Coupling of CFD and PBE Calculations to Simulate the Behavior of an Inclusion Population in a Gas-Stirring Ladle View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2013-09-13

AUTHORS

Jean-Pierre Bellot, Valerio De Felice, Bernard Dussoubs, Alain Jardy, Stéphane Hans

ABSTRACT

Gas-stirring ladle treatment of liquid metal has been pointed out for a long time as the processing stage is mainly responsible for the inclusion population of specialty steels. A steel ladle is a complex three-phase reactor, where strongly dispersed inclusions are transported by the turbulent liquid metal/bubbles flow. We have coupled a population balance model with CFD in order to simulate the mechanisms of transport, aggregation, flotation, and surface entrapment of inclusions. The simulation results, when applied to an industrial gas-stirring ladle operation, show the efficiency of this modeling approach and allow us to compare the respective roles of these mechanisms on the inclusion removal rate. The comparison with literature reporting data emphasizes the good prediction of deoxidating rate of the ladle. On parallel, a simplified zero-dimensional model has been set-up incorporating the same kinetics law for the aggregation rate and all the removal mechanisms. A particular attention has been paid on the averaging method of the hydrodynamics parameters introduced in the flotation and kinetics kernels. More... »

PAGES

13-21

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s11663-013-9940-7

DOI

http://dx.doi.org/10.1007/s11663-013-9940-7

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1015782180


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