The Use of an Enhanced Eulerian Deposition Model to Investigate Nozzle Clogging During Continuous Casting of Steel
2014 (English)In: Metallurgical and materials transactions. B, process metallurgy and materials processing science, ISSN 1073-5615, E-ISSN 1543-1916, Vol. 45, no 6, 2414-2424 p.Article in journal (Refereed) Published
Nozzle clogging caused by the build-up of non-metallic inclusions on ceramic walls is a serious industrial problem during continuous casting of steel. The current theoretical study uses the extended Eulerian model to predict the inclusion deposition rate in a submerged entry nozzle (SEN). The model considers Brownian and turbulent diffusion, turbophoresis, and thermophoresis as transportation mechanisms. First, the steel flow in a tundish was simulated using a three-dimensional CFD model. The obtained flow parameter in a SEN was then put into the Eulerian deposition model to predict the deposition rate of non-metallic inclusions. Thereafter, the deposition rates of different-size inclusions in the SEN were predicted and compared. The result shows that the steel flow is non-uniform in the SEN of the tundish. This leads to an uneven distribution of the inclusion deposition rates at different locations of the inner wall of the SEN. In addition, large size inclusions among the size of inclusions considered show a large deposition rate, due to the strong effect of turbophoresis.
Place, publisher, year, edition, pages
2014. Vol. 45, no 6, 2414-2424 p.
Computational fluid dynamics, Computer simulation, Continuous casting, Deposition, Deposition rates, Nozzles, Continuous casting of steels, Deposition modeling, Industrial problem, Non-metallic inclusions, Submerged entry nozzles, Three-dimensional CFD model, Transportation mechanism, Turbulent diffusion
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-158819DOI: 10.1007/s11663-014-0145-5ISI: 000345089900043ScopusID: 2-s2.0-84920255184OAI: oai:DiVA.org:kth-158819DiVA: diva2:783888
QC 201501272015-01-272015-01-122015-03-26Bibliographically approved