Nonlinear square patterns in Rayleigh-Benard convection
- We numerically investigate nonlinear asymmetric square patterns in a horizontal convection layer with up-down reflection symmetry. As a novel feature we find the patterns to appear via the skewed varicose instability of rolls. The time-independent nonlinear state is generated by two unstable checkerboard (symmetric square) patterns and their nonlinear interaction. As the bouyancy forces increase the interacting modes give rise to bifurcations leading to a periodic alternation between a nonequilateral hexagonal pattern and the square pattern or to different kinds of standing oscillations.
| Author details: | Ayhan Demircan, Norbert SeehaferORCiD |
|---|---|
| URL: | http://www.edpsciences.com/articles/euro/full/2001/02/6376/6376.html |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2001 |
| Publication year: | 2001 |
| Release date: | 2017/03/24 |
| Source: | Europhysics Letters. - 53 (2001), 2, S. 202 - 208 |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| Publishing method: | Open Access |
| Institution name at the time of the publication: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik |
