Abstract
Argon flowing through the porous upper tundish nozzle (UTN) refractory forms the gas bubbles which greatly impact the multiphase flow pattern in the SEN and caster, and on defect formation in the final product. Two separate computational models, (pressure-source and porous-flow), were developed and validated to study gas flow through heated UTN refractory including the thermal effects on gas expansion and permeability. A third model predicts the initial bubble size distribution. Simulations revealed an asymmetric gas distribution from the inner surface of a particular UTN design, which was confirmed with observations of a static physical water model. The models were then applied to predict the gas and bubble behavior during commercial caster operation with slide-gate flow control, including the effect of gas leakage.
| Original language | English (US) |
|---|---|
| Title of host publication | AISTech 2012 - Proceedings of the Iron and Steel Technology Conference and Exposition |
| Pages | 2235-2245 |
| Number of pages | 11 |
| State | Published - 2012 |
| Event | AISTech 2012 Iron and Steel Technology Conference and Exposition - Atlanta, GA, United States Duration: May 7 2012 → May 10 2012 |
Other
| Other | AISTech 2012 Iron and Steel Technology Conference and Exposition |
|---|---|
| Country/Territory | United States |
| City | Atlanta, GA |
| Period | 5/7/12 → 5/10/12 |
Keywords
- Argon gas
- Gas leakage
- Initial bubble size
- Porous-flow model
- Pressure-source mode
- UTN refractory
ASJC Scopus subject areas
- Industrial and Manufacturing Engineering