Rotating Convection in an Anisotropic System
Abstract
We study the stability of patterns arising in rotating convection in weakly anisotropic systems using a modified Swift-Hohenberg equation. The anisotropy, either an endogenous characteristic of the system or induced by external forcing, can stabilize periodic rolls in the K\"uppers-Lortz chaotic regime. For the particular case of rotating convection with time-modulated rotation where recently, in experiment, chiral patterns have been observed in otherwise K\"uppers-Lortz-unstable regimes, we show how the underlying base-flow breaks the isotropy, thereby affecting the linear growth-rate of convection rolls in such a way as to stabilize spirals and targets. Throughout we compare analytical results to numerical simulations of the Swift-Hohenberg equation.
Cite
@article{arxiv.nlin/0110041,
title = {Rotating Convection in an Anisotropic System},
author = {Alex Roxin and Hermann Riecke},
journal= {arXiv preprint arXiv:nlin/0110041},
year = {2009}
}