CFD-PBM simulation of bubble columns: Effect of parameters in the class method for solving PBEs
CFD-PBM simulation of bubble columns: Effect of parameters in the class method for solving PBEs
复制标题
泡罩塔的 CFD-PBM 模拟：求解 PBE 的类方法中参数的影响
DOI：
10.1016/j.ces.2020.115853
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发表时间：
2020-11
影响因子：
4.7
通讯作者：
Zheng-Hong Luo
中科院分区：
文献类型：
--
作者：
Xi-Bao Zhang;Ru-Qiu Zheng;Zheng-Hong Luo
The class method (CM) has been frequently applied in solving population balance equations (PBEs) for the CFD-PBM simulation of bubble columns. There are four parameters in the CM: the volume ratio between successive bubble classes (rv), the minimum diameter (dmin), the maximum diameter (dmax) and the critical diameter (dc) that is used to distinguish small bubbles and large bubbles. These parameters have a significant impact on the computational precision and efficiency. In this work, numerical simulations are performed to investigate the effects of these parameters on the simulation of two typical bubble columns operated at heterogeneous regime. The simulation results quantitatively present the influences of these parameters on the simulated local gas holdup and global bubble size distribution. The simulated radial profiles of gas holdup at different heights are compared with experimental data. The optimized scheme for the values of these parameters in the CM is proposed.
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