%0 Journal Article
%4 sid.inpe.br/mtc-m21b/2017/10.05.19.14
%2 sid.inpe.br/mtc-m21b/2017/10.05.19.14.20
%@doi 10.1016/j.physleta.2017.08.025
%@issn 0375-9601
%T Magnetic field generation by intermittent convection
%D 2017
%8 Oct.
%9 journal article
%A Chertovskih, R.,
%A Rempel, Erico Luiz,
%A Chimanski, E. V.,
%@affiliation Universidade do Porto
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Tecnológico de Aeronáutica (ITA)
%@electronicmailaddress roman@ssau.ru
%B Physics Letters A
%V 381
%N 38
%P 3300-3306
%K MagnetohydrodynamicsRayleigh–Bénard convectionConvective dynamoIntermittency.
%X Magnetic field generation in three-dimensional RayleighBénard convection of an electrically conducting fluid is studied numerically by fixing the Prandtl number at P=0.3 and varying the Rayleigh number (Ra) as a control parameter. A recently reported route to hyperchaos involving quasiperiodic regimes, crises and chaotic intermittent attractors is followed, and the critical magnetic Prandtl number (Pmc) for dynamo action is determined as a function of Ra. A mechanism for the onset of intermittency in the magnetic energy is described, the most beneficial convective regimes for dynamo action in this transition to weak turbulence are identified, and the impact of intermittency on the dependence of Pmc on Ra is discussed.
%@language en
%3 cherto_magnetic.pdf