4 papers
Competition between Spiral-Defect Chaos and Rolls in Rayleigh-Benard Convection
Kapil M. S. Bajaj, David S. Cannell, Guenter Ahlers
We present experimental results for pattern formation in Rayleigh-Benard convection of a fluid with a Prandtl number, Pr~ 4. We find that the spiral-defect-chaos (SDC) attractor wh…
The Spatio-Temporal Structure of Spiral-Defect Chaos
Stephen W. Morris, Eberhard Bodenschatz, David S. Cannell +1
We present a study of the recently discovered spatially-extended chaotic state known as spiral-defect chaos, which occurs in low-Prandtl-number, large-aspect-ratio Rayleigh-Benard…
Thermally Induced Fluctuations Below the Onset of Rayleigh-Bénard Convection
Mingming Wu, Guenter Ahlers, David S. Cannell
We report quantitative experimental results for the intensity of noise-induced fluctuations below the critical temperature difference for Rayleigh-Bénard convection. The str…
Spiral Defect Chaos in Large Aspect Ratio Rayleigh-Benard Convection
Stephen W. Morris, Eberhard Bodenschatz, David S. Cannell +1
We report experiments on convection patterns in a cylindrical cell with a large aspect ratio. The fluid had a Prandtl number of approximately 1. We observed a chaotic pattern consi…