Data/hora: 07/06/2024 05:26:37

Provedor de dados: | 5
País: | France
Título: | Generation of a magnetic field by dynamo action in a turbulent flow of liquid sodium
Autores: | Monchaux, R.; Berhanu, M.; Bourgoin, M.; Moulin, M.; Odier, Ph.; Pinton, J. -f.; Volk, R.; Fauve, S.; Mordant, N.; Petrelis, F.; Chiffaudel, A.; Daviaud, F.; Dubrulle, B.; Gasquet, C.; Marie, Louis; Ravelet, F.
Data: | 2007-01
Ano: | 2007
Resumo: | We report the observation of dynamo action in the von Karman sodium experiment, i.e., the generation of a magnetic field by a strongly turbulent swirling flow of liquid sodium. Both mean and fluctuating parts of the field are studied. The dynamo threshold corresponds to a magnetic Reynolds number R-m similar to 30. A mean magnetic field of the order of 40 G is observed 30% above threshold at the flow lateral boundary. The rms fluctuations are larger than the corresponding mean value for two of the components. The scaling of the mean square magnetic field is compared to a prediction previously made for high Reynolds number flows.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/00253/36472/35017.pdf

DOI:10.1103/PhysRevLett.98.044502

http://archimer.ifremer.fr/doc/00253/36472/

Editor: | American Physical Soc
Formato: | application/pdf
Fonte: | Physical Review Letters (0031-9007) (American Physical Soc), 2007-01 , Vol. 98 , N. 4 , P. -

Fonte:

2007 The American Physical Society

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