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Abstract:

We show that local directional alignment of the velocity and magnetic field fluctuations occurs rapidly in magnetohydrodynamics for a variety of parameters and is seen both in direct numerical simulations and in solar wind data. The phenomenon is due to an alignment between magnetic field and gradients of either pressure or kinetic energy, and is similar to alignment of velocity and vorticity in Navier-Stokes turbulence. This rapid and robust relaxation process leads to a local weakening of nonlinear terms. © 2008 The American Physical Society.

Registro:

Documento: Artículo
Título:Rapid alignment of velocity and magnetic field in magnetohydrodynamic turbulence
Autor:Matthaeus, W.H.; Pouquet, A.; Mininni, P.D.; Dmitruk, P.; Breech, B.
Filiación:Bartol Research Institute, Department of Physics and Astronomy, University of Delaware, Newark, DE 18716, United States
NCAR, P.O. Box 3000, Boulder, CO 80307-3000, United States
Departamento de Física, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Palabras clave:Computer simulation; Kinetic energy; Magnetic fields; Magnetohydrodynamics; Navier Stokes equations; Parameter estimation; Magnetohydrodynamic turbulence; Navier-Stokes turbulence; Turbulence
Año:2008
Volumen:100
Número:8
DOI: http://dx.doi.org/10.1103/PhysRevLett.100.085003
Título revista:Physical Review Letters
Título revista abreviado:Phys Rev Lett
ISSN:00319007
CODEN:PRLTA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v100_n8_p_Matthaeus

Referencias:

  • Woltjer, L., (1958) Proc. Natl. Acad. Sci. U.S.A., 44, p. 833. , PNASA6 0027-8424 10.1073/pnas.44.9.833
  • Belcher, J.W., Davis, L., (1971) J. Geophys. Res., 76, p. 3534. , JGREA2 0148-0227 10.1029/JA076i016p03534
  • Bavassano, B., (1982) Sol. Phys., 78, p. 373. , SLPHAX 0038-0938 10.1007/BF00151617
  • Roberts, D.A., (1987) J. Geophys. Res., 92, p. 12023. , JGREA2 0148-0227 10.1029/JA092iA11p12023
  • Dobrowolny, M., Mangeney, A., Veltri, P., (1980) Phys. Rev. Lett., 45, p. 144. , PRLTAO 0031-9007 10.1103/PhysRevLett.45.144
  • Pouquet, A., Frisch, U., Meneguzzi, M., (1986) Phys. Rev. A, 33, p. 4266. , PLRAAN 1050-2947 10.1103/PhysRevA.33.4266
  • Grappin, R., (1982) Astron. Astrophys., 105, p. 6. , AAEJAF 0004-6361
  • Matthaeus, W.H., Goldstein, M.L., Montgomery, D., (1983) Phys. Rev. Lett., 51, p. 1484. , PRLTAO 0031-9007 10.1103/PhysRevLett.51.1484
  • Ting, A.C., Matthaeus, W.H., Montgomery, D., (1986) Phys. Fluids, 29, p. 3261. , PFLDAS 0031-9171 10.1063/1.865843
  • Stribling, T., Matthaeus, W.H., (1991) Phys. Fluids B, 3, p. 1848. , PFBPEI 0899-8221 10.1063/1.859654
  • Mason, J., (2006) Phys. Rev. Lett., 97, p. 255002. , PRLTAO 0031-9007 10.1103/PhysRevLett.97.255002
  • Boldyrev, S., (2006) Phys. Rev. Lett., 96, p. 115002. , PRLTAO 0031-9007 10.1103/PhysRevLett.96.115002
  • Pelz, R., (1985) Phys. Rev. Lett., 54, p. 2505. , PRLTAO 0031-9007 10.1103/PhysRevLett.54.2505
  • Moffatt, H.K., (1985) J. Fluid Mech., 159, p. 359. , JFLSA7 0022-1120 10.1017/S0022112085003251
  • Tsinober, A., Levich, E., (1983) Phys. Lett., 99, p. 321. , PYLAAG 0375-9601 10.1016/0375-9601(83)90896-4
  • Levich, E., (1987) Phys. Rep., 151, p. 129. , PRPLCM 0370-1573 10.1016/0370-1573(87)90112-8
  • Farge, M., Pellegrino, G., Schneider, K., (2001) Phys. Rev. Lett., 87, p. 054501. , PRLTAO 0031-9007 10.1103/PhysRevLett.87.054501
  • Orszag, S.A., Patterson, G.S., (1972) Phys. Rev. Lett., 28, p. 76. , PRLTAO 0031-9007 10.1103/PhysRevLett.28.76
  • Orszag, S.A., Tang, C.-M., (1979) J. Fluid Mech., 90, p. 129. , JFLSA7 0022-1120 10.1017/S002211207900210X
  • Mininni, P., Pouquet, A., Montgomery, D., (2006) Phys. Rev. Lett., 97, p. 244503. , PRLTAO 0031-9007 10.1103/PhysRevLett.97.244503
  • Mininni, P., Pouquet, A., arXiv:abs/0707.3620v1; Breech, B., (2003) J. Geophys. Res., 108, p. 1153. , JGREA2 0148-0227 10.1029/2002JA009529
  • Petviashvili, V.I., Pokhotelov, O.A., (1992) Solitary Waves in Plasmas and in the Atmosphere, , Gordon & Breach, New York
  • Sundkvist, D., (2005) Nature (London), 436, p. 825. , NATUAS 0028-0836 10.1038/nature03931
  • Alexandrova, O., (2006) J. Geophys. Res., 111, p. 12208. , JGREA2 0148-0227 10.1029/2006JA011934
  • Meneguzzi, M., (1996) J. Comput. Phys., 123, p. 32. , JCTPAH 0021-9991 10.1006/jcph.1996.0003

Citas:

---------- APA ----------
Matthaeus, W.H., Pouquet, A., Mininni, P.D., Dmitruk, P. & Breech, B. (2008) . Rapid alignment of velocity and magnetic field in magnetohydrodynamic turbulence. Physical Review Letters, 100(8).
http://dx.doi.org/10.1103/PhysRevLett.100.085003
---------- CHICAGO ----------
Matthaeus, W.H., Pouquet, A., Mininni, P.D., Dmitruk, P., Breech, B. "Rapid alignment of velocity and magnetic field in magnetohydrodynamic turbulence" . Physical Review Letters 100, no. 8 (2008).
http://dx.doi.org/10.1103/PhysRevLett.100.085003
---------- MLA ----------
Matthaeus, W.H., Pouquet, A., Mininni, P.D., Dmitruk, P., Breech, B. "Rapid alignment of velocity and magnetic field in magnetohydrodynamic turbulence" . Physical Review Letters, vol. 100, no. 8, 2008.
http://dx.doi.org/10.1103/PhysRevLett.100.085003
---------- VANCOUVER ----------
Matthaeus, W.H., Pouquet, A., Mininni, P.D., Dmitruk, P., Breech, B. Rapid alignment of velocity and magnetic field in magnetohydrodynamic turbulence. Phys Rev Lett. 2008;100(8).
http://dx.doi.org/10.1103/PhysRevLett.100.085003