Intermittency in Hall-magnetohydrodynamics with a strong guide field
Intermittency in Hall-magnetohydrodynamics with a strong guide field
复制标题
具有强引导场的霍尔磁流体动力学间歇性
DOI:
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发表时间:
2013
期刊:
影响因子:
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通讯作者:
P. Mininni
中科院分区:
文献类型:
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作者:
P. R. Imazio;L. Martin;P. Dmitruk;P. Mininni
We present a detailed study of intermittency in the velocity and magnetic field fluctuations of compressible Hall-magnetohydrodynamic turbulence with an external guide field. To solve the equations numerically, a reduced model valid when a strong guide field is present is used. Different values for the ion skin depth are considered in the simulations. The resulting data are analyzed computing field increments in several directions perpendicular to the guide field, and building structure functions and probability density functions. In the magnetohydrodynamic limit, we recover the usual results with the magnetic field being more intermittent than the velocity field. In the presence of the Hall effect, field fluctuations at scales smaller than the ion skin depth show a substantial decrease in the level of intermittency, with close to monofractal scaling.
影响因子:
4.9
作者:
Camporeale, Enrico;Burgess, David
通讯作者:
Burgess, David
影响因子:
2.2
作者:
Bian N
通讯作者:
Bian N