Spiral defect chaos in large aspect ratio Rayleigh-Bénard convection

We report experiments on convection patterns in a cylindrical cell with a large aspect ratio. The fluid had a Prandtl number [sigma][approx]1. We observed a chaotic pattern consisting of many rotating spirals and other defects in the parameter range where theory predicts that steady straight rolls s...

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Published in:Physical review letters 1993-09, Vol.71 (13), p.2026-2029
Main Authors: MORRIS, S. W, BODENSCHATZ, E, CANNELL, D. S, AHLERS, G
Format: Article
Language:English
Subjects:
420400 - Engineering- Heat Transfer & Fluid Flow
ASPECT RATIO
Buoyancy-driven instability
Chaos
CONVECTION
DATA
ENERGY TRANSFER
ENGINEERING
Exact sciences and technology
EXPERIMENTAL DATA
Fluid dynamics
FLUID FLOW
Fundamental areas of phenomenology (including applications)
GEOMETRY
HEAT TRANSFER
HEATING
Hydrodynamic stability
INFORMATION
MASS TRANSFER
MATHEMATICS
NUMERICAL DATA
Physics
PRANDTL NUMBER
STOCHASTIC PROCESSES
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cited_by cdi_FETCH-LOGICAL-c409t-74a2d342f76f7bee3e301ae45c9eca94c47605d56b8be9c37f2e677c9522423e3
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container_issue 13
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container_title Physical review letters
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creator MORRIS, S. W
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description We report experiments on convection patterns in a cylindrical cell with a large aspect ratio. The fluid had a Prandtl number [sigma][approx]1. We observed a chaotic pattern consisting of many rotating spirals and other defects in the parameter range where theory predicts that steady straight rolls should be stable. The correlation length of the pattern decreased rapidly with increasing control parameter so that the size of a correlated area became much smaller than the area of the cell. This suggests that the chaotic behavior is intrinsic to large aspect ratio geometries.
doi_str_mv 10.1103/PhysRevLett.71.2026
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ispartof Physical review letters, 1993-09, Vol.71 (13), p.2026-2029
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recordid cdi_osti_scitechconnect_6248730
source American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list)
subjects 420400 - Engineering- Heat Transfer & Fluid Flow
ASPECT RATIO
Buoyancy-driven instability
Chaos
CONVECTION
DATA
ENERGY TRANSFER
ENGINEERING
Exact sciences and technology
EXPERIMENTAL DATA
Fluid dynamics
FLUID FLOW
Fundamental areas of phenomenology (including applications)
GEOMETRY
HEAT TRANSFER
HEATING
Hydrodynamic stability
INFORMATION
MASS TRANSFER
MATHEMATICS
NUMERICAL DATA
Physics
PRANDTL NUMBER
STOCHASTIC PROCESSES
title Spiral defect chaos in large aspect ratio Rayleigh-Bénard convection
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