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Statements

Subject Item
n2:RIV%2F61989100%3A27360%2F08%3A00019418%21RIV11-GA0-27360___
rdf:type
n14:Vysledek skos:Concept
dcterms:description
40 years ago, Wellek studied the shape of rising drops in immiscible liquid. The shape of drops was found to be essentially close to an oblate ellipsoid, and the ratio of vertical and horizontal dimension of the side projection of drops was determined as a function of Eötvös number. Resulting well known correlation is also frequently used to predict the shape of medium size so called ellipsoidal bubbles (for air-water system volume of the bubbles 10-500 mm3). By image analysis of records of rising bubbles, obtained using a high speed video camera, time series of characteristic parameters of the bubble projection were obtained. Model of oblate ellipsoid is quite satisfactory. However, unlike the drops, rising bubbles are significantly wobbling and evidently, the ellipsoid and all geometry parameters of its projection change as well. 40 years ago, Wellek studied the shape of rising drops in immiscible liquid. The shape of drops was found to be essentially close to an oblate ellipsoid, and the ratio of vertical and horizontal dimension of the side projection of drops was determined as a function of Eötvös number. Resulting well known correlation is also frequently used to predict the shape of medium size so called ellipsoidal bubbles (for air-water system volume of the bubbles 10-500 mm3). By image analysis of records of rising bubbles, obtained using a high speed video camera, time series of characteristic parameters of the bubble projection were obtained. Model of oblate ellipsoid is quite satisfactory. However, unlike the drops, rising bubbles are significantly wobbling and evidently, the ellipsoid and all geometry parameters of its projection change as well.
dcterms:title
Oscillation of the shape of rising bubbles Oscillation of the shape of rising bubbles
skos:prefLabel
Oscillation of the shape of rising bubbles Oscillation of the shape of rising bubbles
skos:notation
RIV/61989100:27360/08:00019418!RIV11-GA0-27360___
n4:aktivita
n18:P
n4:aktivity
P(GA104/07/1110)
n4:dodaniDat
n10:2011
n4:domaciTvurceVysledku
n8:8003122 n8:5638070 n8:9764062
n4:druhVysledku
n21:D
n4:duvernostUdaju
n16:S
n4:entitaPredkladatele
n13:predkladatel
n4:idSjednocenehoVysledku
385412
n4:idVysledku
RIV/61989100:27360/08:00019418
n4:jazykVysledku
n19:eng
n4:klicovaSlova
oscillation frequency, ellipsoidal bubbles, bubble motion
n4:klicoveSlovo
n7:bubble%20motion n7:oscillation%20frequency n7:ellipsoidal%20bubbles
n4:kontrolniKodProRIV
[51ED836AEBC4]
n4:mistoKonaniAkce
Praha, Česká republika
n4:mistoVydani
Praha, Česká republika
n4:nazevZdroje
Hydrodynamic Processes CHISA 2008
n4:obor
n15:CI
n4:pocetDomacichTvurcuVysledku
3
n4:pocetTvurcuVysledku
3
n4:projekt
n12:GA104%2F07%2F1110
n4:rokUplatneniVysledku
n10:2008
n4:tvurceVysledku
Smutná, Kateřina Večeř, Marek Wichterle, Kamil
n4:typAkce
n6:WRD
n4:zahajeniAkce
2008-08-24+02:00
s:numberOfPages
7
n17:hasPublisher
Process Engineering Publisher, Ing. Jan Novosad
n20:isbn
978-80-02-02050-9
n3:organizacniJednotka
27360