Wave–mean flow interaction in an MHD wake behind bluff body

Experimental studies of the effect of constant magnetic field on the process of mean velocity profile stabilization in a wake behind a bluff body are described. To interpret the obtained results, a theoretical model is proposed explaining the scheme of wave-mean flow interaction. We assume that the...

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Bibliographic Details
Published in:Fluid dynamics research 2004-10, Vol.35 (4), p.287-298
Main Authors: Branover, H., Eidelman, A., Golbraikh, E., Kapusta, A., Mikhailovich, B.
Format: Article
Language:English
Subjects:
Bluff body wake
Experimental data
Helical flow
Inertial waves
Large-scale vortical structures
MHD turbulence
Resonance transfer
Turbulent energy
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Summary:Experimental studies of the effect of constant magnetic field on the process of mean velocity profile stabilization in a wake behind a bluff body are described. To interpret the obtained results, a theoretical model is proposed explaining the scheme of wave-mean flow interaction. We assume that the stabilization process is based on the injection of energy of respective turbulent modes into vortical structures through non-attenuating inertial waves generated in these vortical structures. We also take into account helical character of turbulence in the conditions under study, with weak energy dissipation and its accumulation in large scales.
ISSN:0169-5983
1873-7005
1873-7005
DOI:10.1016/j.fluiddyn.2004.07.001