The Spatio-Temporal Structure of Spiral-Defect Chaos
Abstract
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 convection. We employ the modulus squared of the space-time Fourier transform of time series of two-dimensional shadowgraph images to construct the structure factor . This analysis is used to characterize the average spatial and temporal scales of the chaotic state. We find that the correlation length and time can be described by power-law dependences on the reduced Rayleigh number . These power laws have as yet no theoretical explanation.
Keywords
Cite
@article{arxiv.chao-dyn/9604013,
title = {The Spatio-Temporal Structure of Spiral-Defect Chaos},
author = {Stephen W. Morris and Eberhard Bodenschatz and David S. Cannell and Guenter Ahlers},
journal= {arXiv preprint arXiv:chao-dyn/9604013},
year = {2015}
}
Comments
RevTex 38 pages with 13 figures. Due to their large size, some figures are stored as separate gif images. The paper with included hi-res eps figures (981kb compressed, 3.5Mb uncompressed) is available at ftp://mobydick.physics.utoronto.ca/pub/MBCA96.tar.gz An mpeg movie and samples of data are also available at ftp://mobydick.physics.utoronto.ca/pub/. Paper submitted to Physica D