Tuesday, September 18, 2012

1209.3738 (Vladimir Kozlov et al.)

No steady water waves of small amplitude are supported by a shear flow
with still free surface
   [PDF]

Vladimir Kozlov, Nikolay Kuznetsov
The two-dimensional free-boundary problem describing steady gravity waves with vorticity on water of finite depth is considered. It is proved that no small-amplitude waves are supported by a horizontal shear flow whose free surface is still in a coordinate frame such that the flow is time-independent in it. The class of vorticity distributions for which such flows exist includes all positive constant distributions, as well as linear and quadric ones with arbitrary positive coefficients.
View original: http://arxiv.org/abs/1209.3738

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