Struktura obiektu

Autor:

Lertnuwat, Boonchai

Współtwórca:

Jurczak, Paweł - red.

Tytuł:

Shapes of an air taylor bubble in stagnant liquids influenced by different surface tensions

Tytuł publikacji grupowej:

IJAME, volume 23 (2018)

Temat i słowa kluczowe:

Dumitrescu-and-Taylor model ; Froude number ; Surface tension ; Taylor bubble ; turbulence

Abstract:

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.

Wydawca:

Zielona Góra: Uniwersytet Zielonogórski

Data wydania:

2018

Typ zasobu:

artykuł

Format:

application/pdf

DOI:

10.1515/ijame-2018-0005

Strony:

79-90

Źródło:

IJAME, volume 23, number 1 (2018)

Jezyk:

eng

Licencja:

CC 4.0

Licencja CC BY-NC-ND 4.0:

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Prawa do dysponowania publikacją:

Biblioteka Uniwersytetu Zielonogórskiego