Community Research and Development Information Service - CORDIS


Fluid flow phenomena in steelmaking have a substantial impact on product quality and process performance. However, measurement or visualization of the flow phenomena in actual steelmaking processes is difficult and expensive. In this field experiments on water models and numerical simulation so the flow phenomena are useful techniques to enhance our understanding of process performance.
This report gives an overview of the ECSC-R&D project aimed at describing the fluid flow phenomena in a steel converter using"computational Fluid Dynamics". Three-dimensional numerical models of multi-phase fluid flow have been developed, based on the basic laws of conservation of mass and momentum. These models have been used to investigate the complex phenomena of multi-phase flow in the metal bath of the BOF. Dispersed bubble flow from the bottom stirring equipment is handled using a so called 'mixture model' which calculates the transport of the has and the interaction between the metal flow and the gas bubbles. The stirring effect caused by the impinging oxygen jets is incorporated in the models. Turbulent flow effects are handled by a standard turbulence model.
Experimental data from water models has been used to aid model development and to validate the simulations. Predictions with the model show reasonable agreement with measurements and observations in the water model of the BOF.
Parameter studies with the models were carried out to investigate the influence of process design on the mixing in the metal bath of the BOF.
The developed models are widely applicable to multi-phase fluid flow phenomena in steelmaking. Possible different applications ore in the field of secondary steelmaking and casting. Hoogovens currently uses the models extensively in optimizing the flow in the mould of a continuous caster and in the development of smelting reduction technology (CCF).

Additional information

Authors: SCHULTE H B M, Koninklijke Hoogovens NV, Ijmuiden (NL)
Bibliographic Reference: EUR 18627 EN (1999) 41pp.
Availability: Available from OOPEC Sales agents
ISBN: ISBN 92-828-5047-1
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