Localised edge states nucleate turbulence in extended plane Couette cells
Fluid Dynamics
2015-05-14 v1
Abstract
We study the turbulence transition of plane Couette flow in large domains where localised perturbations are observed to generate growing turbulent spots. Extending previous studies on the boundary between laminar and turbulent dynamics we determine invariant structures intermediate between laminar and turbulent flow. In wide but short domains we find states that are localised in spanwise direction, and in wide and long domains the states are also localised in downstream direction. These localised states act as critical nuclei for the transition to turbulence in spatially extended domains.
Keywords
Cite
@article{arxiv.0909.0530,
title = {Localised edge states nucleate turbulence in extended plane Couette cells},
author = {TM Schneider and D Marinc and Bruno Eckhardt},
journal= {arXiv preprint arXiv:0909.0530},
year = {2015}
}
Comments
15 pages, 5 figures