Multistability of the Roller Structures of Parametrically Excited Capillary Waves in the Case of Polygonal Boundaries

Resumo

We experimentally study the dynamics of the roller structures of the parametrically excited capillary waves with polygonal boundaries. The possibility of existence of many stable roller regimes, which differ only by the roller orientation in space, is revealed. Their stability in the case of the roller angular deviation from the equilibrium state is studied. The model of the observed phenomenon is proposed. The numerical calculations performed on the basis of this model are in good agreement with experimental results.