A new multi‐scale model based on CFD and macroscopic calculation for corrugated structured packing column
A new multi‐scale model based on CFD and macroscopic calculation for corrugated structured packing column
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DOI：
10.1002/aic.14082
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发表时间：
2013-08
期刊：
影响因子：
3.7
通讯作者：
Baochang Sun;L. He;B. Liu;F. Gu;C. J. Liu
中科院分区：
文献类型：
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作者：
Baochang Sun;L. He;B. Liu;F. Gu;C. J. Liu
提出了一种将计算流体力学（CFD）和宏观计算方法相结合的多尺度方法来预测波纹规整填料塔内的流体力学行为。在代表单元概念的基础上，将规整填料的三维VOF模型应用于小尺度模拟中，计算了流体分流系数和有效润湿面积比。单元网络模型是一种力学模型，在小尺度计算结果的基础上进行大尺度计算。该多尺度方法可以得到整个塔内的持液率分布。将模拟结果与我们以前工作的实验数据进行了比较，以验证本模型。多尺度模型在化工填料塔的分析和设计中具有广阔的应用前景。© 2013美国化学工程师学会AIChE J，59：3119-3130，2013
A multi-scale approach with the combination of computational fluid dynamic (CFD) and macroscopic calculation methods has been proposed to predict the hydrodynamics behavior in the corrugated structured packing column. On the basis of the concept of the representative unit, the three-dimensional (3-D) volume of fluid (VOF) model of the structured packing is applied in the small scale simulation, and the stream split fraction coefficients and effective wetted area ratio are calculated. The unit network model, which is a mechanistic model, is applied in large scale calculation basing on the small scale results. The liquid holdup distribution in the entire column can be available by this multi-scale method. A comparison between the simulation results and the experimental data of our previous work is given to validate the present model. The multi-scale model is proved to be prospective to assist the analysis and design of structure packing columns in chemical engineering. © 2013 American Institute of Chemical Engineers AIChE J, 59: 3119–3130, 2013