Advertisement

Preliminary Vorticity Measurements by a Method Based on a MHD Principle

  • A. Tsinober
  • E. Kit
  • M. Teitel
Conference paper

Abstract

The idea of the method comes from MHD and is based on the equation div j = 0 and the Ohm’s law j = σ(∇⌽) + v × B), where j — is the electric current, — the potential of the electrical field, v — velocity, B — magnetic field intensity. The consequence is ∇2⌽ = Brotv (the term vrotB is several orders smaller). This enables one to measure the component of the vorticity ωB parallel to the magnetic field, by measuring the ∇2⌽ which in turn could be measured using a 7 electrodes probe realizing a central difference approximation of the Laplacian. Thus, the method is an absolute one and for this reason no calibration procedure is necessary.

Keywords

Magnetic Field Intensity Vorticity Component Electrode Probe Dimensional Spectrum Central Difference Approximation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Baker, R.C. 1971 On the electromagnetic vortex probe. J. Phys. E4, 99–101.Google Scholar
  2. Baker, R.C. 1983 A review of recent developments in electromagnetic flow measurement. In: Progress in Astronautics and Aeronautics, Vol. 84, 225–259.Google Scholar
  3. Grossman, L.M.; Li, H. & Einstein, H. 1957 Turbulence in civil engineering. Investigation of liquid shear flow by electromagnetic induction. Proc. Amer. Soc. Civ. Engrs., J. Hydr. Div. 83, No. 1394, 1–15.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1987

Authors and Affiliations

  • A. Tsinober
    • 1
  • E. Kit
    • 1
  • M. Teitel
    • 1
  1. 1.Department of Fluid Mechanics, Faculty of EngineeringTel-Aviv UniversityRamat Aviv, Tel-AvivIsrael

Personalised recommendations