Yadav, Rakesh K. ; Verma, Mahendra K. ; Wahi, Pankaj (2012) Bistability and chaos in the Taylor-Green dynamo Physical Review E - Statistical, Nonlinear and Soft Matter Physics, 85 (3). ISSN 1539-3755
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Official URL: http://doi.org/10.1103/PhysRevE.85.036301
Related URL: http://dx.doi.org/10.1103/PhysRevE.85.036301
Abstract
Using direct numerical simulations, we study dynamo action under Taylor-Green forcing for a magnetic Prandtl number of 0.5. We observe bistability with weak- and strong-magnetic-field branches. Both the dynamo branches undergo subcritical dynamo transition. We also observe a host of dynamo states including constant, periodic, quasiperiodic, and chaotic magnetic fields. One of the chaotic states originates through a quasiperiodic route with phase locking, while the other chaotic attractor appears to follow the Newhouse-Ruelle-Takens route to chaos. We also observe intermittent transitions between quasiperiodic and chaotic states for a given Taylor-Green forcing.
Item Type: | Article |
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Source: | Copyright of this article belongs to The American Physical Society. |
ID Code: | 118959 |
Deposited On: | 05 Jun 2021 05:54 |
Last Modified: | 05 Jun 2021 05:54 |
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