Turbulent dynamo action in the high-conductivity limit:: a hidden dynamo

被引：0

作者：

Rädler, KH ^{[1
]}

Geppert, U ^{[1
]}

机构：

[1] Inst Astrophys, D-14482 Potsdam, Germany

来源：

STELLAR DYNAMOS: NONLINEARITY AND CHAOTIC FLOWS | 1999年 / 178卷

关键词：

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The paper deals with a simple spherical mean-field dynamo model of alpha(2)-type in the case of high electrical conductivity. A spherically symmetric distribution of turbulent motions is assumed inside a spherical fluid body surrounded by free space, and some complete form of the corresponding mean electromotive force is taken into account. For a turbulence lacking reflectional symmetry finite growth rates of magnetic fields prove to be possible even in the limit of perfect conductivity, that is, the model corresponds to a fast dynamo. In accordance with the theorem by Bondi and Gold the dynamo-generated held is completely confined in the fluid body.

引用

页码：151 / 163

页数：13

共 50 条

[1] ON DYNAMO ACTION IN THE HIGH-CONDUCTIVITY LIMIT
RADLER, KH
GEOPHYSICAL AND ASTROPHYSICAL FLUID DYNAMICS, 1982, 20 (3-4): : 191 - 211
[2] Dynamo action in turbulent flows
Archontis, V
Dorch, SBF
Nordlund, Å
ASTRONOMY & ASTROPHYSICS, 2003, 410 (03) : 759 - 766
[3] Dynamo action in turbulent flows
Archontis, V
Nordlund, Å
SOLMAG 2002: PROCEEDINGS OF THE MAGNETIC COUPLING OF THE SOLAR ATMOSPHERE EUROCONFERENCE AND IAU COLLOQUIUM 188, 2002, 505 : 95 - 99
[4] Dynamo action in turbulent flows
Archontis, V. (vasilis@ll.iac.es), 1600, EDP Sciences (410):
[5] Turbulent dynamo action in a shear flow
Department of Mathematics, University of Newcastle, Newcastle upon Tyne NE1 7RU, United Kingdom
不详
Mon. Not. R. Astron. Soc., 3 (741-744):
[6] Turbulent dynamo action in a shear flow
Urpin, V
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1999, 308 (03) : 741 - 744
[7] THE TURBULENT ELECTROMOTIVE-FORCE IN THE HIGH-CONDUCTIVITY LIMIT
SEEHAFER, N
ASTRONOMY & ASTROPHYSICS, 1995, 301 (01) : 290 - 292
[8] An investigation into high conductivity dynamo action driven by rotating convection
Kim, EJ
Hughes, DW
Soward, AM
GEOPHYSICAL AND ASTROPHYSICAL FLUID DYNAMICS, 1999, 91 (3-4): : 303 - +
[9] The turbulent dynamo
Tobias, S. M.
JOURNAL OF FLUID MECHANICS, 2021, 912
[10] Vortex tube models for turbulent dynamo action
Bigazzi, A
Brandenburg, A
Moss, D
PHYSICS OF PLASMAS, 1999, 6 (01) : 72 - 80

← 1 2 3 4 5 →