Helicity generation in turbulent MHD flows

O. G. Chkhetiani; S. S. Moiseev; E. I. Golbraikh

doi:10.1134/1.558688

Helicity generation in turbulent MHD flows

O. G. Chkhetiani, S. S. Moiseev, E. I. Golbraikh

Department of Physics

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2 Scopus citations

Abstract

We study turbulent flow of a conducting liquid in a uniform external magnetic field. It is shown that intense helicity generation is possible in the presence of a mean shear flow. It is noted that even though the mean helicity of the initial flow can be zero, the presence of internal topological structure of the flow, for example the presence of helicity of different signs at different scales, is nevertheless necessary for helicity generation.

Original language	English
Pages (from-to)	513-517
Number of pages	5
Journal	Journal of Experimental and Theoretical Physics
Volume	87
Issue number	3
DOIs	https://doi.org/10.1134/1.558688
State	Published - 1 Jan 1998

ASJC Scopus subject areas

Physics and Astronomy (all)

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abstract = "We study turbulent flow of a conducting liquid in a uniform external magnetic field. It is shown that intense helicity generation is possible in the presence of a mean shear flow. It is noted that even though the mean helicity of the initial flow can be zero, the presence of internal topological structure of the flow, for example the presence of helicity of different signs at different scales, is nevertheless necessary for helicity generation.",

author = "Chkhetiani, {O. G.} and Moiseev, {S. S.} and Golbraikh, {E. I.}",

note = "Funding Information: We thank A. Eidelman (Beersheba, Israel) for providing the laboratory data and for fruitful discussions. This work was supported in part by the Russian Fund for Fundamental Research (Grant No. 96-02-19560).",

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AU - Moiseev, S. S.

AU - Golbraikh, E. I.

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PY - 1998/1/1

Y1 - 1998/1/1

N2 - We study turbulent flow of a conducting liquid in a uniform external magnetic field. It is shown that intense helicity generation is possible in the presence of a mean shear flow. It is noted that even though the mean helicity of the initial flow can be zero, the presence of internal topological structure of the flow, for example the presence of helicity of different signs at different scales, is nevertheless necessary for helicity generation.

AB - We study turbulent flow of a conducting liquid in a uniform external magnetic field. It is shown that intense helicity generation is possible in the presence of a mean shear flow. It is noted that even though the mean helicity of the initial flow can be zero, the presence of internal topological structure of the flow, for example the presence of helicity of different signs at different scales, is nevertheless necessary for helicity generation.

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Helicity generation in turbulent MHD flows

Abstract

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