Mechanism of energy transformations in shear magnetohydrodynamic flows

G. D. Chagelishvili, T. S. Hristov, R. G. Chanishvili, and J. G. Lominadze
Phys. Rev. E 47, 366 – Published 1 January 1993
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Abstract

Evolution of slow magnetoacoustic perturbations is used to demonstrate a new mechanism of plane Couette flow shear energy transformation. The initial uniform magnetic field is considered to be directed along the unperturbed flow velocity. We find that the amplification of waves is nonordinary—it occurs in a limited time interval and is anomalously strong. The unusual behavior is manifested also by the fact that the characteristic length scale of perturbation diminishes down to the dissipative scales not only due to nonlinear cascade processes, but due to a linear drift in the k space as well.

  • Received 2 March 1992

DOI:https://doi.org/10.1103/PhysRevE.47.366

©1993 American Physical Society

Authors & Affiliations

G. D. Chagelishvili

  • Abastumani Astrophysical Observatory, Avenue A. Kazbegi 2a, 380060, Tbilisi, Georgia

T. S. Hristov

  • Space Research Institute, 6 Moskovska Street, 1000 Sofia, Bulgaria

R. G. Chanishvili and J. G. Lominadze

  • Abastumani Astrophysical Observatory, Avenue A. Kazbegi 2, 380060, Tbilisi, Georgia

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Vol. 47, Iss. 1 — January 1993

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