Large dispersion, averaging and attractors: three 1D paradigms
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Kostianko, A, Titi, E and Zelik, S (2016) Large dispersion, averaging and attractors: three 1D paradigms arXiv.
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1601.00317v1.pdf - Author's Original Available under License : See the attached licence file. Download (365kB) | Preview |
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Official URL: http://arxiv.org/abs/1601.00317v1
Abstract
The effect of rapid oscillations, related to large dispersion terms, on the dynamics of dissipative evolution equations is studied for the model examples of the 1D complex Ginzburg-Landau and the Kuramoto-Sivashinsky equations. Three different scenarios of this effect are demonstrated. According to the first scenario, the dissipation mechanism is not affected and the diameter of the global attractor remains uniformly bounded with respect to the very large dispersion coefficient. However, the limit equation, as the dispersion parameter tends to infinity, becomes a gradient system. Therefore, adding the large dispersion term actually suppresses the non-trivial dynamics. According to the second scenario, neither the dissipation mechanism, nor the dynamics are essentially affected by the large dispersion and the limit dynamics remains complicated (chaotic). Finally, it is demonstrated in the third scenario that the dissipation mechanism is completely destroyed by the large dispersion, and that the diameter of the global attractor grows together with the growth of the dispersion parameter.
| Item Type: | Article | ||||||||||||
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| Divisions : | Faculty of Engineering and Physical Sciences > Mathematics | ||||||||||||
| Authors : |
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| Date : | 3 January 2016 | ||||||||||||
| Copyright Disclaimer : | This is an arXiv version of the paper. | ||||||||||||
| Uncontrolled Keywords : | math.AP, math.AP, 35B40, 35B45 | ||||||||||||
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| Additional Information : | This is an arXiv version of the paper. arXiv:1601.00317 [math.AP] | ||||||||||||
| Depositing User : | Symplectic Elements | ||||||||||||
| Date Deposited : | 25 Feb 2016 10:24 | ||||||||||||
| Last Modified : | 25 Feb 2016 10:24 | ||||||||||||
| URI: | http://epubs.surrey.ac.uk/id/eprint/809936 |
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