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Generation of non-Gaussian statistics and coherent structures in ideal magnetohydrodynamics
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10.1063/1.3206949
/content/aip/journal/pop/16/8/10.1063/1.3206949
http://aip.metastore.ingenta.com/content/aip/journal/pop/16/8/10.1063/1.3206949
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Total energy spectrum for ideal (lines) and dissipative (symbols) runs at , 0.4 and 1.0.

Image of FIG. 2.
FIG. 2.

Contours of the electric current density for the dissipative run (left) and the ideal run (right) at (top to bottom) .

Image of FIG. 3.
FIG. 3.

(a) Evolution of the kurtosis of for ideal (solid line) and dissipative (dashed line) runs. Later, and at , respectively. (b) PDFs of longitudinal Elsässer increments , for ideal and dissipative runs at for small scale , and large scale ; is variance of .

Image of FIG. 4.
FIG. 4.

The evolution of and for the ideal run (lines) and dissipative run (symbols) at , respectively. (d): scale-dependent kurtosis of , , for the ideal run (lines) and dissipative run (symbols) at (solid, squares), 0.4 (dashed, triangles) and 1.0 (dotted, circles). At the ideal and dissipative cases differ greatly—the dissipative case remains intermittent; the ideal case approaches equipartition and later become Gaussian.

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/content/aip/journal/pop/16/8/10.1063/1.3206949
2009-08-13
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Generation of non-Gaussian statistics and coherent structures in ideal magnetohydrodynamics
http://aip.metastore.ingenta.com/content/aip/journal/pop/16/8/10.1063/1.3206949
10.1063/1.3206949
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