Object

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

Creator:

Lertnuwat, Boonchai

Date:

2018

Resource Type:

artykuł

Contributor:

Jurczak, Paweł - red.

Group publication title:

IJAME, volume 23 (2018)

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.

Publisher:

Zielona Góra: Uniwersytet Zielonogórski

Format:

application/pdf

Resource Identifier:

oai:zbc.uz.zgora.pl:72918

DOI:

10.1515/ijame-2018-0005

Pages:

79-90

Source:

IJAME, volume 23, number 1 (2018)

Language:

eng

License:

CC 4.0

License CC BY-NC-ND 4.0:

click here to follow the link

Rights:

Biblioteka Uniwersytetu Zielonogórskiego

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