# Mathematical modelling of a compressible oxygen jet interfacing with a free surface in a basic oxygen furnace for steel production

Pericleous, Koulis, Lebon, Bruno, Djambazov, Georgi and Patel, Mayur (2012) *Mathematical modelling of a compressible oxygen jet interfacing with a free surface in a basic oxygen furnace for steel production.* In: Nastac, Laurentiu, Zhang, Lifeng, Thomas, Brian G., Sabau, Adrian, El-Kaddah, Nagy, Powell, Adam C. and Combeau, Herve, (eds.) CFD Modeling and Simulation in Materials Processing. John Wiley & Sons, Inc., Hoboken, NJ, USA, pp. 287-294. ISBN 9781118296158 (doi:10.1002/9781118364697.ch34)

## Abstract

High speed compressible jets are used in a number of steel-making applications. In the case of the BOF, a compressible oxygen jet reacts with a carbon-rich iron bath to reduce carbon levels and produce steel. The intensity of the process is governed by the speed of the jet and by the size and shape of the depression created in the metal and slag by the force of the jet, i.e. by the corresponding free surface. This is a difficult CFD problem, since there are compressible and incompressible regions in the flow domain, which need to be handled differently in a finite volume (FV) pressure-correction scheme. Also, standard turbulence models do not account for compressibility, or the large difference in density between the cold oxygen jet and the hot reacting surroundings. Corrections are introduced to the k-ε model to remedy this deficiency and the results are validated against experimental data. The compressible/incompressible boundary is handled through a transition region, based on Mach number.

Item Type: | Book Section |
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Additional Information: | [1] In Part VII: Modeling of Steelmaking Processes. [2] ISBN: 9781118296158 (print); 9781118364697 (online). [3] Published in: CFD Modeling and Simulation in Materials Processing. Proceedings of a symposium sponsored by Association for Iron and Steel Technology and the Process Technology and Modeling Committee of the Extraction and Processing Division and the Solidification Committee of the Materials Processing and Manufacturing Division of TMS (The Minerals, Metals & Materials Society). Held during the TMS 2012 Annual Meeting & Exhibition Orlando, Florida, USA. March 11-15, 2012. Edited by Laurentiu Nastac, Lifeng Zhang, Brian G. Thomas, Adrian Sabau, Nagy El-Kaddah, Adam C. Powell, Hervé Combeau. [4] Paper, within the Modeling of Steelmaking Processes Section, was originally presented at the CFD Modeling and Simulation in Materials Processing: Modeling of Steelmaking Processes Symposium on Thurs 15th March at 2012 TMS 141st Annual Meeting & Exhibition (The Minerals, Metals & Materials Society), March 11-15, 2012, Orlando Florida, USA. |

Uncontrolled Keywords: | compressible flow, interface capturing, gas and liquid algorithm, steelmaking |

Subjects: | Q Science > QA Mathematics T Technology > T Technology (General) |

School / Department / Research Groups: | School of Computing & Mathematical Sciences Faculty of Architecture, Computing & Humanities > School of Computing & Mathematical Sciences School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis > Computational Science & Engineering Group Faculty of Architecture, Computing & Humanities > School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis > Computational Science & Engineering Group |

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Last Modified: | 21 Jan 2015 12:03 |

URI: | http://gala.gre.ac.uk/id/eprint/7861 |

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