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Title Détermination des coefficients de transport turbulent et analyse des cycles magnétiques produits dans un modèle dynamo en champ moyen avec et sans rétroaction magnétique
URL
Publication Date
Date Accessioned
University/Publisher Université de Montréal
Subjects/Keywords Effet Alpha; Diffusivité turbulente; Dynamo solaire; Modèle dynamo en champ moyen; Coefficient de transport turbulent; Grand minimum; Alpha effect; Turbulent diffusivity; Solar dynamo; Mean field dynamo model; Turbulent transport coefficients; Grand minima; Physics - Astronomy and Astrophysics / Physique - Astronomie et astrophysique (UMI : 0606)
Contributors Charbonneau, Paul (advisor)
Rights Unrestricted
Country of Publication ca
Record ID handle:1866/19303
Repository montreal
Date Indexed 2020-08-12
Issued Date 2017-09-27 00:00:00

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Mean-field electrodynamics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 2.4 Extracting the a-and b-tensors . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 2.5 2.6 2.4.1 The singular value decomposition procedure…

…53 Magnetic quenching of the turbulent emf . . . . . . . . . . . . . . . . . . . . . 55 2.5.1 α Quenching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 2.5.2 Diffusivity quenching…

…70 TABLE DES MATIRES vii 3.3 Global MHD simulation results . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 3.4 Mean-field simulation results . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 3.5 Thermal response in the…

…kinematic mean-field model . . . . . . . . . . . . . . . . . . . . . . . . . 103 4.3.1 Mean-field dynamo equation . . . . . . . . . . . . . . . . . . . . . . . . 103 4.3.2 Magnetic backreaction 4.3.3 A non-kinematic α2 Ω mean-field dynamo model…

…Reconstruction of the β-tensor . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 2.5 Mean azimutal turbulent electromotive force and its reconstruction . . . . . . . 53 2.6 SOCA-based reconstructions 2.7 Bar diagram of the αφφ tensor component…

…79 3.4 Temporally averaged differential rotation profiles extracted from EULAG-HD/MHD conjointly with two α-tensor components . . . . . . . . . . . . . . . . . . . . . 82 3.5 Toroidal magnetic field produced by a mean-field model where two dynamo…

…conjointly with the power spectral density both computed from EULAG-MHD . . . . . . . . . . . . . . . . . . . . . . . . 88 3.8 Total power of hΘ0 i contained inside the frequency bands f1 and f3 3.9 Time series of the mean emf components extracted from…

…the millenium simu- . . . . . . 89 lation and as reconstructed using Equations (3.7) and (3.18) . . . . . . . . . . . 96 3.10 Toroidal magnetic field from two kinematic mean-field models using the turbulent emf and Equation…

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