Combining contactless inductive flow tomography and mutual inductance tomography for the flow determination in a model of continuous casting


Combining contactless inductive flow tomography and mutual inductance tomography for the flow determination in a model of continuous casting

Wondrak, T.; Stefani, F.; Gerbeth, G.; Timmel, K.; Peyton, A. J.; Yin, W.; Terzija, N.

In the continuous casting process the flow structure in the mold plays an important role for the quality of the produced steel. Open issues of this technoloqy concern 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 [1,2] 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.

[1] Th. Wondrak et al. (2010), Meas. Sci. Techn. 21, 045402
[2] N. Terzija et al. (2011), Meas. Sci. Techn. 22, 015501

Keywords: contactless inductive flow tomography; mutual inductance tomography; flow visualization; continuous casting

  • Contribution to proceedings
    8th International PAMIR conference on fundamental and applied MHD, 05.-9.9.2011, Borgo, France, 569-573
  • Lecture (Conference)
    8th International PAMIR conference on fundamental and applied MHD, 05.-9.9.2011, Borgo, France

Permalink: https://www.hzdr.de/publications/Publ-15660
Publ.-Id: 15660