In this work, five population balance models are applied to the simulation of isothermal bubbly flows, and the results are compared with experimental measurements of pipe flows. The models cover a wide range of different modeling approaches and include several of the most frequently used models for bubbly flow. We find that in the investigated cases, the sectional approach, despite being significantly more computationally expensive, is generally not more accurate than the most accurate moment method included in this work, which is based on a log-normal size distribution. Other moment methods have even lower computational costs, but give unrealistic representations of the bubble size distribution. Additionally, they offer less flexibility and accuracy for modeling break-up and coalescence. This work can be used to make better-informed choices when selecting a population balance model for future multiphase flow research, based on specific requirements in terms of accuracy, computational costs and model complexity.

在这项工作中，五个人口平衡模型被应用于等温气泡流的模拟，并将结果与​​管道流的实验测量结果进行比较。这些模型涵盖了广泛的不同建模方法，包括几种最常用的气泡流模型。我们发现，在调查的案例中，分段方法尽管计算成本明显更高，但通常并不比这项工作中包含的最准确的矩方法更准确，后者基于对数正态大小分布。其他矩量法具有更低的计算成本，但给出了不切实际的气泡大小分布表示。此外，它们为分解和合并建模提供的灵活性和准确性较低。