A.G.Boev, N.N.Yasnitskaia Damping coefficient of surface waves under a surface-active substance film of the finite hydrodynamic thickness |
Applied hydromechanics, Vol. 4 (76) ¹ 4, (2002) |
| The problem on rough sea under a surface - active substance film, which thickness much less as compared with a surface wave length was considered. The dispersion equation for a complex frequency of waves was founded and one solved it in case when the film thickness much less compared with one of a wave viscous layer in the film. It was shown, the film with a little limited thickness add two new details to a mechanism of a wave dam-ping of one a naught thickness film. It is a sliding of the film boundaries relatively each other what involved an essential weakening of an extinction of capillary and short gravity surface waves. It is the damping influence of the film substance viscosity, which involved to a not great intensification of the damping of gravity waves. The numerical analysis was conducted for oil typical parameters. |
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KEY WORDS: *** |
| TEXT LANGUAGE: Russian |