dorsal/arxiv
View SchemaPenta-hepta defect chaos in a model for rotating hexagonal convection
| Authors | Yuan-Nan Young, Hermann Riecke |
|---|---|
| Categories | |
| ArXiv ID | physics/0209062 |
| URL | https://arxiv.org/abs/physics/0209062 |
| DOI | 10.1103/PhysRevLett.90.134502 |
Abstract
In a model for rotating non-Boussinesq convection with mean flow we identify a regime of spatio-temporal chaos that is based on a hexagonal planform and is sustained by the {\it induced nucleation} of dislocations by penta-hepta defects. The probability distribution function for the number of defects deviates substantially from the usually observed Poisson-type distribution. It implies strong correlations between the defects inthe form of density-dependent creation and annihilation rates of defects. We extract these rates from the distribution function and also directly from the defect dynamics.
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"abstract": "In a model for rotating non-Boussinesq convection with mean flow we identify\na regime of spatio-temporal chaos that is based on a hexagonal planform and is\nsustained by the {\\it induced nucleation} of dislocations by penta-hepta\ndefects. The probability distribution function for the number of defects\ndeviates substantially from the usually observed Poisson-type distribution. It\nimplies strong correlations between the defects inthe form of density-dependent\ncreation and annihilation rates of defects. We extract these rates from the\ndistribution function and also directly from the defect dynamics.",
"arxiv_id": "physics/0209062",
"authors": [
"Yuan-Nan Young",
"Hermann Riecke"
],
"categories": [
"physics.flu-dyn",
"nlin.CD"
],
"doi": "10.1103/PhysRevLett.90.134502",
"title": "Penta-hepta defect chaos in a model for rotating hexagonal convection",
"url": "https://arxiv.org/abs/physics/0209062"
},
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