In our prior study (Schneiderbauer, AIChE J. 2017;63(8):3544–3562), a spatially averaged two‐fluid model (SA‐TFM) was presented, where closure models for the unresolved terms were derived. These closures require constitutive relations for the turbulent kinetic energies of the gas and solids phase as well as for the subfilter variance of the solids volume fraction. We had ascertained that the filtered model do yield nearly the same time‐averaged macroscale flow behavior in bubbling fluidized beds as the underlying kinetic‐theory‐based two‐fluid model, thus verifying the SA‐TFM model approach. In the present study, a set of 3D computational simulations for validation of the SA‐TFM against the experimental data on riser flow and bubbling fluidized beds is performed. Finally, the SA‐TFM predictions are in fairly good agreement with experimental data in the case of Geldart A and B particles even though using very coarse grids. © 2018 The Authors AIChE Journal published by Wiley Periodicals, Inc. on behalf of American Institute of Chemical Engineers AIChE J, 64: 1606–1617, 2018

中文翻译：

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气固两相流空间平均模型的验证研究：II。适用于立管和流化床

在我们先前的研究中（Schneiderbauer，AIChE J. 2017; 63（8）：3544–3562），提出了空间平均的两流体模型（SA-TFM），其中得出了未解决条件的闭合模型。这些封闭需要气相和固相的湍动能以及固相体积分数的子过滤器方差的本构关系。我们已经确定，过滤后的模型在鼓泡流化床中的确能产生与基本的基于动力学理论的双流体模型几乎相同的时间平均宏观流动行为，从而验证了SA-TFM模型方法。在本研究中，针对立管流量和鼓泡流化床的实验数据，对SA-TFM进行了一套3D计算仿真验证。最后，即使使用非常粗糙的网格，对于Geldart A和B粒子，SA-TFM的预测与实验数据也相当吻合。©2018 Wiley Periodicals，Inc.代表美国化学工程师学会出版的《作者AIChE期刊》AIChE J，64：1606-1617，2018