A statistical model for the average volume fraction profile through the mixing zone in turbulent stratified gas-liquid flow

作者：Skartlien R^*; Hu B; Palmer T L; Staff G; Sollum E

来源：International Journal of Multiphase Flow, 2014, 59: 160-172.

DOI：10.1016/j.ijmultiphaseflow.2013.11.002

• Entrainment
• Turbulence
• Interfaces
• Dispersions
• Two-phase stratified pipe flow

A phenomenological model was developed for the average volume fraction profile through the mixing zone between turbulent gas and liquid in horizontal, layered flow. A probability distribution (PDF) of the height of the interface was defined in terms of a ratio between the interfacial energy (system energy) and the turbulent kinetic energy (driving energy), representing an analogy to the Boltzmann distribution in statistical physics. A potential advantage with this modelling approach is that it offers an alternative to (often inaccurate) entrainment correlations that are used in boundary conditions for dispersion models. A unified PDF and dispersion model was tested against X-ray tomography data, with satisfactory results.

• 出版日期2014-2