Spiral defect chaos in Rayleigh-Bénard convection
1994; American Physical Society; Volume: 73; Issue: 5 Linguagem: Inglês
10.1103/physrevlett.73.648
ISSN1092-0145
AutoresW. Decker, W. Pesch, Andreas Weber,
Tópico(s)Fluid Dynamics and Thin Films
ResumoMotivated by recent experiments on Rayleigh-B\'enard convection, where spiral defect chaos was discovered, we have simulated the Boussinesq equations for the appropriate Rayleigh numbers not far from threshold for large aspect ratio systems using a Galerkin method. A detailed analysis of the results reproduces the experimental findings almost quantitatively. A critical comparison with recent model calculations is also presented. Our investigations show that the new spatiotemporal pattern must be considered generic for Rayleigh-B\'enard convection.
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