化工学报2016，Vol.67Issue(7)：2732-2739,8.DOI:10.11949/j.issn.0438-1157.20160006
基于 EMMS 模型的搅拌釜内气液两相流数值模拟
Numerical simulation of gas-liquid flow in stirred tanks based on EMMS model
摘要
Abstract
3D Eulerian-Eulerian model was applied to simulate the flow in a gas-liquid stirred tank. Simulation results with different drag models were evaluated at the discharge flow region. CFD simulation could correctly predict the liquid velocity distribution around the impeller, but the traditional Schiller-Naumann drag model under-estimates the drag force, leading to the relatively lower gas holdup at the region under the impellers and gas distributor. The DBS-Global drag model derived from the gas-liquid EMMS model could obtain more reasonable gas holdup distribution at the complete dispersion regime and significantly improved the prediction accuracy of the gas holdup distribution at the discharge flow region.关键词
搅拌釜/气液两相流/计算流体力学/曳力/数值模拟Key words
stirred tank/gas-liquid flow/CFD/drag force/numerical simulation分类
化学化工引用本文复制引用
肖颀,杨宁..基于 EMMS 模型的搅拌釜内气液两相流数值模拟[J].化工学报,2016,67(7):2732-2739,8.基金项目
国家自然科学基金项目（91434121）；国家科技支撑计划项目（2013BAC12B01）；中国科学院战略先导项目（XDA07080301）。@@@@supported by the National Natural Science Foundation of China (91434121), the Ministry of Science and Technology of China (2013BAC12B01) and the Chinese Academy of Sciences (XDA07080301) （91434121）
