Numerical analysis of a two-phase flow and mixing process in a stirred tank

作者：Huang Si^*; Mohamad Abdulmajeed; Nandakumar K

来源：International Journal of Chemical Reactor Engineering, 2008, 6: A38.

• stirred vessel
• two-phase flow
• mixing process
• CFD simulation

An agitated two-phase flow and the mixing progress in an oil-water stirred tank are studied numerically using FLUENT software. The stirred cylindrical tank is equipped with an axial-type turbine and a radial-type impeller. The full Eulerian multiphase approach coupled with the standard turbulence model is performed to deal with two-phase flow with a higher volume fraction of the second ( dispersed) phase. The computation is completed by using unstructured meshes in a multiple reference frame (MRF). For the initial condition of the simulation, oil is set on the top part of the tank with 30% of the total fluid volume. The simulation is conducted to get distributions of two-phase flow speed, pressure and volume fraction and to successfully illustrate how the mixing of two-phase components progresses in the stirred tank. The computational results obtained in this study would be useful for explaining the two-phase flow patterns on the mixing process and extending the applications of multiphase stirred reactors.

• 出版日期2008
• 单位华南理工大学