- Tytuł:
- Shapes of an air Taylor bubble in stagnant liquids influenced by different surface tensions
- Autorzy:
- Lertnuwat, B.
- Powiązania:
- https://bibliotekanauki.pl/articles/265869.pdf
- Data publikacji:
- 2018
- Wydawca:
- Uniwersytet Zielonogórski. Oficyna Wydawnicza
- Tematy:
-
turbulencje
napięcie powierzchniowe
model Taylora
Dumitrescu-and-Taylor model
Froude number
surface tension
Taylor bubble
turbulence - Opis:
- The aim of this work is to propose an empirical model for predicting shapes of a Taylor bubble, which is a part of slug flows, under different values of the surface tension in stagnant liquids by employing numerical simulations. The k - turbulence model was used in the framework of finite volume method for simulating flow fields in a unit of slug flow and also the pressure distribution on a Taylor bubble surface. Assuming that an air pressure distribution inside the Taylor bubble must be uniform, a grid search method was exploited to find an appropriate shape of a Taylor bubble for six values of surface tension. It was found that the shape of a Taylor bubble would be blunter if the surface tension was increased. This was because the surface tension affected the Froude number, controlling the flow around a Taylor bubble. The simulation results were also compared with the Taylor bubble shape, created by the Dumitrescu-and-Taylor model and former studies in order to ensure that they were consistent. Finally, the empirical model was presented from the simulation results.
- Źródło:
-
International Journal of Applied Mechanics and Engineering; 2018, 23, 1; 79-90
1734-4492
2353-9003 - Pojawia się w:
- International Journal of Applied Mechanics and Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł