Transitions in a stratified Kolmogorov flow
- Authors: Ponetti, G.; Sammartino, M.; Sciacca, V.
- Publication year: 2017
- Type: Articolo in rivista (Articolo in rivista)
- OA Link: http://hdl.handle.net/10447/198375
Abstract
We study the Kolmogorov flow with weak stratification. We consider a stabilizing uniform temperature gradient and examine the transitions leading the flow to chaotic states. By solving the equations numerically we construct the bifurcation diagram describing how the Kolmogorov flow, through a sequence of transitions, passes from its laminar solution toward weakly chaotic states. We consider the case when the Richardson number (measure of the intensity of the temperature gradient) is $Ri=10^-5$, and restrict our analysis to the range $0