Abstract Stirred tanks are widely used equipment in process engineering. CFD simulations of such equipment on industrial scales are feasible within the Euler-Euler/RANS approach. In this approach, phenomena on particle scale are not resolved and, accordingly, suitable closure models are required. The present work applies a set of closure relations that originates from a comprehensive review of existing results. Focus is on the modeling of interfacial forces which include drag, lift, turbulent dispersion, and virtual mass. Specifically, new models for the drag and lift forces are considered based on the best currently available description. To validate the model a comprehensive set of experimental data including solid velocity and volume fraction as well as liquid velocity and turbulence has been assembled. The currently proposed model compares reasonably well with this dataset and shows generally better prediction compared with other model variants that originate from different combinations of force correlations.

中文翻译：

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搅拌罐中的固液流动：Euler-Euler / RANS 建模

摘要 搅拌罐是工艺工程中广泛使用的设备。在 Euler-Euler/RANS 方法中，此类设备在工业规模上的 CFD 模拟是可行的。在这种方法中，粒子尺度上的现象没有得到解决，因此需要合适的闭合模型。目前的工作应用了一组源自对现有结果的全面审查的闭合关系。重点是界面力的建模，包括阻力、升力、湍流扩散和虚拟质量。具体来说，阻力和升力的新模型是根据当前可用的最佳描述来考虑的。为了验证该模型，已经组装了一组全面的实验数据，包括固体速度和体积分数以及液体速度和湍流。