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- Alexis, Jonas, et al.
(författare)
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A model of an inductively-stirred ladle
- 1997
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Ingår i: Scandinavian journal of metallurgy. - 0371-0459 .- 1600-0692. ; 26:2, s. 48-54
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Tidskriftsartikel (refereegranskat)abstract
- A fully 3-dimensional model for an inductively-stirred ladle is presented. Since the fluid flow during induction stirring is not symmetric with respect to the centre of the ladle, this model gives a more accurate description of the real stirring conditions than more traditional models that use cylindrical or polar co-ordinates. Typical output from the model are steel velocities, turbulent kinetic energy and dissipation of turbulent kinetic energy. The calculated steel velocities agree fairly well with experimental data. © Munksgaard, 1997.
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| 5. |
- Grip, Carl Erik, et al.
(författare)
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Numerical prediction and experimental verification of thermal stratification during holding in pilot plant and production ladles
- 1999
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Ingår i: ISIJ International. - : Iron and Steel Institute of Japan. - 0915-1559 .- 1347-5460. ; 39:7, s. 715-721
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Tidskriftsartikel (refereegranskat)abstract
- A 3-dimensional CFD-model has been developed to simulate the natural convection flow in ladles. Qualified measurements of temperature and velocities in 107 and 7 tonne ladles have been made to verify the model. The downward convection flow at the ladle wall has been studied using radioactive isotopes and the thermal stratification has been studied by means of continuous temperature measurements. The experimental techniques are complex and additional numerical simulations have been carried out to study the effect of the measurement technique on the measurement error. The result indicates that the measurements are of sufficient accuracy for the validation. The measurements are compared to predictions from the numerical model. The main conclusion is that the theoretical CFD model gives a very accurate estimation of the temperature distribution during holding.
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| 10. |
- Jonsson, Lage, et al.
(författare)
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Modeling of the fluid flow conditions around the slag/metal interface in a gas-stirred ladle
- 1996
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Ingår i: ISIJ International. - : Iron and Steel Institute of Japan. - 0915-1559 .- 1347-5460. ; 36:9, s. 1127-1134
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Tidskriftsartikel (refereegranskat)abstract
- A three-phase model of a gas-stirred steel bath covered with a slag layer has been developed. Predicted steel surface velocities have been shown to be in at least five times greater agreement with experimental data compared to predicted velocities from a model which excludes the effect of a slag phase. It has also been shown that it is possible to predict the amount of slag dispersed into the steel.
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