Fluid Flow Measurements in Electrically Driven Vortical Flows


Fluid Flow Measurements in Electrically Driven Vortical Flows

Cramer, A.; Gerbeth, G.; Terhoeven, P.; Krätzschmar, A.

Passing an electrical current through a volume of conducting fluid drives flow via the interaction with its own magnetic field. Among this class of electro-vortical flows the electrode-welding is a prominent example of industrial interest. In such configurations where a strong current is supplied locally, the resulting high current densities show phenomena like formation of jets and pinch-effect. The latter may disrupt the melt column in the case of very strong currents, accompanied by a discharge. Thus pinching can be used for a liquid metal current limiter with self-healing properties.
Local flow measurements are important for a better understanding of these phenomena. This paper gives results from a systematic study of the fluid motion performed with our mechano-optical velocity probe. The measured flow structure of the evolving jet was found to be in a reasonable agreement with our numerical simulations. Local pressure measurements have been consistent with the experimental and numerical results for the flow field.

  • Lecture (Conference)
    Modelling for Electromagnetic Processing, Hannover, March 24 - 26, 2003. Proceedings pp 241-246, 2003
  • Contribution to external collection
    Modelling for Electromagnetic Processing, Hannover, March 24 - 26, 2003. Proceedings pp 241-246, 2003

Permalink: https://www.hzdr.de/publications/Publ-5334
Publ.-Id: 5334