Coalescence and Break-Up in Bubble Columns: Euler-Lagrange Simulations Using a Stochastic Approach

被引：13

作者：

Gruber, Michael C. ^{[1
]}

Radl, Stefan ^{[1
]}

Khinast, Johannes G. ^{[1
]}

机构：

[1] Graz Univ Technol, Inst Proc & Particle Engn, A-8010 Graz, Austria

来源：

CHEMIE INGENIEUR TECHNIK | 2013年 / 85卷 / 07期

基金：

奥地利科学基金会;

关键词：

Binary break-up; Bubble column; Bubbly flow; Computational fluid dynamics; Discrete bubble model; Euler-Lagrange; NUMERICAL-SIMULATION; MASS-TRANSFER; SIZE DISTRIBUTIONS; INTERFACIAL AREA; MULTIPHASE FLOW; MODELS; HYDRODYNAMICS; COEFFICIENT; DYNAMICS; REACTORS;

D O I：

10.1002/cite.201300024

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A systematic study of the impact of break-up and coalescence (B&C) on the hydrodynamics in a bubble column is presented. A stochastic approach was chosen for the integration of various B&C kernels into a four-way coupled Euler-Lagrange model. The model is benchmarked against the Deen case, and good agreements were found for the gas holdup and the bubble size distribution. While the results indicate that monodisperse bubbles suffice to correctly forecast the flow features, B&C models are the key to predict the specific interfacial area especially in the lower half of the bubble column.

引用

页码：1118 / 1130

页数：13

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