- Abstract:
-
The feasibility of a mean-field dynamo in nonhelical turbulence with a superimposed linear shear is studied numerically in elongated shearing boxes. Exponential growth of the magnetic field at scales much larger than the outer scale of the turbulence is found. The characteristic scale of the field is lB proportional S(-1/2) and the growth rate is gamma proportional S, where S is the shearing rate. This newly discovered shear dynamo effect potentially represents a very generic mechanism for ge...
Expand abstract - Publication status:
- Published
- Publisher copy:
- 10.1103/physrevlett.100.184501
-
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- Journal:
- Physical review letters
- Volume:
- 100
- Issue:
- 18
- Pages:
- 184501
- Publication date:
- 2008-05-05
- DOI:
- EISSN:
-
1079-7114
- ISSN:
-
0031-9007
- URN:
-
uuid:35165b64-7af6-48b2-b1da-d06e799be872
- Source identifiers:
-
160810
- Local pid:
- pubs:160810
- Language:
- English
- Keywords:
- Copyright date:
- 2008
- Notes:
-
4 pages, 5 figures; replaced with revised version that matches the
published PRL
Journal article
Generation of magnetic field by combined action of turbulence and shear.
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