On steady flows with Lamb surfaces
Lamb surfaces, which contain both stream lines and vorticity lines, are shown to exist for any smoothly-deforming continuum whose Eulerian vorticity is steady and is proportional to the \textit{curl} of the acceleration vector. These two conditions are realized in steady flows with material vorticity lines, for which Lamb surfaces provide a complete topological classification in terms of tori and cylinders when the flow domain is bounded.
scientific article; zbMATH DE number 1162164
scientific article