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Abstract: | Vortex spirals are ubiquitous in fluid flow, for example as turbulent eddies or as trailing vortices at aircraft wings. We consider solutions of the 2d incompressible Euler equations that have vorticity stratifying into algebraic spirals. The solutions are
selfsimilar: velocity $v(t,x)=t^{m-1}v^(t^{-m}x)$, for similarity exponent $\frac12 | || Close window || |