A study of adiabatic two-phase flows using the two-group interfacial area transport equations with a modified two-fluid model

作者：Lee D Y; Liu Y; Hibiki T; Ishii M^*; Buchanan J R Jr

来源：International Journal of Multiphase Flow, 2013, 57: 115-130.

DOI：10.1016/j.ijmultiphaseflow.2013.07.008

• Two-fluid model
• Interfacial area transport equation
• Coalescence
• Breakup
• Two group bubbles
• CFD

The dynamic development of interfacial structure in two-phase flows has been studied by using the interfacial area transport equations with various bubble interaction mechanisms. The two-group interfacial area transport equations are incorporated into a multiphase computational fluid dynamics code in the framework of the two-fluid model which is modified to use a combined gas momentum equation for two groups of bubbles. A benchmark is performed for adiabatic churn-turbulent and cap-turbulent flows in a confined vertical rectangular duct (20 cm x 1 cm) with newly developed hydrodynamic models for lift and bubble-induced turbulent diffusion forces as well as the bubble-induced turbulence. The benchmark results demonstrate improved predictive capability of the two-fluid model with these hydrodynamic models and the two-group interfacial area transport equations.

• 出版日期2013-12