- Tytuł:
- Analysis of wake structures in bubbly flowsusing Particle Image Velocimetry (PIV)
- Autorzy:
-
Lewandowski, Björn
Fertig, Micha
Krekel, Georg
Ulbricht, Mathias - Powiązania:
- https://bibliotekanauki.pl/articles/952673.pdf
- Data publikacji:
- 2019
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
bubbly flow
Particle Image Velocimetry
wake analysis
flowcharacteristics
high-speedimaging
przepływ
cząstki
analiza
charakterystyka przepływu - Opis:
- The flow structure around rising single air bubbles in water and their characteristics, such as equivalentdiameter, rising velocity and shape, was investigated using Particle Image Velocimetry (PIV) and Shadowgraphy in a transparent apparatus with a volume of 120mL. The effect of different volumetricgas flow rates, ranging from 4μL/min to 2 mL/min on the liquid velocity was studied. Ellipsoidalbubbles were observed with a rising velocity of 0.25–0.29 m/s. It was found that a Kármán vortex streetexisted behind the rising bubbles. Furthermore, the wake region expanded with increasing volumetricgas flow rate as well as the number and size of the vortices.
- Źródło:
-
Chemical and Process Engineering; 2019, 40, 1; 49-55
0208-6425
2300-1925 - Pojawia się w:
- Chemical and Process Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł