dorsal/arxiv
View SchemaSquare patterns in Rayleigh-Benard convection with rotation about a vertical axis
| Authors | Kapil M. S. Bajaj, Jun Liu, Brian Naberhuis, Guenter Ahlers |
|---|---|
| Categories | |
| ArXiv ID | patt-sol/9802002 |
| URL | https://arxiv.org/abs/patt-sol/9802002 |
| DOI | 10.1103/PhysRevLett.81.806 |
Abstract
We present experimental results for Rayleigh-Benard convection with rotation about a vertical axis at dimensionless rotation rates in the range 0 to 250 and upto 20% above the onset. Critical Rayleigh numbers and wavenumbers agree with predictions of linear stability analysis. For rotation rates greater than 70 and close to onset, the patterns are cellular with local four-fold coordination and differ from the theoretically expected Kuppers-Lortz unstable state. Stable as well as intermittent defect-free square lattices exist over certain parameter ranges. Over other ranges defects dynamically disrupt the lattice but cellular flow and local four-fold coordination is maintained.
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"abstract": "We present experimental results for Rayleigh-Benard convection with rotation\nabout a vertical axis at dimensionless rotation rates in the range 0 to 250 and\nupto 20% above the onset. Critical Rayleigh numbers and wavenumbers agree with\npredictions of linear stability analysis. For rotation rates greater than 70\nand close to onset, the patterns are cellular with local four-fold coordination\nand differ from the theoretically expected Kuppers-Lortz unstable state. Stable\nas well as intermittent defect-free square lattices exist over certain\nparameter ranges. Over other ranges defects dynamically disrupt the lattice but\ncellular flow and local four-fold coordination is maintained.",
"arxiv_id": "patt-sol/9802002",
"authors": [
"Kapil M. S. Bajaj",
"Jun Liu",
"Brian Naberhuis",
"Guenter Ahlers"
],
"categories": [
"patt-sol",
"nlin.PS"
],
"doi": "10.1103/PhysRevLett.81.806",
"title": "Square patterns in Rayleigh-Benard convection with rotation about a vertical axis",
"url": "https://arxiv.org/abs/patt-sol/9802002"
},
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