@inproceedings{e5b5520a020540c09c16cfa8ad5210c8,
title = "Model of gas flow through upper tundish nozzle refractory and initial bubble size",
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.",
keywords = "Argon gas, Gas leakage, Initial bubble size, Porous-flow model, Pressure-source mode, UTN refractory",
author = "Rui Liu and Thomas, {Brian G.}",
year = "2012",
language = "English (US)",
isbn = "9781935117247",
series = "AISTech - Iron and Steel Technology Conference Proceedings",
pages = "2235--2245",
booktitle = "AISTech 2012 - Proceedings of the Iron and Steel Technology Conference and Exposition",
note = "AISTech 2012 Iron and Steel Technology Conference and Exposition ; Conference date: 07-05-2012 Through 10-05-2012",
}