Characterization of gas-liquid flows in rectangular bubble columns using conductivity probes

被引：24

作者：

Buwa, VV ^{[1
]}

Ranade, VV ^{[1
]}

机构：

[1] Natl Chem Lab, Ind Flow Modeling Grp, Pune 411008, Maharashtra, India

来源：

CHEMICAL ENGINEERING COMMUNICATIONS | 2005年 / 192卷 / 09期

关键词：

bubble column; gas-liquid flows; gas holdup; voidage fluctuations;

D O I：

10.1080/009864490522704

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Unsteady gas-liquid flows in bubble columns are comprised of various flow processes occurring with varying length and time scales and govern mixing and transport processes. In the present work, we have characterized dynamic and time-averaged properties of gas-liquid flows in rectangular bubble columns using conductivity probes. The development of a single-tip conductivity probe, data processing methodology, and photographic validation procedure is discussed in detail. The effect of superficial gas velocity and aerated liquid height-to-width ( H/W) ratio on voidage fluctuations and time-averaged gas holdup was investigated. The experimental data presented here can help in understanding the dynamics of various flow processes and validating computational fluid dynamics based models.

引用

页码：1129 / 1150

页数：22

共 39 条

[1] Single and double optical probes in air-water two-phase flows:: real time signal processing and sensor performance [J].

Barrau, E ;

Rivière, N ;

Poupot, C ;

Cartellier, A .

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 1999, 25 (02) :229-256

[2] Dynamic flow behaviour in bubble columns [J].

Becker, S ;

De Bie, H ;

Sweeney, J .

CHEMICAL ENGINEERING SCIENCE, 1999, 54 (21) :4929-4935

[3] Gas-liquid flow in bubble columns and loop reactors: Part II. Comparison of detailed experiments and flow simulations [J].

Becker, S. ;

Sokolichin, A. ;

Eigenberger, G. .

CHEMICAL ENGINEERING SCIENCE, 1994, 49 (24B) :5747-5762

[4] Gas-filled cavity structures and local void fraction distribution in vessel with dual-impellers [J].

Bombac, A ;

Zun, I .

CHEMICAL ENGINEERING SCIENCE, 2000, 55 (15) :2995-3001

[5] Measuring techniques in gas-liquid and gas-liquid-solid reactors [J].

Boyer, C ;

Duquenne, AM ;

Wild, G .

CHEMICAL ENGINEERING SCIENCE, 2002, 57 (16) :3185-3215

[6] Dynamics of gas-liquid flow in a rectangular bubble column: experiments and single/multi-group CFD simulations [J].

Buwa, VV ;

Ranade, VV .

CHEMICAL ENGINEERING SCIENCE, 2002, 57 (22-23) :4715-4736

[7] Characterization of dynamics of gas-liquid flows in rectangular bubble columns [J].

Buwa, VV ;

Ranade, VV .

AICHE JOURNAL, 2004, 50 (10) :2394-2407

[8]

BUWA VV, 2004, THESIS IIT BOMBAY

[9]

BUWA VV, 2002, 17 INT S CHEM REACT

[10]

BUWA VV, 2001, CHEMCON 2001 CHENN I

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