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Related Experiment Videos

Contactless inductive flow tomography.

Frank Stefani1, Thomas Gundrum, Gunter Gerbeth

  • 1Forschungszentrum Rossendorf, P. O. Box 510119, D-01314 Dresden, Germany.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|December 17, 2004
PubMed
Summary

Contactless inductive flow tomography reconstructs liquid metal flow velocity fields. This method uses magnetic fields and Kelvin

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Area of Science:

  • Fluid dynamics
  • Electromagnetism
  • Tomography

Background:

  • Characterizing three-dimensional velocity fields in liquid metal flows is crucial for applications.
  • Contactless measurement techniques are desirable for safety and efficiency.

Purpose of the Study:

  • To reconstruct the 3D velocity field of a propeller-driven liquid metal flow using contactless inductive flow tomography.
  • To present the theoretical framework and validate the technique.

Main Methods:

  • Reconstruction based on an integral equation system for magnetic field distribution in moving conductive fluids.
  • Linear inverse problem formulation for velocity field determination from measured magnetic fields.
  • Application of external magnetic fields in orthogonal directions and measurement of induced fields.
  • Regularization of the velocity field using Kelvin's theorem and kinetic energy.

Main Results:

  • Robust reconstruction of the large-scale velocity field achieved.
  • Satisfactory agreement between inductive flow tomography results and ultrasonic measurements.

Conclusions:

  • Contactless inductive flow tomography is a viable technique for reconstructing 3D liquid metal flow velocity fields.
  • The method offers a robust and accurate alternative to traditional measurement techniques.

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