| Issue |
Europhys. Lett.
Volume 43, Number 5, September I 1998
|
|
|---|---|---|
| Page(s) | 516 - 521 | |
| Section | Classical areas of phenomenology | |
| DOI | https://doi.org/10.1209/epl/i1998-00391-2 | |
| Published online | 01 September 2002 | |
Determination of anomalous exponents of structure functions in two-dimensional magnetohydrodynamic turbulence
1
Laboratoire G.D. Cassini, CNRS UMR 6529, OCA Observatoire de Nice, B.P. 4229, 06304 Nice Cedex 04, France
2
Dipartimento di Fisica, Università della Calabria, 87036 Roges di Rende, Cosenza, Italy
Received:
23
February
1998
Accepted:
14
July
1998
We determine numerically in two space dimensions the anomalous exponents of
structure functions of the
velocity 
, the magnetic field 
and the Elsässer variables
up to order eight.
To that effect, we make use of new exact relationships derived recently
for mixed 
third-order correlators.
These exponents are compared to existing models of
intermittency for either neutral or MHD flows, none of which seem to apply,
possibly indicative of a more complex behavior for MHD flows than for neutral
fluids.
PACS: 47.27.Jv – High-Reynolds-number turbulence / 47.27.Gs – Isotropic turbulence; homogeneous turbulence / 47.65.+a – Magnetohydrodynamics and electrohydrodynamics
© EDP Sciences, 1998
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