A mesoscale approach for population balance modeling of bubble size distribution in bubble column reactors | |
Yang, Ning; Xiao, Qi | |
2017 | |
会议日期 | AUG, 2017 |
会议地点 | Brussels, BELGIUM |
关键词 | Bubble Size Distribution Cfd Simulation Population Balance Equation Break-up Mesoscale Numerical-simulation Coalescence Regime Transition Breakage Energy-spectrum Computational Fluid Dynamics Stability Condition 2-phase Flow Coalescence Drop Liquid |
卷号 | 170 |
期号 | SI |
DOI | 10.1016/j.ces.2017.01.026 |
页码 | 241 |
英文摘要 | Prediction of bubble size distribution is of paramount importance for the study of bubble column reactors. Current kernel functions for coalescence or breakage in CFD-PBM simulation are usually derived from the isotropic turbulence theory and overestimate bubble size distribution with increasing gas flow rate. Based on the energy-minimization multi-scale concept, we develop a new approach to calculate the coalescence rate through the so-called stability condition and the meso-scale energy dissipation relevant to bubble breakage and coalescence (Yang et al., 2010). The approach is independent of specific kernel functions, and provides a new constraint to the kernel functions of coalescence or breakage which were previously only related to the turbulence properties through isotropic turbulence theory. New correctors for coalescence rate could then be derived for various kernel models. Our simulation indicates that this new approach can adapt to different coalescence or breakage kernel function models, and can achieve better prediction for bubble size distribution. (C) 2017 Elsevier Ltd. All rights reserved. |
会议录 | Article; Proceedings Paper |
语种 | 英语 |
WOS记录号 | WOS:000407655100024 |
内容类型 | 会议论文 |
源URL | [http://ir.ipe.ac.cn/handle/122111/28950] |
专题 | 中国科学院过程工程研究所 |
推荐引用方式 GB/T 7714 | Yang, Ning,Xiao, Qi. A mesoscale approach for population balance modeling of bubble size distribution in bubble column reactors[C]. 见:. Brussels, BELGIUM. AUG, 2017. |
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