Local flow measurement in a continuous casting model test stand


Local flow measurement in a continuous casting model test stand

Hernández, D.; Wondrak, T.; Karcher, C.

Local Lorentz force velocimetry (LFV) is a contactless local velocity measurement technique for liquid metals. Due to the interaction between an electrically moving liquid and an applied magnetic field, eddy currents and flow-braking Lorentz forces are induced within the fluid. Due to Newton’s third law, a counter force of the same magnitude acts on the source of the applied magnetic field which is in our case a permanent magnet. The magnet is connected to a new generation force/torque sensor that has been especially developed to record all force and torque components. This sensor has already been tested at a continuous casting model with a 15 mm cubic magnet providing an insight of the 3-D velocity distribution of GaInSn near the wide face of the mold [1]. For a better understanding of these results, especially regarding torque sensing, we propose a kinematic approach of ohm’s law where the velocity field is already given. In this case we avoid the variability and noise of the measurements meaning that the force depends just on the velocity distribution of the liquid metal. In this paper we present a comparison between our numerical model and the previous experiments.

  • Contribution to proceedings
    Workshop Elektroprozesstechnik, 22.-23.09.2016, Ilmenau, Deutschland
  • Lecture (Conference)
    Workshop Elektroprozesstechnik, 22.-23.09.2016, Ilmenau, Deutschland

Permalink: https://www.hzdr.de/publications/Publ-25056
Publ.-Id: 25056