文献类型：期刊文献

英文题名：CFD Simulation of Average and Local Gas-Liquid Flow Properties in Stirred Tank Reactors with Multiple Rushton Impellers

作者：Pan, Ao[1];Xie, Minghui[1];Li, Chao[1];Xia, Jianye[1];Chu, Ju[1];Zhuang, Yingping[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China

年份：2017

卷号：50

期号：12

起止页码：878

外文期刊名：JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

收录：;EI(收录号：20181004854397);WOS:【SCI-EXPANDED(收录号:WOS:000418333300001)】；

基金：The authors would like to acknowledge the support from Project 21506052 supported by National Natural Science Foundation of China, and Project 222201414037 supported by the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Gas-Liquid; Stirred Tank; Hydrodynamics; Population Balance Model; Inter-Phase Forces

摘要：In this article, computational investigation of the gas-liquid flow in stirred tank with multiple Rushton impellers was carried out. Experimental results of average and local details of gas-liquid flow characters were reported, including gas-holdup, bubble Sauter diameter, specific area and mass transfer coefficient. Thoroughly interphase momentum transfer models including drag and non-drag models were investigated, together with four mass transfer coefficient models using commercial CFD software ANSYS CFX 12.0. Among the drag models tested, the modified Brucato model showed more accurate results than others, while non-drag models showed slight effects on the average flow and local flow characters. For accurate local flow simulation, the population balance model (PBM) showed quite sensitive effect on the local gas distribution. Simulation of interphase mass transfer with eddy cell model showed the most agreement with experimental measured data. Additionally, two advection schemes were employed and compared with each other to test their ability to get more accurate simulation result.