文献类型：期刊文献

英文题名：Numerical Simulation of Gas-Liquid Flow in a Stirred Tank with Swirl Modification

作者：Zhang, Yanhong[1,2];Yong, Yumei[1];Mao, Zai-Sha[1];Yang, Chao[1];Sun, Haiyan[1];Wang, Hualin[2]

机构：[1]Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China;[2]E China Univ Sci & Technol, Inst Pressure Vessel & Proc Equipment, Shanghai 200237, Peoples R China

年份：2009

卷号：32

期号：8

起止页码：1266

外文期刊名：CHEMICAL ENGINEERING & TECHNOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000269231700016)】；

语种：英文

外文关键词：Gas-liquid flow; Numerical simulation; Stirred tank; Swirl flow

摘要：Although the standard k-epsilon model is most frequently used for turbulence modeling, it often leads to poor results for strongly swirling flows involved in stirred tanks and other processing devices. In this work, a swirling number, R-s, is introduced to modify the standard k-epsilon model. A Eulerian-Eulerian model is employed to describe the gas-liquid, two-phase flow in a baffled stirred tank with a Rushton impeller. The momentum and the continuity equations are discretized using the finite difference method and solved by the SIMPLE algorithm. The inner-outer iterative algorithm is used to account for the interaction between the rotating impeller and the static baffles. The predictions, both with and without R-s corrections, are compared with the literature data, which illustrates that the swirling modification could improve the numerical simulation of gas-liquid turbulent flow in stirred tanks.