Asymmetric deformation of bubble shape ? cause or effect of vortex shedding?

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F12%3A86084805" target="_blank" >RIV/61989100:27360/12:86084805 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Asymmetric deformation of bubble shape ? cause or effect of vortex shedding?
Original language description
Two perpendicular projections of rising bubbles were observed in countercurrent downstream diverging flow. Evidently, the bubbles did not enter the boundary layer at the channel wall and plug liquid flow assumption was acceptable in our experimental equipment. It proved that this experiment is adequate for simulation of bubble rise in quiescent liquid column. Recent data taken by high speed camera Olympus allowed a period 60 seconds to be recorded. Image analysis by tailor-made program provides time series of quantities related to the position, size, and shape of bubbles. Besides determination of the aspect ratio of equivalent oblate ellipsoid, deviation from this shape has been investigated in sense of the parameters shown in Fig.1. Autocorrelation ofthe data indicate that the bubble inclination, ?, is harmonically oscillating with frequency 5 10 Hz, cross correlation shows that shift of the center of mass ?x to the lower side as well as the horizontal velocity increase with increasi
Czech name
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Czech description
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Project
<a href="/en/project/GA104%2F07%2F1110" target="_blank" >GA104/07/1110: Hydrodynamics and transport phenomena in multiphase systems: from microscale to macroscale</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
20th International Congress of Chemical and Process Engineering CHISA 2012 and 15th Conference PRES 2012 : CD-ROM of full texts : 25-29 August 2012, Prague, Czech Republic
ISBN
978-80-905035-1-9
ISSN
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e-ISSN
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Number of pages
8
Pages from-to
"'D1.2' 1@@@###"," 'D1.2' 8"
Publisher name
Orgit
Place of publication
Praha
Event location
Praha
Event date
Aug 25, 2012
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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