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.
Zielona Góra: Uniwersytet Zielonogórski
IJAME, volume 23, number 1 (2018)
Biblioteka Uniwersytetu Zielonogórskiego
2023-07-06
2023-03-31
71
https://zbc.uz.zgora.pl/repozytorium/publication/80051
Nazwa wydania | Data |
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Shapes of an air taylor bubble in stagnant liquids influenced by different surface tensions | 2023-07-06 |
Lertnuwat, Boonchai Jurczak, Paweł - red.
Gupta, Anil K. Shandil, R.G. Jurczak, Paweł - red.
Gharaibeh, Mohammad A. Jurczak, Paweł - red.
Mamaloukas, ?Christos Mazumdar, Himadri Pai Jurczak, Paweł - red.
Prusa, Joseph M. Smolarkiewicz, Piotr K. Wyszogrodzki, Andrzej A. Triggiani, Roberto- ed. Maksimov, Vyacheslav I. - ed.
Kholboev, Bakhodir Murodovich Navruzov, Dilshod Primkulovich Asrakulova, Dono Sunnatullaevna Engalicheva, Nelia Rustamovna Turemuratova, Ariukhan Abatbayevna Jurczak, Paweł - red.