Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf

2 Publications
Flow determination in a model of continuous casting by combining contactless inductive flow tomography and mutual inductance tomography
Wondrak, T.; Stefani, F.; Gerbeth, G.; Timmel, K.; Eckert, S.; Klotsche, K.; Peyton, A. J.; Yin, W.; Terzija, N.;
For a physical model of a continuous caster, we present results on the simultaneous measurements of the flow in the mould by the Contactless Inductive Flow Tomography (CIFT), and of the conductivity distribution in the submerged entry nozzle (SEN) by Mutual Inductance Tomography (MIT) for a two phase flow setup. Depending on the gas flow rate, various flow regimes in the SEN and in the mould are identified, among them pressure oscillations in the gas feeding system, transitions between double and single vortex flows, and transient single port ejections.
In addition we give a summary of an experimental campaign with a magnetic stirrer around the SEN and its effects on the flow in the mould. As expected and desired, the swirling flow leads to a stronger upward fluid motion along the walls. At the same time, however, the oscillatory character of the flow becomes stronger.
The paper concludes with some new developments for CIFT towards a robust measurement of the very small induced magnetic field using pickup coils which allow the application of CIFT in environments with high DC magnetic fields and strong noise.
Keywords: liquid metal, contactless inductive flow tomography (CIFT), electromagnetic inductance tomography (MIT), continuous casting
  • Lecture (Conference)
    6th International Symposium on Process Tomography, 25.-28.3.2012, Cape Town, South Afrika
  • Contribution to proceedings
    6th International Symposium on Process Tomography, 25.-28.3.2012, Cape Town, South Afrika

Publ.-Id: 17161 - Permalink