Rise velocities of bubbles in liquids

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F01%3A00001186" target="_blank" >RIV/61989100:27360/01:00001186 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Rise velocities of bubbles in liquids

Popis výsledku v původním jazyce

The paper reports recent progress in our project of investigation of bubbles levitating in downward diverging liquid flow. Here, rising bubbles can be observed under constant flow conditions for a long time period. It is quite important, as other methodsallow single bubbles to be observed for few seconds only. The rising velocity of a levitating bubble can be calculated from its position in the channel of given geometry at a known liquid flow rate. Our interest was focussed namely to the medium size spheroid bubbles, which are important for number of gas liquid processes. Extended results of rising velocities for air water system (Reynolds number Re = 500 to 3000, Eötvös number Eo = 1 to12) were presented last year. Now, the effect of liquid viscositywas investigated for similar Eo with a glycerol solution in transition region, Re = 20 to 150. Measured velocities are in general accordance with the published data for bubbles with contamined surfaces. However, qualitative changes of bub

Název v anglickém jazyce

Rise velocities of bubbles in liquids

Popis výsledku anglicky

The paper reports recent progress in our project of investigation of bubbles levitating in downward diverging liquid flow. Here, rising bubbles can be observed under constant flow conditions for a long time period. It is quite important, as other methodsallow single bubbles to be observed for few seconds only. The rising velocity of a levitating bubble can be calculated from its position in the channel of given geometry at a known liquid flow rate. Our interest was focussed namely to the medium size spheroid bubbles, which are important for number of gas liquid processes. Extended results of rising velocities for air water system (Reynolds number Re = 500 to 3000, Eötvös number Eo = 1 to12) were presented last year. Now, the effect of liquid viscositywas investigated for similar Eo with a glycerol solution in transition region, Re = 20 to 150. Measured velocities are in general accordance with the published data for bubbles with contamined surfaces. However, qualitative changes of bub

Druh

D - Stať ve sborníku

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

<a href="/cs/project/GA104%2F01%2F0547" target="_blank" >GA104/01/0547: Nestabilita homogenního tokového režimu v probublávaných kolonách</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2001

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

28th International Conference SSCHE

ISBN

80-227-1533-6

ISSN

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e-ISSN

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Počet stran výsledku

1

Strana od-do

140

Název nakladatele

Slovak Society of Chemical Engineering,

Místo vydání

Bratislava

Místo konání akce

Tatranské Matliare

Datum konání akce

21. 5. 2001

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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