Numerical investigation of closures for interface forces acting on single air-bubbles in water using Volume of Fluid and Front Tracking models
- 作者：W. Dijkhuizen ; E.I.V. van den Hengel ; N.G. Deen ; M. van Sint Annaland and J.A.M. Kuipers
- 关键词：Front tracking ; Volume of Fluid ; Direct numerical simulation ; Computational fluid dynamics ; Gas– ; liquid flow
- 刊名：Chemical Engineering Science
- 出版年：2005
- 期刊代码：18_00092509
- 类别：ce
- 出版时间：2005
- 卷：60
- 期：22
- 页码：6169-6175
- 文件大小：584 K
摘要
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.