Three-dimensional computational fluid dynamics (CFD) study of the gas–particle circulation pattern within a fluidized bed granulator: By full factorial design of fluidization velocity and particle size
Three-dimensional computational fluid dynamics (CFD) study of the gas–particle circulation pattern within a fluidized bed granulator: By full factorial design of fluidization velocity and particle size
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DOI：
10.1080/07373937.2016.1230628
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发表时间：
2017-04
影响因子：
3.3
通讯作者：
Huolong Liu;Seongkyu Yoon;Mingzhong Li
中科院分区：
文献类型：
--
作者：
Huolong Liu;Seongkyu Yoon;Mingzhong Li
摘要采用欧拉-欧拉双流体模型，通过三维计算流体动力学（CFD）模拟，选择流化速度和平均粒径对流化床制粒机内气粒循环模式的影响进行数值研究。CFD模拟采用全因子设计方法设计，并对所开发的CFD模型进行了实验验证。流化过程达到准稳态。根据流化速度和颗粒平均粒径，分析了气固循环模式和颗粒浓度分布。建立了一个数学模型，为在一次实验中如何改变流化水平提供指导。
ABSTRACT The fluidization velocity and mean particle size were selected to be numerically investigated pertaining to their effects on the gas–particle circulation pattern within a fluidized bed granulator by three-dimensional computational fluid dynamics (CFD) simulation applying an Eulerian–Eulerian two-fluid model. The CFD simulations were designed by full factorial design method and the developed CFD model was experimentally validated. The fluidization process was proved to reach a quasi-steady state. The gas–particle circulation pattern and particle concentration distribution were analyzed based on fluidization velocity and mean particle size. A mathematical model was developed to provide guidance on how to change fluidization level during one experiment.