveling bubble cavitation; numerical modeling (en)
http://linked.open.../riv/klicoveSlovo	numerical modeling traveling bubble cavitation bubble collapse
http://linked.open...ontrolniKodProRIV	[42E05F0BC0FE]
http://linked.open...v/mistoKonaniAkce	Singapur
http://linked.open...i/riv/mistoVydani	Singapore
http://linked.open...i/riv/nazevZdroje	Proceedings of the Eighth International Symposium on Cavitation (CAV 2012)
http://linked.open...in/vavai/riv/obor	BK
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Collapse and fission mechanisms of ultrasonically excited cavitation bubbles near a solid boundary in Newtonian liquid
http://linked.open...UplatneniVysledku	2012
http://linked.open...iv/tvurceVysledku	Zima, Patrik Sedlář, M.
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2012-08-13 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Complex dynamical systems in thermodynamics, fluid and solid mechanics
number of pages	5 (xsd:int)
http://bibframe.org/vocab/doi	10.3850/978-981-07-2826-7_209
http://purl.org/ne...btex#hasPublisher	Research Publishing Services
https://schema.org/isbn	978-981-07-2826-7

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