Flow field in a downward diverging channel and its application

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F16%3A86095903" target="_blank" >RIV/61989100:27350/16:86095903 - isvavai.cz</a>

Alternative codes found

RIV/61989100:27360/16:86095903

Result on the web

<a href="http://dx.doi.org/10.1515/chempap-2016-0044" target="_blank" >http://dx.doi.org/10.1515/chempap-2016-0044</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/chempap-2016-0044" target="_blank" >10.1515/chempap-2016-0044</a>

Result language

angličtina

Original language name

Flow field in a downward diverging channel and its application

Original language description

The flow in a downward divergent channel turns out to be an interesting experimental setup for the observation of upward floating bubbles that appear to be levitating in view of the observer. A more detailed analysis of this flow and its characteristic parameters is necessary for better understanding of this phenomenon. The boundary layer theory was used to derive the velocity field for the experimental setup. The actual flow of a liquid in the presence of a bubble was studied experimentally by measuring the position of the bubble; the data were then statistically processed by an image analysis. Observation of the bubble positions distribution showed that it is reasonable to assume a flat velocity profile of the liquid in the channel and that the bubbles do not tend to move into the boundary layer. In our experiments, volume of the air bubbles floating in water was 200 mm(3) and of that of bubbles floating in aqueous glycerin was 300 mm(3). Thus, the experiment used in this work is suitable for reliable determination of instantaneous and average bubble rising velocities as well as of those of horizontal and vertical oscillations.

Czech name

—

Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CI - Industrial chemistry and chemical engineering

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2016

Confidentiality

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

Name of the periodical

Chemical papers

ISSN

0366-6352

e-ISSN

—

Volume of the periodical

70

Issue of the periodical within the volume

8

Country of publishing house

DE - GERMANY

Number of pages

11

Pages from-to

1106-1116

UT code for WoS article

000378421200011

EID of the result in the Scopus database

2-s2.0-84969850132