Examination of different flow regimes in the mold of a model of continuous casting using the contactless inductive flow tomography


Examination of different flow regimes in the mold of a model of continuous casting using the contactless inductive flow tomography

Wondrak, T.; Timmel, K.; Gundrum, T.; Stefani, F.; Gerbeth, G.

In the continuous casting process the flow structure in the mold plays an important role for the quality of the steel produced. Open problems are the influence of a two phase flow in the submerged entry nozzle and the influence of electromagnetic stirrers. One possible method to determine the flow structure in the mold is the contactless inductive flow tomography (CIFT) which is able to reconstruct the three-dimensional velocity field in electrically conducting melts from externally measured induced magnetic fields. Since for thin slab casting the velocity can be assumed to be mainly two-dimensional it is sufficient to apply only one external magnetic field and to measure the induced fields at the narrow faces of the mold. The actual time resolution is about 1 Hz. We will present the results of an experiment with a two phase flow regime and the effects of an electromagnetic stirrer around the submerged entry nozzle on the flow field in the mold.

Keywords: continuous casting; velocity measurement; liquid metal; contactless inductive flow tomography

  • Lecture (Conference)
    13th MHD-days, 22.-23.11.2010, Forschungszentrum Dresden-Rossendorf, Germany

Permalink: https://www.hzdr.de/publications/Publ-14991
Publ.-Id: 14991