Counterpropagating quasilinear wave packets in binary-fluid convection
- 26 October 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 69 (17) , 2519-2522
- https://doi.org/10.1103/physrevlett.69.2519
Abstract
I report observations of a new state of traveling-wave convection which consists of pairs of localized wave packets which propagate around an annular cell in opposite directions. During their periodic collisions, the wave packets experience a loss in amplitude due to nonlinear interaction which exactly compensates the linear gain they experience at other times. This leads to a regular, small-amplitude state with high phase and group velocities. This state offers the promise of being quantitatively explainable on first principles using the simplest model of coupled complex Ginzburg-Landau equations.Keywords
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