A physical model study of swirl phenomena in a top blown bath
2006 (English)In: Steel Research International, ISSN 1611-3683, Vol. 77, 234-241 p.Article in journal (Refereed) Published
The present study is focused on swirl motion in a top blown water model, where a deep water swirl motion is observed. During the experiments, the top lance, with cylindrical nozzles, was placed above the water surface and thereby produced an external force on the bath. The effect on how different parameters, such as nozzle diameter and the distance between the bath surface and nozzle exit, i.e. the lance height, affect the swirl motion were studied. More specifically, the amplitude and period of the swirl as well as the starting and damping time of the swirl were determined. The amplitude was found to increase with an increased nozzle diameter and gas flow, while the period had a constant value of about 0.5 s for all nozzle diameters, gas flows and lance heights. The starting time for the swirl motion was found to decrease with an increased gas flow, while the damping time was found to be independent of gas flow rate, nozzle diameter, lance height and ratio of depth to diameter.
Place, publisher, year, edition, pages
2006. Vol. 77, 234-241 p.
Nozzles, Physical properties, Steel, Surface properties, Water, Bath, Lance, Physical modeling, Swirl, Swirling flow
IdentifiersURN: urn:nbn:se:kth:diva-24670ISI: 000237794000002ScopusID: 2-s2.0-33646267693OAI: oai:DiVA.org:kth-24670DiVA: diva2:352568
QC 201009212010-09-212010-09-212016-04-27Bibliographically approved