Dynamo Action in a Quasi-Keplerian Taylor-Couette Flow.
Dynamo Action in a Quasi-Keplerian Taylor-Couette Flow.
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准开普勒泰勒-库埃特流中的发电机作用
DOI:
10.1103/physrevlett.119.164501
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发表时间:
2017
影响因子:
8.6
通讯作者:
M. Avila
中科院分区:
文献类型:
--
作者:
A. Guseva;A.P. Willis;R. Hollerbach;M. Avila
We numerically compute the flow of an electrically conducting fluid in a Taylor-Couette geometry where the rotation rates of the inner and outer cylinders satisfy. In this quasi-Keplerian regime, a nonmagnetic system would be Rayleigh stable for all Reynolds numbers Re, and the resulting purely azimuthal flow incapable of kinematic dynamo action for all magnetic Reynolds numbers. Forand, we demonstrate the existence of a finite-amplitude dynamo, whereby a suitable initial condition yields mutually sustaining turbulence and magnetic fields, even though neither could exist without the other. This dynamo solution results in significantly increased outward angular momentum transport, with the bulk of the transport being by Maxwell rather than Reynolds stresses.
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DOI:
10.1103/physreve.84.066318
发表时间:
2011
期刊:
Physical review. E, Statistical, nonlinear, and soft matter physics
影响因子:
--
作者:
G. Krstulovic;Gentien Thorner;Julien;S. Fauve;M. Brachet
通讯作者:
M. Brachet
影响因子:
8.6
作者:
Y. Ponty;J. Laval;B. Dubrulle;F. Daviaud;J. Pinton
通讯作者:
J. Pinton
影响因子:
6.5
作者:
G. Lesur;P. Longaretti
通讯作者:
P. Longaretti
影响因子:
4.6
作者:
C. Nore;J. Guermond;R. Laguerre;J. Léorat;F. Luddens
通讯作者:
F. Luddens
影响因子:
44.1
作者:
L. Widrow
通讯作者:
L. Widrow