Formation of Gas Bubbles in a Stagnant Liquid Examined for the Technological Application of Metal Foam
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F19%3A00006592" target="_blank" >RIV/46747885:24210/19:00006592 - isvavai.cz</a>
Result on the web
<a href="http://www.tjprc.org/view_paper.php?id=11042" target="_blank" >http://www.tjprc.org/view_paper.php?id=11042</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.24247/ijmperdapr201916" target="_blank" >10.24247/ijmperdapr201916</a>
Alternative languages
Result language
angličtina
Original language name
Formation of Gas Bubbles in a Stagnant Liquid Examined for the Technological Application of Metal Foam
Original language description
A study of different shapes of gas bubbles rising in stagnant liquid experimentally. A testing facility with the high-speed camera was designed. The results obtained are presented in terms of dimensionless parameters i. e. Reynold’s, Morton’s and Eötvös. Factors varied to test their dependencies such as nozzle diameter (3 – 5 mm), rate of flow rate (15 and 130 l/h), viscosity, surface tension, and density were changed in order to see their effect on the shape of the bubble, its velocity in the liquid, surface tension force, drag force and buoyancy force. In order to vary such parameters, a water-ethanol mixture was used in the tank. Results showed at surface tension valued at 32 [N/m] it was not possible to trap air bubbles under the surface for the application of creating Foam, while 72 [N/m] it was possible, while for the tested flow rates most of Eötvös values were below one, which indicates that surface tension force dominates shape of the bubble when compared to gravitational force influence.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
—
OECD FORD branch
20301 - Mechanical engineering
Result continuities
Project
<a href="/en/project/EF16_019%2F0000843" target="_blank" >EF16_019/0000843: Hybrid Materials for Hierarchical Structure</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů