A time-averaged Eulerian-Eulerian (E-E) multiphase approach for the simulation of boiling flows is presented. A previously developed bubble dynamics model is implemented in the E-E framework as a sub-model to improve the accuracy of the simulations and reduce the case dependency. This mechanistic model, which is based on the balance of forces applied on a single bubble, considers the evaporation of the microlayer underneath the bubble, thermal diffusion and condensation around the bubble cap as well as geometry changes and dynamic inclination and contact angles. The advantage of this model is that it does not require a recalibration of parameters to predict the bubble departure size. However, its implementation in the E-E framework needs an extension of the current nucleation site activation and heat partitioning model. Further on, we use a population balance model in our approach.

中文翻译：

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使用欧拉-欧拉方法对流动沸腾进行建模和模拟，以及气泡动力学和温度相关热分配的集成模型


提出了一种用于模拟沸腾流的时间平均欧拉-欧拉 (E-E) 多相方法。先前开发的气泡动力学模型作为子模型在 E-E 框架中实现，以提高模拟的准确性并减少案例依赖性。该机械模型基于施加在单个气泡上的力的平衡，考虑了气泡下方微层的蒸发、泡罩周围的热扩散和冷凝以及几何变化以及动态倾斜和接触角。该模型的优点是不需要重新校准参数来预测气泡离开尺寸。然而，它在 E-E 框架中的实现需要对当前的成核位点激活和热分配模型进行扩展。此外，我们在我们的方法中使用人口平衡模型。