FLUID HELICITY AND DYNAMO BIFURCATIONS

被引：12

作者：

FEUDEL, F

SEEHAFER, N

SCHMIDTMANN, O

机构：

[1] Max-Planck-Gruppe Nichtlineare Dynamik, Universität Potsdam, D-14415 Potsdam

来源：

PHYSICS LETTERS A | 1995年 / 202卷 / 01期

关键词：

D O I：

10.1016/0375-9601(95)00307-O

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The bifurcation behaviour of the 3D magnetohydrodynamic equations has been studied for external forcings of varying degree of helicity. With increasing strength of the forcing a primary non-magnetic steady state loses stability to a magnetic periodic state if the helicity exceeds a threshold value and to different non-magnetic states otherwise.

引用

页码：73 / 78

页数：6

共 14 条

[1]

Roberts, Soward, Annu. Rev. Fluid Mech., 24, (1992)

[2]

Moffatt, Magnetic field generation in electrically conducting fluids, (1978)

[3]

Krause, Radler, Mean-field magnetohydrodynamics and dynamo theory, (1980)

[4]

Arnold, Korkina, Vest. Mosk. Univ. Mat. Mekh., 3, (1983)

[5]

Dombre, Frisch, Greene, Henon, Mehr, Soward, J. Fluid Mech., 167, (1986)

[6]

Galloway, Frisch, Dynamo action in a family of flows with chaotic streamlines, Geophysical & Astrophysical Fluid Dynamics, 36, (1986)

[7]

Galloway, Frisch, J. Fluid Mech., 180, (1987)

[8]

Podvigina, Pouquet, Physica D, 75, (1994)

[9]

Galanti, Sulem, Pouquet, Linear and non-linear dynamos associated with ABC flows, Geophysical & Astrophysical Fluid Dynamics, 66, (1992)

[10]

Roberts, An introduction to magnetohydrodynamics, (1967)

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