dorsal/arxiv
View SchemaCompetition between Spiral-Defect Chaos and Rolls in Rayleigh-Benard Convection
| Authors | Kapil M. S. Bajaj, David S. Cannell, Guenter Ahlers |
|---|---|
| Categories | |
| ArXiv ID | patt-sol/9702004 |
| URL | https://arxiv.org/abs/patt-sol/9702004 |
| DOI | 10.1103/PhysRevE.55.R4869 |
Abstract
We present experimental results for pattern formation in Rayleigh-Benard convection of a fluid with a Prandtl number, Pr~ 4. We find that the spiral-defect-chaos (SDC) attractor which exists for Pr~1 has become unstable. Gradually increasing the temperature difference from below to well above its critical value no longer leads to SDC. A sudden jump of temperature difference from below to above onset causes convection to grow from thermal fluctuations and does yield SDC. However, the SDC is a transient; it coarsens and forms a single cell-filling spiral which then drifts toward the cell wall and disappears.
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"abstract": "We present experimental results for pattern formation in Rayleigh-Benard\nconvection of a fluid with a Prandtl number, Pr~ 4. We find that the\nspiral-defect-chaos (SDC) attractor which exists for Pr~1 has become unstable.\nGradually increasing the temperature difference from below to well above its\ncritical value no longer leads to SDC. A sudden jump of temperature difference\nfrom below to above onset causes convection to grow from thermal fluctuations\nand does yield SDC. However, the SDC is a transient; it coarsens and forms a\nsingle cell-filling spiral which then drifts toward the cell wall and\ndisappears.",
"arxiv_id": "patt-sol/9702004",
"authors": [
"Kapil M. S. Bajaj",
"David S. Cannell",
"Guenter Ahlers"
],
"categories": [
"patt-sol",
"nlin.PS"
],
"doi": "10.1103/PhysRevE.55.R4869",
"title": "Competition between Spiral-Defect Chaos and Rolls in Rayleigh-Benard Convection",
"url": "https://arxiv.org/abs/patt-sol/9702004"
},
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