Volume 112, Number 1, October 2015
|Number of page(s)||6|
|Section||Geophysics, Astronomy and Astrophysics|
|Published online||27 October 2015|
Multiple surface wave solutions on linear viscoelastic media
Department of Physics, Freie Universität Berlin - 14195 Berlin, Germany
Received: 28 August 2015
Accepted: 7 October 2015
We study the generic dispersion relation of surface waves on a semi-infinite viscoelastic medium bounded by a 2D viscoelastic interface, including the effects of gravitation, surface tension and bending rigidity. The classical Rayleigh, capillary-gravity and Lucassen wave solutions result as limiting cases. We identify an additional solution that differs from all previously described waves in that gravitation, surface tension and bulk shear viscosity must simultaneously be nonzero, and which exists on a pure air-water interface. For a surfactant monolayer on water, the number of coexisting wave solutions switches between one and three, depending on interfacial compressibility and frequency.
PACS: 91.30.Fn – Surface waves and free oscillations / 46.40.-f – Vibrations and mechanical waves / 62.30.+d – Mechanical and elastic waves; vibrations
© EPLA, 2015
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