Fluids, vortex sheets, and skew-mean-curvature flows
Boris Khesin (University of Toronto)
MSRI: Simons Auditorium
We show that an approximation of the hydrodynamical Euler equation describes the skew-mean-curvature flow on vortex membranes in any dimension. This generalizes the classical binormal, or vortex filament, equation in 3D. We present a Hamiltonian framework for higher-dimensional vortex filaments and vortex sheets as singular 2-forms with support of codimensions 2 and 1, respectively.
This framework, in particular, allows one to define symplectic structures on the spaces of vortex sheets.