About: Oscillation Frequency of Bubbles Moving Periodically in Various Liquids

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Experimental study of bubble motion in downward liquid flow is provided in the contribution. We concentrate on medium sized bubbles (de = 5 ? 9 mm) in various liquids. The bubbles have rising velocities of 0.15?0.25 m s-1. Therefore, bubbles can be observed only limited time in stagnant liquids. To overcome this limitation, a counterflow experimental apparatus is employed. Under such circumstances, bubble levitates in the counterflow and its motion is recorded by a high speed camera. Two perpendicular projections of the measuring section are obtained by means of a mirror. Continous phases are water, glycerol solution (67 wt.%), and polyacrylamide solution (0,25 wt.%). Dispersed phase is air. Corresponding Eötvös number (describing bubble deformation) falls in the range of 3 to 11. Flow regime is characterised by Reynolds numbers of 60 to 1700. Trajectory of the ellipsoidal bubbles is not linear, but someway wavy. This unsteady bubble motion is accompanied by bubble wobbling. Frequency of the oscillato Experimental study of bubble motion in downward liquid flow is provided in the contribution. We concentrate on medium sized bubbles (de = 5 ? 9 mm) in various liquids. The bubbles have rising velocities of 0.15?0.25 m s-1. Therefore, bubbles can be observed only limited time in stagnant liquids. To overcome this limitation, a counterflow experimental apparatus is employed. Under such circumstances, bubble levitates in the counterflow and its motion is recorded by a high speed camera. Two perpendicular projections of the measuring section are obtained by means of a mirror. Continous phases are water, glycerol solution (67 wt.%), and polyacrylamide solution (0,25 wt.%). Dispersed phase is air. Corresponding Eötvös number (describing bubble deformation) falls in the range of 3 to 11. Flow regime is characterised by Reynolds numbers of 60 to 1700. Trajectory of the ellipsoidal bubbles is not linear, but someway wavy. This unsteady bubble motion is accompanied by bubble wobbling. Frequency of the oscillato (en)
Title	Oscillation Frequency of Bubbles Moving Periodically in Various Liquids Oscillation Frequency of Bubbles Moving Periodically in Various Liquids (en)
skos:prefLabel	Oscillation Frequency of Bubbles Moving Periodically in Various Liquids Oscillation Frequency of Bubbles Moving Periodically in Various Liquids (en)
skos:notation	RIV/61989100:27360/08:00019453!RIV10-GA0-27360___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GA104/07/1110)
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Smutná, Kateřina Wichterle, Kamil Večeř, Marek
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	Vysoká škola báňská - Technická univerzita Ostrava / Fakulta metalurgie a materiálového inženýrství
http://linked.open...dnocenehoVysledku	385410
http://linked.open...ai/riv/idVysledku	RIV/61989100:27360/08:00019453
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	oscillation frequency; autocorrelation; bubble motion (en)
http://linked.open.../riv/klicoveSlovo	autocorrelation bubble motion oscillation frequency
http://linked.open...ontrolniKodProRIV	[27E78D5F4544]
http://linked.open...v/mistoKonaniAkce	Tatranské Matliare, Slovakia
http://linked.open...i/riv/mistoVydani	Bratislava
http://linked.open...i/riv/nazevZdroje	35th International Conference of Slovak Society of Chemical Engineering
http://linked.open...in/vavai/riv/obor	CI
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Hydrodynamics and transport phenomena in multiphase systems: from microscale to macroscale
http://linked.open...UplatneniVysledku	2008
http://linked.open...iv/tvurceVysledku	Večeř, Marek Wichterle, Kamil Smutná, Kateřina
http://linked.open...vavai/riv/typAkce	EUR - Evropská
http://linked.open.../riv/zahajeniAkce	2008-05-26 (xsd:date)
number of pages	1 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Slovak Society of Chemical Engineering,
https://schema.org/isbn	978-80-227-2903-1
http://localhost/t...ganizacniJednotka	27360

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