Numerical investigation of closures for interface forces acting on single air-bubbles in water using volume and fluid and front tracking models

W. Dijkhuizen, E.I.V. Hengel, van den, N.G. Deen, M. Sint Annaland, van, J.A.M. Kuipers

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Abstract

Closures for the drag and virtual mass forces acting on a single air bubble rising in initially quiescent pure water have been numerically investigated using direct numerical simulation techniques. A 3D Front Tracking model was used and the results were compared with simulation results obtained with a 2D Volume of Fluid model to assess the influence of the third dimension. In the simulations realistic values were taken for the physical properties, i.e., a density ratio of 800. The computed time-averaged terminal rise velocity and mean aspect ratio for individual air bubbles ranging in equivalent diameter from 1 to 10 mm rising in pure water compare well with available experimental data.
Original languageEnglish
Pages (from-to)6169-6175
JournalChemical Engineering Science
Volume60
Issue number22
DOIs
Publication statusPublished - 2005

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