文献类型：期刊文献

英文题名：Modelling of mass transfer for gas-liquid two-phase flow in bubble column reactor with a bubble breakage model considering bubble-induced turbulence

作者：Shi, Weibin[1];Yang, Xiaogang[1];Sommerfeld, Martin[2];Yang, Jie[3];Cai, Xinyue[1];Li, Guang[1];Zong, Yuan[2,4]

机构：[1]Univ Nottingham Ningbo China, Dept Mech Mat & Mfg Engn, Univ Pk, Ningbo 315100, Zhejiang, Peoples R China;[2]Otto von Guericke Univ, Fac Proc & Syst Engn, Zeppelinstr 1, D-06130 Magdeburg, Germany;[3]Univ Nottingham Ningbo China, Sch Math Sci, Univ Pk, Ningbo 315100, Zhejiang, Peoples R China;[4]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2019

卷号：371

起止页码：470

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20191606794960);WOS:【SCI-EXPANDED(收录号:WOS:000467042200051)】；

基金：This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 21761132026, 91534118). Weibin Shi and Xinyue Cai would also like to acknowledge the PhD scholarship of the International Doctoral Innovation Centre (IDIC) of the University of Nottingham Ningbo China and the support of EPSRC (Grant no. EP/G037345/1).

语种：英文

外文关键词：CFD-PBM modelling; Gas-liquid two-phase flow; Bubble column reactor; Bubble breakage model; Bubble-induced turbulence; Turbulence energy spectrum

摘要：A quantitative description of the interaction between the turbulence eddies and bubble groups is crucial for the prediction of the bubble size distribution in bubble columns when adopting the population balance model (PBM) to estimate the heat and mass transfer across the interfaces between bubbles and carrier liquid. The majority of breakage kernels that are currently adopted focus on the shear turbulence in the liquid phase and model the kinetic energy contained in the arrival eddies that hit the bubbles by using the classical single-phase turbulence Kolmogorov -5/3 scaling law. In bubble columns, eddies that collide with bubbles and cause the bubble breakage are mainly generated by bubble-induced turbulence (BIT). The present work focuses on the influence of kappa(-3) scaling of the bubble-induced turbulence energy spectrum on the bubble breakage due to the eddy-bubble collision in bubble columns. A modified breakage model accounting for the bubble-induced turbulence is proposed. The proposed breakage model considers the mean turbulent velocity of eddies under the influence of bubble-induced turbulence and the characteristic wavenumber/length scale that corresponds to BIT. A comparison of the simulation results with the experimental data clearly demonstrate that the modified breakage model appropriately describes the bubble breakage events occurring under the influence of bubble-induced turbulence in bubble columns. It is also shown that the interaction of bubbles with the bubble-induced turbulence eddies has an impact on prediction of the mass transfer in bubble column flows.