On the existence of steady periodic capillary-gravity stratified water waves

Abstract

We prove the existence of small steady periodic capillary-gravity water waves for general stratified flows, where we allow for stagnation points in the flow. We establish the existence of both laminar and non-laminar flow solutions for the governing equations. This is achieved by using bifurcation theory and estimates based on the ellipticity of the system, where we regard, in turn, the mass-flux and surface tension as bifurcation parameters.

17 pages, to appear in Ann. Scuola Norm. Sup. Pisa Cl. Sci