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Statements

Subject Item
n2:RIV%2F67985858%3A_____%2F10%3A00343074%21RIV11-GA0-67985858
rdf:type
n3:Vysledek skos:Concept
dcterms:description
The measurement accuracy of a mono-fiber optical probe is studied experimentally using isolated bubbles rising freely in a still liquid. The dwell time of the probe tip within the gas phase, which is obtained from both the optical probe signal and high-speed visualization, is compared with the dwell time expected for a non-perturbed bubble. The measurement error results mainly from the intrusive nature of the optical probe, which modifies the behavior of the bubble when it comes into contact with the probe tip. The measured dwell time therefore differs from its ideal value that would be found with an unperturbed bubble. For a wetting liquid, the interaction increases the dwell time if the bubble is pierced near its pole, and shortens it for piercing near the equator. It is shown that the error can be correlated with a modified Weber number, and this correlation is helpful for sensor selection and for uncertainty estimate. The measurement accuracy of a mono-fiber optical probe is studied experimentally using isolated bubbles rising freely in a still liquid. The dwell time of the probe tip within the gas phase, which is obtained from both the optical probe signal and high-speed visualization, is compared with the dwell time expected for a non-perturbed bubble. The measurement error results mainly from the intrusive nature of the optical probe, which modifies the behavior of the bubble when it comes into contact with the probe tip. The measured dwell time therefore differs from its ideal value that would be found with an unperturbed bubble. For a wetting liquid, the interaction increases the dwell time if the bubble is pierced near its pole, and shortens it for piercing near the equator. It is shown that the error can be correlated with a modified Weber number, and this correlation is helpful for sensor selection and for uncertainty estimate.
dcterms:title
Measurement Accuracy of a Mono-fiber Optical Probe in a Bubbly Flow Measurement Accuracy of a Mono-fiber Optical Probe in a Bubbly Flow
skos:prefLabel
Measurement Accuracy of a Mono-fiber Optical Probe in a Bubbly Flow Measurement Accuracy of a Mono-fiber Optical Probe in a Bubbly Flow
skos:notation
RIV/67985858:_____/10:00343074!RIV11-GA0-67985858
n4:aktivita
n8:Z n8:P
n4:aktivity
P(GA104/07/1110), P(GP104/06/P287), P(IAA200720801), Z(AV0Z40720504)
n4:cisloPeriodika
7
n4:dodaniDat
n11:2011
n4:domaciTvurceVysledku
n10:5612772 n10:5908701 n10:3560600
n4:druhVysledku
n15:J
n4:duvernostUdaju
n9:S
n4:entitaPredkladatele
n5:predkladatel
n4:idSjednocenehoVysledku
269980
n4:idVysledku
RIV/67985858:_____/10:00343074
n4:jazykVysledku
n17:eng
n4:klicovaSlova
optical probe; bubble-fiber interaction; void fraction
n4:klicoveSlovo
n6:bubble-fiber%20interaction n6:optical%20probe n6:void%20fraction
n4:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n4:kontrolniKodProRIV
[FC5FA3BF85E8]
n4:nazevZdroje
International Journal of Multiphase Flow
n4:obor
n18:CI
n4:pocetDomacichTvurcuVysledku
3
n4:pocetTvurcuVysledku
6
n4:projekt
n7:IAA200720801 n7:GP104%2F06%2FP287 n7:GA104%2F07%2F1110
n4:rokUplatneniVysledku
n11:2010
n4:svazekPeriodika
36
n4:tvurceVysledku
Večeř, M. Cartellier, A. Vejražka, Jiří Orvalho, Sandra Petronilho Růžička, Marek Sechet, Ph.
n4:wos
000278693800002
n4:zamer
n14:AV0Z40720504
s:issn
0301-9322
s:numberOfPages
16