An experimental and numerical study of fluid flow in AOD Nozzles

• A mathematical model of a nozzle used in AOD converters was developed in a previous study. In the work covered in this article, an attempt was made to verify velocity predictions from the nozzle model through a comparison of measurements. Experiments were performed at AGA AB's laboratories using a laser doppler anemometer (LDA) to measure axial velocities at the outlet of a nozzle having the same dimensions as nozzles used in industrial AOD converters. The model predictions agreed well with measured data. An attempt was also made to compare turbulent kinetic energy predictions from the k-ε turbulence model with turbulence predictions calculated using an analytical expression that uses measured velocity fluctuation values. The positive results from this comparison indicate that the model can produce fairly reliable predictions of turbulence at the nozzle outlet. The results from this study are promising regarding use of the nozzle model to calculate boundary condition input values pertaining to the nozzle inlet that will be required for an AOD converter model currently being developed.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)

Keyword

Theoretical study

Oxygen converter

Oxygen steel plant

Steel

Flow(fluid)

Mathematical model

Modeling

Numerical simulation

Metallurgical process and manufacturing engineering

Metallurgisk process- och produktionsteknik

Publication and Content Type

ref (subject category)

art (subject category)