Influence of liquid viscosity on rising bubble behavior

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F07%3A00016287" target="_blank" >RIV/61989100:27360/07:00016287 - 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

Influence of liquid viscosity on rising bubble behavior

Original language description

Experimental study of single levitating bubbles is presented in the contribution. Long-term observation of the bubbles was done in a downward liquid flow. Influence of liquid viscosity on bubble behavior was evaluated. In order to obtain various viscosity values, water and 40wt% glycerol solutions were used as a liquid. Our research was concerned with medium-sized ellipsoidal bubbles. Bubble sizes were ranging from 50 to 400 mm3, with characteristic values 1 < Eo < 40, Re > 100. Path of the rising bubble is not a straight line, but it looks like a helix or a harmonic curve. Upper projection of bubble trajectory has an ellipsoidal shape. Bubble motion can be affected by a liquid rotation. The rotation is caused by stirring and is also influenced by Coriolis effect. To evaluate a significance of Coriolis effect, experiments with different stirring orientation were conducted.

Czech name

Vliv viskozity kapaliny na chování stoupající bubliny

Czech description

Experimental study of single levitating bubbles is presented in the contribution. Long-term observation of the bubbles was done in a downward liquid flow. Influence of liquid viscosity on bubble behavior was evaluated. In order to obtain various viscosity values, water and 40wt% glycerol solutions were used as a liquid. Our research was concerned with medium-sized ellipsoidal bubbles. Bubble sizes were ranging from 50 to 400 mm3, with characteristic values 1 < Eo < 40, Re > 100. Path of the rising bubble is not a straight line, but it looks like a helix or a harmonic curve. Upper projection of bubble trajectory has an ellipsoidal shape. Bubble motion can be affected by a liquid rotation. The rotation is caused by stirring and is also influenced by Coriolis effect. To evaluate a significance of Coriolis effect, experiments with different stirring orientation were conducted.

Type

D - Article in proceedings

CEP classification

CI - Industrial chemistry and chemical engineering

OECD FORD branch

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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

2007

Confidentiality

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

Article name in the collection

34th International Conference of Slovak Society of Chemical Engineering

ISBN

978-80-227-2640-5

ISSN

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e-ISSN

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Number of pages

4

Pages from-to

53-56

Publisher name

Slovenská technická univerzita v Bratislave

Place of publication

Bratislava

Event location

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Event date

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Type of event by nationality

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UT code for WoS article

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