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On the relevance of the potential-difference method for turbulence measurements

Published online by Cambridge University Press:  21 April 2006

A. Tsinober ,
E. Kit  and
M. Teitel
A. Tsinober
Affiliation:
Department of Fluid Mechanics and Heat Transfer, Faculty of Engineering, Tel-Aviv University, Ramat Aviv, Tel-Aviv, 69978, Israel
E. Kit
Affiliation:
Department of Fluid Mechanics and Heat Transfer, Faculty of Engineering, Tel-Aviv University, Ramat Aviv, Tel-Aviv, 69978, Israel
M. Teitel
Affiliation:
Department of Fluid Mechanics and Heat Transfer, Faculty of Engineering, Tel-Aviv University, Ramat Aviv, Tel-Aviv, 69978, Israel
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Abstract

Precise theoretical relations between statistical characteristics of turbulent velocity and an electrical field are found for homogeneous and isotropic turbulence in the presence of a uniform magnetic field. These include turbulence intensities, correlations and spectra and relations allowing estimation of the degree of anisotropy of a turbulent flow. The theoretical results are verified by experiments with flow of very dilute salted water past a grid in the presence of a uniform magnetic field. The theoretical and the experimental results are in good agreement. Preliminary results of vorticity measurements are also presented.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 175 , February 1987 , pp. 447 - 461
Copyright
© 1987 Cambridge University Press

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