- Tytuł:
- Analysis of the mechanism of gas bubble break-up in liquids during the self-aspirating impeller operation
- Autorzy:
-
Stelmach, J.
Kuncewicz, Cz.
Musoski, R. - Powiązania:
- https://bibliotekanauki.pl/articles/185320.pdf
- Data publikacji:
- 2016
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
self-aspirating impeller
PIV
gas bubble size distribution
energy dissipation rate
gas bubble sizes
pęcherzyk gazu
rozpraszanie energii - Opis:
- Feasibility of a model of gas bubble break-up and coalescence in an air-lift column enabling determination of bubble size distributions in a mixer with a self-aspirating impeller has been attempted in this paper. According to velocity measurements made by the PIV method with a self-aspirating impeller and Smagorinski’s model, the spatial distribution of turbulent energy dissipation rate close to the impeller was determined. This allowed to positively verify the dependence of gas bubble velocity used in the model, in relation to turbulent energy dissipation rate. Furthermore, the range of the eddy sizes capable of breaking up the gas bubbles was determined. The verified model was found to be greatly useful, but because of the simplifying assumptions some discrepancies of experimental and model results were observed.
- Źródło:
-
Chemical and Process Engineering; 2016, 37, 3; 441-457
0208-6425
2300-1925 - Pojawia się w:
- Chemical and Process Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł