Fundamental Mathematical Modeling of Gas Injection in AOD Converters

A novel mathematical model of gas injection in the AOD converter process has been developed. The model is based on fundamental transport equations and includes separate solutions of both the steel and the gas phases and their coupling by friction. The inlet boundary conditions at the nozzle are pred...

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Bibliographic Details
Published in:ISIJ International 2004/02/15, Vol.44(2), pp.326-333
Main Authors: Tilliander, A., Jonsson, T. L. I., Jönsson, P. G.
Format: Article
Language:English
Subjects:
AOD
Applied sciences
bubbles
CFD
Exact sciences and technology
fluid flow
gas injection
heat-transfer
Iron and steel making
jet
Metallurgical fundamentals
Metals. Metallurgy
modeling
molten iron
nozzle
nozzles
Oxygen or pneumatic steel making
Production of metals
simulation
steel
TECHNOLOGY
TEKNIKVETENSKAP
two-phase
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Description
Summary:A novel mathematical model of gas injection in the AOD converter process has been developed. The model is based on fundamental transport equations and includes separate solutions of both the steel and the gas phases and their coupling by friction. The inlet boundary conditions at the nozzle are predicted using a separate fundamental mathematical model of an AOD nozzle. This approach, together with the two phase solution, avoids the need to guess the inlet boundary conditions. The predicted gas plume has been compared to a plume from a scaled down water model of an AOD nozzle in a qualitative manner. The plume shapes are very similar, which indicates that the model predictions are of the right order of magnitude. The AOD model has also been used to predict fluid flow patterns, turbulence characteristics and bubble diameters.
ISSN:0915-1559
1347-5460
1347-5460
DOI:10.2355/isijinternational.44.326