LI Miaomiao， XU Jun， WANG Xin， XU Qing
（College of Mechanical Engineering； Tianjin Key Laboratory of Integrated Design and On-line Monitoring for Light Industry & Food Machinery and Equipment， Tianjin University of Science and Technology， Tianjin 300222， China）
Abstract：In order to realize the uniform coating, the flow field of spray freeze fluidized bed and the agglomeration characteristics of the particles need to be made a further investigation. The atomization behavior of droplets in the fluidized bed was simulated based on the population balance model (PBM) in CFD, and the results were compared with those of the discrete phase model (DPM) . The results show that PBM and DPM can be used to obtain the same velocity field distribution and PBM can be used to obtain a more detailed particle size distribution. Therefore, PBM can be used as an alternative model of DPM to further investigate the coalescence and fragmentation behavior of particles.
Keywords: population balance model; discrete phase model; particle size distribution; spray-freezing
文章编号：1008-5548（2018）01-0046-06
DOI：10.13732/j.issn.1008-5548.2018.01.009
收稿日期：2017-08-15， 修回日期：2017-10-01，在线出版时间：2018-02-25。
基金项目：国家自然科学基金项目，编号 ：21506163，31571906
第一作者简介：李苗苗（1992—），女，硕士研究生，研究方向为浓缩干燥与粉体工程技术。E-mail：miaomiaolilly@163.com。
通信作者简介：徐庆（1983—），男，博士，讲师，硕士生导师，研究方向为喷雾冷冻干燥技术。E-mail：xuqing@tust.edu.cn。
