Numerical analysis of RTD curves and inclusions removal in a multi-strand asymmetric tundish with different configuration of impact ad
| Autor: | Josef Walek, Karel Michalek, Tomáš Huczala, Markéta Tkadlečková |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
lcsh:TN1-997
Materials science Flow (psychology) 02 engineering and technology 020501 mining & metallurgy General Materials Science Shroud steel lcsh:Mining engineering. Metallurgy Steady state impact pad Numerical analysis Metals and Alloys numerical modelling Mechanics 021001 nanoscience & nanotechnology Residence time distribution Tundish 0205 materials engineering Casting (metalworking) tundish Slag (welding) 0210 nano-technology DPM RTD non-metallic inclusion |
| Zdroj: | Metals, Vol 10, Iss 849, p 849 (2020) Metals Volume 10 Issue 7 |
| Popis: | 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. For analysis, complex numerical modelling in the programme ANSYS Fluent was used. The Lagrangian Discrete Phase Model of inclusion tracking was applied. The distribution of inclusions, with sizes ranging from 2 µ m to 100 µ m and density from 2500 to 3500 kg· m&minus 3, was considered only through the shroud tube. 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&mdash M1, Modification 2&mdash M2). The preliminary results showed that in the case of asymmetric geometry plays a role the computational mesh independency. The assembly method with cut cell approach was satisfactory even when the tundish geometry was changed. The RTD curves with an M1 showed a huge dead volume 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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