Helicity and characteristic scale of the transition between inertial and dissipative intervals

The present paper deals with the study of spectral properties of the helical modes of uniform isotropic turbulence in the presence and in the absence of mean helicity. It is shown that even in the absence of mean helicity, the helicity of individual helical modes affects the spectral behavior of tur...

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Bibliographic Details
Published in:International journal of non-linear mechanics 2009-05, Vol.44 (4), p.441-444
Main Author: Golbraikh, E.
Format: Article
Language:English
Subjects:
Dissipation
Fluid dynamics
Fluid flow
Helical
Helical turbulence
Helicity
Isotropic turbulence
Spectra
Turbulence
Turbulent spectra
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Summary:The present paper deals with the study of spectral properties of the helical modes of uniform isotropic turbulence in the presence and in the absence of mean helicity. It is shown that even in the absence of mean helicity, the helicity of individual helical modes affects the spectral behavior of turbulence in pre-dissipative region. Besides, it is shown that both with and without mean helicity, there exists an intermediate characteristic scale connected with the presence of helicity in helical modes.
ISSN:0020-7462
1878-5638
DOI:10.1016/j.ijnonlinmec.2009.02.003