A criterion for the occurrence of bubble fission and its modeling

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F12%3A00388349" target="_blank" >RIV/61388998:_____/12:00388349 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.3850/978-981-07-2826-7_192" target="_blank" >http://dx.doi.org/10.3850/978-981-07-2826-7_192</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3850/978-981-07-2826-7_192" target="_blank" >10.3850/978-981-07-2826-7_192</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A criterion for the occurrence of bubble fission and its modeling

Popis výsledku v původním jazyce

In this paper we introduce a bubble break-up criterion based on Rayleigh-Taylor instability where the number of fission fragments is taken as a free parameter. Consequently, we identify the bubble break-up time, prior to the time where the minimum volumeduring the collapse period is achieved, utilizing the most unstable mode of the Rayleigh-Taylor instability. We then modify the model of Delale and Tunc [1] by shifting the time of the discontinuity in the mean bubble radius during break-up to the proposed bubble break-up time before the minimum volume is reached. A numerical algorithm to calculate the predictions of the proposed model is constructed. Results obtained by the proposed bubble break-up criterion, as compared to the model of Delale and Tunc, for a typical violently collapsing cavitation bubble show that, in the proposed model, more energy is dissipated during bubble fission if the number of fission fragments is low enough and that no significant differences in energy dissi

Název v anglickém jazyce

A criterion for the occurrence of bubble fission and its modeling

Popis výsledku anglicky

In this paper we introduce a bubble break-up criterion based on Rayleigh-Taylor instability where the number of fission fragments is taken as a free parameter. Consequently, we identify the bubble break-up time, prior to the time where the minimum volumeduring the collapse period is achieved, utilizing the most unstable mode of the Rayleigh-Taylor instability. We then modify the model of Delale and Tunc [1] by shifting the time of the discontinuity in the mean bubble radius during break-up to the proposed bubble break-up time before the minimum volume is reached. A numerical algorithm to calculate the predictions of the proposed model is constructed. Results obtained by the proposed bubble break-up criterion, as compared to the model of Delale and Tunc, for a typical violently collapsing cavitation bubble show that, in the proposed model, more energy is dissipated during bubble fission if the number of fission fragments is low enough and that no significant differences in energy dissi

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

—

e-ISSN

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Počet stran výsledku

5

Strana od-do

78-82

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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