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Phys. Rev. E 74, 037302 (2006) [4 pages]

Multiplicity of steady states in cylindrical Rayleigh-Bénard convection

Dong-Jun Ma, De-Jun Sun, and Xie-Yuan Yin
School of Engineering Science, University of Science and Technology of China, Hefei 230027, China
Received 13 June 2006; published 22 September 2006

Three-dimensional steady Rayleigh-Bénard convection in a vertical cylinder is investigated by numerical simulation and bifurcation analysis. The complex pattern formation beyond the onset of the convection is presented by a bifurcation diagram. The coexistence of multiple stable states is observed near the threshold of the first bifurcation and two group symmetries are summarized for the corresponding primary branches. The first stable target pattern originates through a subcritical bifurcation. A multiplicity of flow states for the Rayleigh number of 14  200 is validated numerically in comparison with the experiment, and a four-spoke pattern is observed.

©2006 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevE.74.037302
DOI: 10.1103/PhysRevE.74.037302
PACS: 47.20.Ky; 47.20.Bp; 47.54.-r
  • 47.20.Ky
    Nonlinearity (including bifurcation theory) (hydrodynamic stability)
  • 47.20.Bp
    Buoyancy-driven hydrodynamic instability
  • 47.54.-r
    Pattern selection; pattern formation
  • YEAR: 2006
KEYWORDS: Benard convection, flow simulation, bifurcation, pattern formation

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