Large Eddy Simulation of Bubble Column Bubbly Flow Considering Subgrid-Scale Turbulent Diffusion Effects and Bubble Oscillation

被引：1

作者：

Long, Shanshan ^{[1
]}

Yang, Xiaogang ^{[1
]}

Yang, Jie ^{[2
]}

Sommerfeld, Martin ^{[3
]}

Xue, Chenyang ^{[1
]}

机构：

[1] Univ Nottingham Ningbo China, Dept Mech Mat & Mfg Engn, Univ Pk, Ningbo 315100, Peoples R China

[2] Univ Hull, Sch Nat Sci, Kingston Upon Hull HU6 7RX, England

[3] Otto von Guericke Univ, Fac Proc & Syst Engn, Zeppelinstr 1, D-06130 Halle An Der Saale, Germany

来源：

CHEMICAL ENGINEERING & TECHNOLOGY | 2023年 / 46卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Added mass stress; Bubble columns; Large eddy simulations; Mass transfer; Turbulent dispersions; GAS-LIQUID FLOW; DYNAMICS; HYDRODYNAMICS; REACTOR; MODEL;

D O I：

10.1002/ceat.202300142

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Through Euler/Euler large eddy simulation (LES) modeling, it is demonstrated that turbulent dispersion of bubbles can effectively indicate the impact of turbulent eddies on the bubble dynamics, i.e., the bubble oscillation behavior. This finding builds on previous work using the Euler/Lagrange LES modeling approach and leads to a significant improvement in predicting bubble lateral dispersion. Spatially filtered terms were proposed for the subgrid-scale (SGS) turbulent dispersion and added mass stress force models, with a modification made to the SGS eddy viscosity to reflect bubble turbulent dispersion and oscillations. The proposed model substantially improves the prediction of bubble volume fraction distribution, bubble and liquid phase velocity profiles, the turbulent kinetic energy spectrum, and mass transfer.

引用

页码：1791 / 1799

页数：9

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