Swirling Effect in Immersion Nozzle on Flow and Heat Transport in Billet Continuous Casting Mold
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A numerical analysis and water model study of the mold region of a continuous casting apparatus are performed with a novel injection concept using swirling flow in the pouring tube, to control the heat and mass transfer in the continuous casting mold. <br> As a result, the following results were found:<br> (1) By changing swirl strength, it is easy to control the flow pattern as well as the direction of the flow. <br> (2) Uniform velocity distribution can be obtained within a very short distance from the outlet of the nozzle.<br> (3) Heat and mass transfer near the meniscus can be remarkably activated compared with a conventional straight type immersion nozzle without swirl. <br> (4) Swirl helps the superheat in the melt dissipate.<br> (5) Penetration depth of nozzle outlet flow is decreased remarkably by the application of swirling. <br> Those findings mentioned above are very useful to control the flow pattern in the billet and bloom continuous casters.
- Transactions of the Iron and Steel Institute of Japan
Transactions of the Iron and Steel Institute of Japan 38(8), 827-833, 1998-08-15
The Iron and Steel Institute of Japan