The present research aims to assess and analyze one-dimensional two-fluid models used in simulating gas-liquid dynamics and interphase transfers in degassing columns. The assessment of two-fluid models is based on benchmark measurement data carried out over a long period of time, both on dissolved gas concentrations in Lake Nyos at different depths and on the gas-liquid jet heights at the outlet of the degassing columns installed from 2001. The results of the numerical simulations with different two-fluid models were compared and their confrontation with the experimental data were discussed with respect to the sensitivity of the models to the different closures and hypotheses. The numerical analysis has led to a benchmark assessment of mono-dimensional two-fluid models in their capacity to account for the complexities associated with the different couplings between the dynamic aspects and interphase mass transfer phenomena that occur in degassing columns.

本研究旨在评估和分析用于模拟脱气塔中气液动力学和相间转移的一维两流体模型。两种流体模型的评估是基于长时间内进行的基准测量数据，包括不同深度的尼约斯湖中的溶解气体浓度以及安装在该塔上的脱气塔出口处的气液射流高度。 2001。比较了不同双流体模型的数值模拟结果，并就模型对不同闭合和假设的敏感性讨论了它们与实验数据的对立。