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Details for article 63 of 204 found articles
| Title: |
Global flow symmetry breaking by the anisotropic kinetic alpha-effect |
| Author: |
Rekowski, B. V. Kitchatinov, L. L. |
| Appeared in: |
Geophysical & astrophysical fluid dynamics |
| Paging: | Volume 87 (1998) nr. 1-2 pages 133-145 |
| Year: |
1998-03-01 |
| Contents: |
This paper concerns the self-excitation of large-scale flow patterns in rotating stratified spherical bodies. The Anisotropic Kinetic Alpha-effect due to the small-scale turbulence is included into the mean-field motion equation and the stability to the global flow excitations is studied by solving the linear eigenvalue problem. If the magnitude of the AKA-effect exceeds some critical value, the mean-flow instability onsets. The main finding is the preference of nonaxisymmetric flow patterns with the azimuthal wave number m = 1. The symmetry relative to the equator depends on the rotation rate and is much less definite. For Taylor numbers up to Ta ≃ 106, the symmetric flow patterns relative to the equatorial plane are slightly preferred. For faster rotation, the antisymmetric flow has somewhat smaller critical “dynamo number” for the excitation. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 63 of 204 found articles
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