Nonlinear multi-cellular fast dynamos

被引：3

作者：

Hughes, DW ^{[1
]}

Cattaneo, F

Kim, EJ

机构：

[1] Univ Leeds, Dept Appl Math, Leeds LS2 9JT, W Yorkshire, England

[2] Univ Chicago, Ctr Astron & Astrophys, Chicago, IL 60637 USA

来源：

STUDIA GEOPHYSICA ET GEODAETICA | 1998年 / 42卷 / 03期

关键词：

fast dynamos; mode coupling;

D O I：

10.1023/A:1023308804701

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

We investigate the kinematic and dynamic dynamos that result when the magnetic field is assumed to be spatially periodic on a scale twice that of the periodicity of the underlying driving velocity, the "CP flow" of Galloway and Proctor (1992). In the kinematic regime four distinct modes are possible; all appear to exhibit fast dynamo action. In the nonlinear regime mode coupling may occur and different saturated states are possible for the same parameter values.

引用

页码：328 / 334

页数：7

共 4 条

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Hughes, DW ;

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[2]

Childress S., 1995, Stretch, Twist, Fold: The Fast Dynamo

[3] NUMERICAL-CALCULATIONS OF FAST DYNAMOS IN SMOOTH VELOCITY-FIELDS WITH REALISTIC DIFFUSION [J].

GALLOWAY, DJ ;

PROCTOR, MRE .

NATURE, 1992, 356 (6371) :691-693

[4]

Vainshtein S. I., 1972, Soviet Physics - Uspekhi, V15, P159, DOI 10.1070/PU1972v015n02ABEH004960

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