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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F12%3A00388315" target="_blank" >RIV/61388998:_____/12:00388315 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.3850/978-981-07-2826-7_209" target="_blank" >http://dx.doi.org/10.3850/978-981-07-2826-7_209</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3850/978-981-07-2826-7_209" target="_blank" >10.3850/978-981-07-2826-7_209</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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 modelis 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 impell

Název v anglickém jazyce

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

Popis výsledku anglicky

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 modelis 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 impell

Druh

D - Stať ve sborníku

CEP obor

BK - Mechanika tekutin

OECD FORD obor

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Projekt

<a href="/cs/project/GAP101%2F10%2F1428" target="_blank" >GAP101/10/1428: Mechanizmy kolapsu a štěpení ultrazvukem buzených kavitačních bublin v blízkosti pevné stěny v Newtonské kapalině</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the Eighth International Symposium on Cavitation (CAV 2012)

ISBN

978-981-07-2826-7

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

182-186

Název nakladatele

Research Publishing Services

Místo vydání

Singapore

Místo konání akce

Singapur

Datum konání akce

13. 8. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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