Spiral defect chaos in Rayleigh-Bénard convection

摘要: Motivated by recent experiments on Rayleigh-B\'enard convection, where spiral defect chaos was discovered, we have simulated the Boussinesq equations for appropriate Rayleigh numbers not far from threshold large aspect ratio systems using a Galerkin method. A detailed analysis of results reproduces experimental findings almost quantitatively. critical comparison with model calculations is also presented. Our investigations show that new spatiotemporal pattern must be considered generic convection.