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2008 | 6 | 3 | 759-764
Tytuł artykułu

Fractality feature in incompressible three-dimensional magnetohydrodynamic turbulence

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Direct Numerical Simulation (DNS) of decaying isotropic 3D magnetohydrodynamic (MHD) turbulence based on the 10243-modes in a periodic box is used to study the statistical properties of turbulence. In this paper, the presence of intermittency in MHD turbulence is investigated through the analysis of the Probability Distribution Function (PDF) for Elsässer fields and total energy fluctuations. We observe that the PDFs of the Elsässer fields fluctuations display a strong non-Gaussian behavior at small scale, which can be ascribed to multifractality feature, while the PDFs of the total energy fluctuations have the same shape over all observed scales and are monofractal. The PDFs have stretched exponential tail and satisfy the function P(|δX|) ∼ exp(−A|δX|μ). Numerically, we extract the exponent μ and find that it is constant for monofractal behavior as the length scale varies. To check the notion of self-similarity in the respective fluctuation, we apply the compensated structure functions.
Wydawca

Czasopismo
Rocznik
Tom
6
Numer
3
Strony
759-764
Opis fizyczny
Daty
wydano
2008-09-01
online
2008-07-17
Twórcy
autor
  • Faculty of Physics, Tabriz University, Tabriz, 51664, Iran
Bibliografia
  • [1] U. Frisch Turbulence, (Cambridge University Press, Cambridge, 1995)
  • [2] A.N. Kolmogrov, J. Fluid. Mech. 13, 82 (1962) http://dx.doi.org/10.1017/S0022112062000518[Crossref]
  • [3] D. Biskamp, Nonlinear Magnetohydrodynamics (Cambridge University Press, Cambridge, 1993)
  • [4] D. Biskamp, W.-C. Müller, Phys. Plasmas 7, 4889 (2000) http://dx.doi.org/10.1063/1.1322562[Crossref]
  • [5] V. Carbone, L. Sorriso-Valvo, E. Martines, V. Antoni, P. Veltri, Phys. Rev. E 62, R49 (2000) http://dx.doi.org/10.1103/PhysRevE.62.R49[Crossref]
  • [6] J.P. Goedbloed, S. Poedts, Principles of magnetohydrodynamics: With Application to Laboratory and Astrophysical Plasmas (Cambridge University Press, Combridge, 2004)
  • [7] M.K. Verma, Phys. Rep. 40, 229 (2004) http://dx.doi.org/10.1016/j.physrep.2004.07.007[Crossref]
  • [8] L.F. Burlaga, J. Geophys. Res. 96, 5847 (1991) http://dx.doi.org/10.1029/91JA00087[Crossref]
  • [9] E. Marsch, S. Liu, Ann. Geophys. 11, 227 (1993)
  • [10] L. Sorriso-Valvo, V. Carbone, P. Veltri, G. Consolini, R. Bruno, Geophys. Res. Lett. 26, 1801 (1999) http://dx.doi.org/10.1029/1999GL900270[Crossref]
  • [11] R. Bruno, V. Carbone, B. Bavassano, L. Sorriso-Valvo, Advances in Space Research 35, 939 (2005) http://dx.doi.org/10.1016/j.asr.2005.01.106[WoS][Crossref]
  • [12] H. Politano, A. Pouquet, Geophys. Res. Lett. 25, 273 (1998) http://dx.doi.org/10.1029/97GL03642[Crossref]
  • [13] W.C. Müller, D. Biskamp, R. Grappin, Phys. Rev. E 67, 066302-1 (2003)
  • [14] W.C. Müller, D. Biskamp, Phys. Rev. Lett. 84, 475 (2000) http://dx.doi.org/10.1103/PhysRevLett.84.475[Crossref]
  • [15] W.C. Müller, R. Grappin, Phys. Rev. Lett. 95, 114502 (2005) http://dx.doi.org/10.1103/PhysRevLett.95.114502[Crossref]
  • [16] B. Hnat, S.C. Chapman, G. Rowlands, Phys. Plasmas 11, 1326 (2004) http://dx.doi.org/10.1063/1.1667500[Crossref]
  • [17] B. Hnat, S.C. Chapman, G. Rowlands, Phys. Rev. E 67, 056404-1 (2003)
  • [18] H. Politano, A. Pouquet, P.L. Sulem, Physics of fluid B 12, 2330 (1989) http://dx.doi.org/10.1063/1.859051[Crossref]
  • [19] R. Grappin, A. Pouquet, J. Leórat, Astron. Astrophys. 126, 51 (1983)
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11534-008-0086-1
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