化工进展2026，Vol.45Issue(5)：2562-2571,10.DOI:10.16085/j.issn.1000-6613.2025-0745
四旋静态混合器内气泡聚并破碎行为的CFD-PBM模拟
CFD-PBM simulation of bubble coalescence and breakup behavior in static mixer with four spiral leaves
摘要
Abstract
The bubble coalescence and breakup processes significantly influence the mixing and mass transfer efficiency of static mixers by changing the bubble size distribution.The bubble coalescence and breakup behaviors in the static mixer with four spiral leaves(FKSM)was studied by CFD-PBM coupling method.Based on the experimental data,the prediction results of eight model combinations on the dimensionless Sauter mean diameter(d32/D0)were analyzed.When the Reynolds number(Re)was 18200 and the dispersed phase volume fraction was 0.05,the average deviation between the d32/D0 predicted by Luo-Lehr model and the experimental value was 2.68%compared with other coalescence and breakup models.Furthermore,the variation law of gas holdup and bubble size distribution was revealed,and the influences of the element aspect ratio(Ar)and dimensionless spacing ratio(Gp/D0)on the mixing characteristics were also discussed.The results demonstrated that the radial gas holdup and bubble number density in FKSM showed a bimodal distribution trend.When the Ar was 1.5,the swirling element could optimize the flow path of fluids and effectively promote bubble breakup,and FKSM had better gas-liquid dispersive mixing performance.In terms of energy consumption and mass transfer characteristics,Gp/D0=0.25 performed well.关键词
静态混合器/气液两相流/计算流体力学/群体平衡公式/气含率Key words
static mixer/gas-liquid flow/computational fluid dynamics/population balance equations/gas holdup分类
化学化工引用本文复制引用
禹言芳,项可心,孟辉波,赵砚锋,李雯..四旋静态混合器内气泡聚并破碎行为的CFD-PBM模拟[J].化工进展,2026,45(5):2562-2571,10.基金项目
辽宁省自然科学基金(2024-MS-132) （2024-MS-132）
山东省自然科学基金(ZR2024ME067) （ZR2024ME067）
青岛市科技惠民示范专项项目(25-1-5-xdny-10-nsh) （25-1-5-xdny-10-nsh）
中国石油大学(华东)科研启动基金(R20220113). （华东）
