By Laurentiu Nastac, Lifeng Zhang, Brian G. Thomas, Adrian S. Sabau, Nagy El-Kaddah, Adam C. Powell, Herve Combeau
Complaints of a symposium subsidized by means of organization for Iron and metal Technology
the approach know-how and Modeling Committee of the Extraction and Processing Division
the Solidification Committee of the fabrics Processing and production department of TMS (The Minerals, Metals & fabrics Society)
Held through the TMS 2012 Annual assembly & Exhibition Orlando, Florida, united states, March 11-15, 2012Content:
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Additional resources for CFD Modeling and Simulation in Materials Processing
5Or>SiO2 | Figure 1: Illustration of fuming mechanism in ladle refining. F i g u r e 2: 34 Computational domain and grid. In order to establish whether the amount of metal at the interface was a limiting factor, an Eulerian-Lagrangian two-phase model  was applied to simulate the flow conditions in the ladle for typical gas rates and ladle geometries. The model is not perfect since it does not accurately account for the high gas fractions observed in the process, but it should at least give estimates which are of the correct order of magnitude.
However, for modelling simplicity we will assume that it is a part of the gas mixture. The species conservation is mathematically accounted for by where p is gas density, v is gas velocity, Yu Ju and R¡ are the mass fraction, diffusion flux and net reaction rate for species /. r are the molecular and thermal diffusion coefficients for species /'. Sc, is the turbulent Schmidt number. Although the reaction between liquid silicon and oxygen, Reaction I, is a heterogeneous multiphase reaction, we treat it as a wall gas reaction where silicon, Si, is a site species on the metal surface.
The species conservation is mathematically accounted for by where p is gas density, v is gas velocity, Yu Ju and R¡ are the mass fraction, diffusion flux and net reaction rate for species /. r are the molecular and thermal diffusion coefficients for species /'. Sc, is the turbulent Schmidt number. Although the reaction between liquid silicon and oxygen, Reaction I, is a heterogeneous multiphase reaction, we treat it as a wall gas reaction where silicon, Si, is a site species on the metal surface.