Počet záznamů: 1
A criterion for the occurrence of bubble fission and its modeling
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SYSNO ASEP 0388349 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název A criterion for the occurrence of bubble fission and its modeling Tvůrce(i) Delale, C. F. (TR)
Pasinlioğlu, S. (TR)
Zima, Patrik (UT-L) RIDZdroj.dok. Proceedings of the Eighth International Symposium on Cavitation (CAV 2012). - Singapore : Research Publishing Services, 2012 / Ohl C-D. ; Klaseboer E. ; Ohl S. W. ; Gong S. W. ; Khoo B. CH. - ISBN 978-981-07-2826-7 Rozsah stran s. 78-82 Poč.str. 5 s. Forma vydání Tištěná - P Akce International Symposium on Cavitation /8./ CAV 2012 Datum konání 13.08.2012-16.08.2012 Místo konání Singapur Země SG - Singapur Typ akce WRD Jazyk dok. eng - angličtina Země vyd. SG - Singapur Klíč. slova bubble dynamics ; bubble fission ; cavitation Vědní obor RIV BK - Mechanika tekutin CEP GAP101/10/1428 GA ČR - Grantová agentura ČR CEZ AV0Z20760514 - UT-L (2005-2011) DOI 10.3850/978-981-07-2826-7_192 Anotace 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 volume during 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 dissipation occur between the models for relatively high fission fragment numbers. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2013
Počet záznamů: 1