Because most authors used the package CFD ANSYS Workbench (CFD-Computational Fluid Dynamics) with software ANSYS Fluent, we also carried out our analysis using this software. In this case, the presented only short information about the study of mesh independence.īecause numerical modelling is a very valuable tool in metallurgy, especially in cases where a physical model of the equipment is not available, the submitted paper aims to present a complete procedure of numerical solution. In published papers, the mathematical formulations of solving equations are obviously discussed. Nevertheless, the results of numerical modelling depend on the accuracy of the setting of the model. However, in the publications dealing with numerical modelling of inclusions removal, there is only a sporadic description of a complex modelling procedure, while the articles are mainly limited to the evaluation of inclusion separation depending on the selected boundary conditions of casting. Because the verification of inclusions rising to the top slag in the tundish by means of operational measurements is unrealistic or very demanding in the case of physical modelling, the authors of the publications use numerical modelling (e.g., ). The situation becomes more complicated when performing a check of the reduction of inclusions during the flow of steel melt in the tundish. In the case with an M2, the RTD curves are more or less uniform for all casting strands, and the removal of inclusions to slag increased from about 55% up to 70% in comparison with M1. The RTD curves with an M1 showed a huge dead volume in the tundish. The assembly method with cut cell approach was satisfactory even when the tundish geometry was changed. The preliminary results showed that in the case of asymmetric geometry plays a role the computational mesh independency. The residence time distribution (RTD) curves and inclusion removal efficiency were used for evaluation of steady state steel flow character depending on internal configuration of a tundish with an impact pad in two design modifications (Modification 1-M1, Modification 2-M2). m −3, was considered only through the shroud tube.The distribution of inclusions, with sizes ranging from 2 µm to 100 µm and density from 2500 to 3500 kg The Lagrangian Discrete Phase Model of inclusion tracking was applied. ![]() For analysis, complex numerical modelling in the programme ANSYS Fluent was used. ![]() To effectively remove non-metallic inclusions from the steel during the flowing in a five-strand asymmetric tundish, the novel configuration of the impact pad was developed.
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