Abstract:
Spectral method simulations show that undriven magnetohydrodynamic turbulence spontaneously generates coherent spatial correlations of several types, associated with local Beltrami fields, directional alignment of velocity and magnetic fields, and antialignment of magnetic and fluid acceleration components. These correlations suppress nonlinearity to levels lower than what is obtained from Gaussian fields, and occur in spatial patches. We suggest that this rapid relaxation leads to non-Gaussian statistics and spatial intermittency. © 2008 The American Physical Society.
Registro:
Documento: |
Artículo
|
Título: | Depression of nonlinearity in decaying isotropic MHD turbulence |
Autor: | Servidio, S.; Matthaeus, W.H.; Dmitruk, P. |
Filiación: | Bartol Research Institute, Department of Physics and Astronomy, University of Delaware, Newark, DE 19716, United States Departmento de Física, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, 1428, Buenos Aires, Argentina
|
Palabras clave: | Computer simulation; Control nonlinearities; Correlation methods; Magnetic fields; Magnetohydrodynamics; Beltrami fields; Magnetohydrodynamic turbulence; Turbulence |
Año: | 2008
|
Volumen: | 100
|
Número: | 9
|
DOI: |
http://dx.doi.org/10.1103/PhysRevLett.100.095005 |
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_n9_p_Servidio |
Referencias:
- Frisch, U., (1995) Turbulence: The Legacy of A.N. Kolmogorov, , Cambridge U. Press, Cambridge, England
- Taylor, J.B., (1974) Phys. Rev. Lett., 33, p. 1139. , PRLTAO 0031-9007 10.1103/PhysRevLett.33.1139
- Mininni, P.D., Gómez, D.O., Mahajan, S.M., (2002) Astrophys. J., 567, p. 81. , ASJOAB 0004-637X 10.1086/339850
- Stribling, T., Matthaeus, W.H., (1991) Phys. Fluids B, 3, p. 1848. , PFBPEI 0899-8221 10.1063/1.859654
- Ohsaki, S., Yoshida, Z., (2005) Phys. Plasmas, 12, p. 064505. , PHPAEN 1070-664X 10.1063/1.1936585
- Ting, A.C., Montgomery, D., Matthaeus, W.H., (1986) Phys. Fluids, 29, p. 3261. , PFLDAS 0031-9171 10.1063/1.865843
- Montgomery, D., Turner, L., Vahala, G., (1978) Phys. Fluids, 21, p. 757. , PFLDAS 0031-9171 10.1063/1.862295
- Matthaeus, W.H., Montgomery, D., (1980) Ann. N.Y. Acad. Sci., 357, p. 203. , ANYAA9 0077-8923 10.1111/j.1749-6632.1980.tb29687.x
- Mininni, P.D., Montgomery, D., Pouquet, A., (2005) Phys. Fluids, 17, p. 035112. , PFLDAS 0031-9171 10.1063/1.1863260
- Kraichnan, R.H., Panda, R., (1988) Phys. Fluids, 31, p. 2395. , PFLDAS 0031-9171 10.1063/1.866591
- Pelz, R.B., Yakhot, V., Orszag, S.A., Shtilman, L., Levich, E., (1985) Phys. Rev. Lett., 54, p. 2505. , PRLTAO 0031-9007 10.1103/PhysRevLett.54.2505
- Kerr, R.M., (1987) Phys. Rev. Lett., 59, p. 783. , PRLTAO 0031-9007 10.1103/PhysRevLett.59.783
- Ashurst, Wm.T., Kerstein, A.R., Kerr, R.M., Gibson, C.H., (1987) Phys. Fluids, 30, p. 2343. , PFLDAS 0031-9171 10.1063/1.866513
- Moffat, H.K., (1984) Turbulence and Chaotic Phenomena in Fluids, , North-Holland, Amsterdam
- Belcher, J.W., Davis Jr., L., (1971) J. Geophys. Res., 76, p. 3534. , JGREA2 0148-0227 10.1029/JA076i016p03534
- Dobrowolny, M., Mangeney, A., Veltri, P., (1980) Phys. Rev. Lett., 45, p. 144. , PRLTAO 0031-9007 10.1103/PhysRevLett.45.144
- 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
- Matthaeus, W.H., Pouquet, A., Mininni, P.D., Dmitruk, P., Breech, B., Phys. Rev. Lett., , PRLTAO 0031-9007
- Ghosh, S., Hossain, M., Matthaeus, W.H., (1993) Comput. Phys. Commun., 74, p. 18. , CPHCBZ 0010-4655 10.1016/0010-4655(93)90103-J
- Brown, M.R., (1997) J. Plasma Phys., 57, p. 203. , JPLPBZ 0022-3778 10.1017/S0022377896005211
Citas:
---------- APA ----------
Servidio, S., Matthaeus, W.H. & Dmitruk, P.
(2008)
. Depression of nonlinearity in decaying isotropic MHD turbulence. Physical Review Letters, 100(9).
http://dx.doi.org/10.1103/PhysRevLett.100.095005---------- CHICAGO ----------
Servidio, S., Matthaeus, W.H., Dmitruk, P.
"Depression of nonlinearity in decaying isotropic MHD turbulence"
. Physical Review Letters 100, no. 9
(2008).
http://dx.doi.org/10.1103/PhysRevLett.100.095005---------- MLA ----------
Servidio, S., Matthaeus, W.H., Dmitruk, P.
"Depression of nonlinearity in decaying isotropic MHD turbulence"
. Physical Review Letters, vol. 100, no. 9, 2008.
http://dx.doi.org/10.1103/PhysRevLett.100.095005---------- VANCOUVER ----------
Servidio, S., Matthaeus, W.H., Dmitruk, P. Depression of nonlinearity in decaying isotropic MHD turbulence. Phys Rev Lett. 2008;100(9).
http://dx.doi.org/10.1103/PhysRevLett.100.095005