Journal title
Physical review. E, Statistical, nonlinear, and soft matter physics
DOI
10.1103/physreve.88.053014
Issue
5
Volume
88
Last updated
2024-03-03T15:54:14.53+00:00
Page
053014-
Abstract
We investigate the origins of k(-2) spectrum in a decaying Taylor-Green magnetohydrodynamic flow with zero large scale magnetic flux that was reported by Lee et al. [Phys. Rev. E 81, 016318 (2010)]. So far, a possible candidate for this scaling exponent has been the weak turbulence phenomenology. From our numerical simulations, we observe that current sheets in the magnetic Taylor-Green flow are formed in regions of magnetic discontinuities. Based on this observation and by studying the influence of the current sheets on the energy spectrum, using a filtering technique, we argue that the discontinuities are responsible for the -2 power law scaling of the energy spectra of this flow.
Symplectic ID
732152
Submitted to ORA
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Publication type
Journal Article
Publication date
18 Nov 2013