LARGE-SCALE MEASUREMENTS OF THE PHYSICAL CHARACTERISTICS OF ROUND VERTICAL BUBBLE PLUMES IN LIQUIDS

被引：55

作者：

CASTELLOBRANCO, MASC ^{[1
]}

SCHWERDTFEGER, K ^{[1
]}

机构：

[1] TECH UNIV CLAUSTHAL, INST ALLGEMEINE MET, D-38678 CLAUSTHAL ZELLERFELD, GERMANY

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE | 1994年 / 25卷 / 03期

关键词：

D O I：

10.1007/BF02663385

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The hydrodynamics of air/water plumes in a large-scale model of a metallurgical ladle were investigated. The dimensions of the cylindrical vessel were 1600-mm ID and 2250-mm total height. The air was injected through a centered nozzle. Axial and radial profiles of gas concentration, bubble frequency, and liquid and gas velocities were measured using electrical resistivity probes and a propeller flowmeter. It was found that the bubble plume is not at a fixed position but wanders away from the vertical vessel axis. This causes difficulties in the measurements, and special methods have to be designed to define and deduce reproducible values for the characteristic plume quantities. In the analysis of the data, the various physical characteristics were related to z0, the distance from the nozzle where the axial gas concentration is 50 pct. The maximum values of the radial profiles are presented in nondimensional correlations.

引用

页码：359 / 371

页数：13

共 33 条

[1]

AKAGAWA K, 1964, B JSME, V72, P123

[2]

BARCZEWSKI B, 1979, NEUE MESSVERFAHREN W

[3] MEASURING TECHNIQUES FOR 2-PHASE FLOW [J].

BARTHELS, H .

CHEMIE INGENIEUR TECHNIK, 1968, 40 (11) :530-&

[4]

CARRARD G, 1971, P INT S 2 PHASE SYST, P405

[5]

CASTELLOBRANCO MAS, 1988, THESIS TU CLAUSTHAL

[6] MEASUREMENT OF PHYSICAL CHARACTERISTICS OF BUBBLES IN GAS-LIQUID PLUMES .2. LOCAL PROPERTIES OF TURBULENT AIR-WATER PLUMES IN VERTICALLY INJECTED JETS [J].

CASTILLEJOS, AH ;

BRIMACOMBE, JK .

METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY, 1987, 18 (04) :659-671

[7] PHYSICAL CHARACTERISTICS OF GAS JETS INJECTED VERTICALLY UPWARD INTO LIQUID-METAL [J].

CASTILLEJOS, AH ;

BRIMACOMBE, JK .

METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY, 1989, 20 (05) :595-601

[8] MEASUREMENT OF PHYSICAL CHARACTERISTICS OF BUBBLES IN GAS-LIQUID PLUMES .1. AN IMPROVED ELECTRORESISTIVITY PROBE TECHNIQUE [J].

CASTILLEJOS, AH ;

BRIMACOMBE, JK .

METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY, 1987, 18 (04) :649-658

[9]

Dukler A.E., 1986, MULTIPHASE SCI TECHN, V2

[10] DIMENSIONAL ANALYSIS OF THE VERTICAL HETEROGENEOUS BUOYANT PLUME [J].

EBNETH, G ;

PLUSCHKELL, W .

STEEL RESEARCH, 1985, 56 (10) :513-518

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