A mesoscale approach for population balance modeling of bubble size distribution in bubble column reactors
Yang, Ning; Xiao, Qi
Conference Name13th International Conference on Gas-Liquid and Gas-Liquid-Solid Reactor Engineering (GLS)
Source PublicationArticle; Proceedings Paper
Conference DateAUG, 2017
Conference PlaceBrussels, BELGIUM

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.

KeywordBubble 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
WOS IDWOS:000407655100024
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Document Type会议论文
Recommended Citation
GB/T 7714
Yang, Ning,Xiao, Qi. A mesoscale approach for population balance modeling of bubble size distribution in bubble column reactors[C],2017:241.
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