【作者】 刘明言； 强爱红； 曹长青； 秦秀云； 胡宗定； 李静海； 宋文立； 白蕴茹； 高士秋； 张忠东；

【Author】 LIU Ming-yan, QIANG Ai-hong, CAO Chang-qing, QINXiu-yun, HU Zong-ding LUing-hai, SONGWen-li, BAIYun-ru, GAO Shi-qiu, ZHANG Zhong-dong(1. School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, China; 2. Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, China)

【机构】 天津大学化工学院； 中国科学院过程工程研究所；

【摘要】 将新建的气液固三相流化床能量最小多尺度(EMMS)模型与常用的无固体颗粒气泡尾窝模型、Nacef等给出的基于无固体颗粒气泡尾窝模型的改进模型(1)和改进模型(2)的相含率预测结果进行对比,并与实验数据进行了比较。结果表明,所建三相EMMS模型具有较好的定量预测性能。更多还原

【Abstract】 The model built for the description of the hydrodynamics of gas-liquid-solid fluidized beds with concurrent gas-liquid up-flow is further discussed. It was formulated on the basis of the energy-minimization multi-scale (EMMS) method for gas-solid two-phase flow. The comparison of predictions of gas and liquid holdups between the gas-liquid-solid EMMS model, the bubble-wake model that ignores the existence of solid particles in the wake train and its extensions modified by Nacef et al. is carried out with the experimental data available in literature. The results show that the predictions by using the three-phase EMMS model are in good agreement with experimental data, and that the three-phase EMMS model is more general, more accurate and simpler. It is a good choice for application.更多还原