Secondary Instabilities of Surface Waves on Viscous Fluids in the Faraday Instability

摘要: Secondary instabilities of Faraday waves show three regimes: (1) As seen previously, low-viscosity (nu) fluids destabilize first into squares. At higher driving accelerations a, squares low-frequency modulations corresponding to the motion phase defects, while theory predicts a stationary transverse amplitude modulation (TAM). (2) High-nu stripes. Stripes then an oscillatory TAM whose frequency is incommensurate with frequency. undergoes instability. still edge dislocations form and fluid droplets are ejected. (3) Intermediate-nu complex coexistence stripes, as well