A model of breakup of a rising bubble in a turbulent flow

被引：10

作者：

Eskin, D. ^{[1
,2
]}

Meretskaya, E. ^{[2
]}

Vikhansky, A. ^{[3
]}

机构：

[1] Univ West Indies, St Augustine, Trinidad Tobago

[2] Skolkovo Inst Sci & Technol, Nobel St 3, Moscow 121205, Russia

[3] Siemens Digital Ind Software, Basil Hill Rd, Didcot OX11 7HJ, Oxon, England

来源：

CHEMICAL ENGINEERING SCIENCE | 2020年 / 226卷

关键词：

Bubble rising; CFD; A-MuSiG; Specific breakup rate; Turbulence; Weber number; SINGLE BUBBLES; 2-PHASE FLOW; DRAG; COALESCENCE; DISPERSION; SIMULATION; DROPLET; SIZE;

D O I：

10.1016/j.ces.2020.115846

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Breakup of a bubble, rising under gravity in a turbulent flow, is analyzed. A model developed represents the critical Weber number of a bubble, indicating bubble breakup conditions, as a function of deformation caused by bubble rising. An ellipsoidal bubble shape is assumed. A simplified model of bubble deformation allows to obtain an analytical expression for the critical Weber number. An equation for the sepcific breakup rate of a rising bubble is also suggested and, then, validated against experimental data. The model developed is incorporated into the developer's version of the adaptive multiple size-group (A-MuSiG) method of the Simcenter STAR-CCM+ (R) CFD code. A good agreement of computed data vs. experimental results is demonstrated for a bubbly flow in a horizontal pipe without tuning any adjustable parameters. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：12

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