A full integration of a dispersion and interface closures in the standard k-epsilon model of turbulence

作者：Selma B^*; Bannari R; Proulx P

来源：Chemical Engineering Science, 2010, 65(20): 5417-5428.

DOI：10.1016/j.ces.2010.06.020

• Bubble columns
• Turbulence
• Dispersion
• Interface
• CFD
• OpenFOAM

In the following work, the fundamental aspects of the hydrodynamics of gas-liquid flows in a rectangular bubble column are studied using an Eulerian-Eulerian approach. The model is established in a full three dimensional, unsteady state form and the solution method is based on a new open-source CFD package using a tensor-based formulation applied OpenFOAM. The effects of the drag, lift and virtual mass on the fluid dynamics and time-averaged properties of both phases are studied and discussed. A full integration of closures terms is proposed where the standard k-epsilon model of turbulence is modified to include the effect of the dispersed phase and the bubble-liquid interface on the turbulence behaviour and the hydrodynamic of multiphase flow. The numerical results are compared with the experimental data available in the scientific literature, and they show a good agreement.

• 出版日期2010-10-15