The study of turbulence in MHD flow generated by rotating and traveling magnetic fields

Ilya Kolesnichenko; Alexander Pavlinov; Ephim Golbraikh; Peter Frick; Arkadii Kapusta; Boris Mikhailovich

doi:10.1007/s00348-015-1957-z

The study of turbulence in MHD flow generated by rotating and traveling magnetic fields

Ilya Kolesnichenko, Alexander Pavlinov, Ephim Golbraikh, Peter Frick, Arkadii Kapusta, Boris Mikhailovich

Ben-Gurion University of the Negev

Research output: Contribution to journal › Article › peer-review

Abstract

We consider a problem of spectral analysis of signals from electromagnetic sensors operating in a turbulent MHD flow generated by rotating and traveling magnetic fields, which create a strong electromagnetic noise. Using a wavelet-based technique for cross-correlation signal analysis and filtration, we show that at frequencies lower than the frequency of the applied magnetic field, the spectral properties of the velocity field can be clearly seen in spite of the fact that the measured fields are much weaker than the driving rotating (or traveling) magnetic field. On the basis of the proposed method, spectra of turbulent velocity fields, measured in the experiment, were studied.

Original language	American English
Pages (from-to)	1-11
Number of pages	11
Journal	Experiments in Fluids
Volume	56
Issue number	5
DOIs	https://doi.org/10.1007/s00348-015-1957-z
State	Published - 1 May 2015

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Fluid Flow and Transfer Processes
General Physics and Astronomy
Computational Mechanics

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10.1007/s00348-015-1957-z

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abstract = "We consider a problem of spectral analysis of signals from electromagnetic sensors operating in a turbulent MHD flow generated by rotating and traveling magnetic fields, which create a strong electromagnetic noise. Using a wavelet-based technique for cross-correlation signal analysis and filtration, we show that at frequencies lower than the frequency of the applied magnetic field, the spectral properties of the velocity field can be clearly seen in spite of the fact that the measured fields are much weaker than the driving rotating (or traveling) magnetic field. On the basis of the proposed method, spectra of turbulent velocity fields, measured in the experiment, were studied.",

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AU - Kolesnichenko, Ilya

AU - Pavlinov, Alexander

AU - Golbraikh, Ephim

AU - Frick, Peter

AU - Kapusta, Arkadii

AU - Mikhailovich, Boris

PY - 2015/5/1

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N2 - We consider a problem of spectral analysis of signals from electromagnetic sensors operating in a turbulent MHD flow generated by rotating and traveling magnetic fields, which create a strong electromagnetic noise. Using a wavelet-based technique for cross-correlation signal analysis and filtration, we show that at frequencies lower than the frequency of the applied magnetic field, the spectral properties of the velocity field can be clearly seen in spite of the fact that the measured fields are much weaker than the driving rotating (or traveling) magnetic field. On the basis of the proposed method, spectra of turbulent velocity fields, measured in the experiment, were studied.

AB - We consider a problem of spectral analysis of signals from electromagnetic sensors operating in a turbulent MHD flow generated by rotating and traveling magnetic fields, which create a strong electromagnetic noise. Using a wavelet-based technique for cross-correlation signal analysis and filtration, we show that at frequencies lower than the frequency of the applied magnetic field, the spectral properties of the velocity field can be clearly seen in spite of the fact that the measured fields are much weaker than the driving rotating (or traveling) magnetic field. On the basis of the proposed method, spectra of turbulent velocity fields, measured in the experiment, were studied.

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JO - Experiments in Fluids

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The study of turbulence in MHD flow generated by rotating and traveling magnetic fields

Abstract

All Science Journal Classification (ASJC) codes

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