文献类型：期刊文献

英文题名：A pseudo-3D model with 3D accuracy and 2D cost for the CFD-PBM simulation of a pilot-scale rotating disc contactor

作者：Chen, Hang[1];Sun, Ze[1];Song, Xingfu[1];Yu, Jianguo[1]

机构：[1]E China Univ Sci & Technol, Natl Engn Res Ctr Integrated Utilizat Salt Lake R, Shanghai 200237, Peoples R China

年份：2016

卷号：139

起止页码：27

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20154201385665);WOS:【SCI-EXPANDED(收录号:WOS:000365058100003)】；

基金：We acknowledge the financial support from the National Natural Science Foundation of China under Grant no. 21206038, a Specialized Research Fund for the Doctoral Program of High Education for New Lectures under Grant 20120074120014, and the Fundamental Research Funds for the Central Universities under Grant WB1414046.

语种：英文

外文关键词：Rotating disc contactor; CFD-PBM simulation; Pseudo-3D model; Calculation efficiency

摘要：In this study, the computational fluid dynamics-population balance model (CFD-PBM) was developed for a five-compartment pilot-scale rotating disc contactor (RDC) using the solving methods of finite volume method (FVM) and quadrature method of moments (QMOM) as implemented in Fluent 14.0. The differences between a simplified two-dimensional (2D) axisymmetric swirl model and a full three-dimensional (3D) model were investigated, and a pseudo-three-dimensional (pseudo-3D) model was developed to combine the benefits of both the 2D and 3D frameworks. The comparison results of the velocity distributions, droplet mean diameter and turbulent dissipation rate indicated that the 3D approach was suitable for quantitative investigations, whereas the 2D axisymmetric swirl model had only qualitative predictive capabilities. The differences are probably attributed to the 2D framework ignoring the cylindrical geometry characteristics of the problem. Based on this knowledge, a pseudo-3D model was proposed by constructing a fan-shaped geometry to overcome this disadvantage, and a parametric study was conducted to determine the angle of the sector. The results showed that the pseudo-3D model had nearly the same computational accuracy as the full 3D simulation, which verified the approach. Moreover, the sector angle had almost no effect on the simulated results, and only two layers of grids in the tangential direction were sufficient. Thus, the pseudo-3D model was found to be a powerful tool with computational costs approximate to those of the 2D framework, but with a calculation accuracy near that of the 3D model. (C) 2015 Elsevier Ltd. All rights reserved.