Supersonic Lance Mass Transfer Modelling

Aki Kärnä; Mika Järvinen; Timo Fabritius

doi:10.4028/www.scientific.net/MSF.762.686

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HomeMaterials Science ForumMaterials Science Forum Vol. 762Supersonic Lance Mass Transfer Modelling

Supersonic Lance Mass Transfer Modelling

Abstract:

Numerical models of steelmaking processes are essential tools for process development and optimisation. A usable model is detailed enough to provide reliable results and not to slow to run. In order to make a fast and accurate model of a single process, all model parameters must be known well. This can be achieved by first simulating detailed models from which the parameters are obtained.In many converter processes oxygen is delivered into melt by supersonic top lance blowing. When such process is modeled, a model describing mass transfer from the lance into melt surface is needed.This paper describes numerical modeling of mass transfer by supersonic lances. Lance flow CFD models are used to determine mass transfer coefficients for typical lance applications. Models are validated with supersonic nozzle data and wall impinging jet mass transfer data from literature. The results are later used in fast process simulation models.

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Periodical:

Materials Science Forum (Volume 762)

Pages:

686-690

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.762.686

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Online since:

July 2013

Authors:

Aki Kärnä, Mika Järvinen, Timo Fabritius

Keywords:

Computational Fluid Dynamics (CFD), Heat Transfer, Mass Transfer, Supersonic Lance

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