Experimental study of gas-induced liquid-flow structures in bubble columns

被引：180

作者：

Degaleesan, S ^{[1
]}

Dudukovic, M ^{[1
]}

Pan, Y ^{[1
]}

机构：

[1] Washington Univ, Dept Chem Engn, Chem React Engn Lab, St Louis, MO 63130 USA

来源：

AICHE JOURNAL | 2001年 / 47卷 / 09期

关键词：

D O I：

10.1002/aic.690470904

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The computer-automated radioactive-particle tracking (CARPT) technique is used to investigate liquid recirculation and turbulence in bubble columns. Experiments are conducted in air-water bubble columns of different sizes, with various gas distributors, and operated over a range of superficial gas velocities. This study covers gas-liquid flows front the bubbly regime to the churn turbulent regime. The time-averaged spatial flow structure, axial liquid velocity profiles, Reynolds shear stress, and turbulence intensities profiles are analyzed for different columns and flow conditions. Supplemental, experiments, using the hot-probe anemometry technique, are performed at selected flow conditions, and the results are compared with the corresponding ones front CARPT measurements. The Reynolds stress determined by CARPT was compared with that obtained by hot-film anemometry in an independent investigation by Menzel ct al. (1990).

引用

页码：1913 / 1931

页数：19

共 62 条

[11]

DEVANATHAN N, 1991, THESIS WASHINGTON U

[12] MATHEMATICAL-MODELING OF 2-PHASE FLOW [J].

DREW, DA .

ANNUAL REVIEW OF FLUID MECHANICS, 1983, 15 :261-291

[13] Multiphase reactors - revisited [J].

Dudukovic, MP ;

Larachi, F ;

Mills, PL .

CHEMICAL ENGINEERING SCIENCE, 1999, 54 (13-14) :1975-1995

[14]

DUDUKOVIC MP, 1991, REV I FRANCAIS PETRO, V46, P493

[15]

Fan L.S., 1989, GAS LIQUID SOLID FLU

[16]

Franz K., 1984, GER CHEM ENG, V7, P365

[17]

GEARY N, 1992, AICHE J, V33, P575

[18] INVESTIGATIONS AND MODELING OF BUBBLE-COLUMNS [J].

GRIENBERGER, J ;

HOFMANN, H .

CHEMICAL ENGINEERING SCIENCE, 1992, 47 (9-11) :2215-2220

[19] Coherent structures and axial dispersion in bubble column reactors [J].

Groen, JS ;

Oldeman, RGC ;

Mudde, RF ;

VandenAkker, HEA .

CHEMICAL ENGINEERING SCIENCE, 1996, 51 (10) :2511-2520

[20]

GROEN JS, 1995, CHEM ENG RES DES, V73, P615

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