Vortices, circumfluence, symmetry groups and Darboux transformations of the (2+1)-dimensional Euler equation

Details Vortices, circumfluence, symmetry groups and Darboux transformations of the (2+1)-dimensional Euler equation Vortices, circumfluence, symmetry groups and Darboux transformations of the (2+1)-dimensional Euler equation

2008-03-02

arxiv.org/abs/0803.0111v1

Phys. Rev. E 75 (2007) 056318

Nonlinear Sciences

Pattern Formation and Solitons

25 pages, 9 figures

Scientific paper

10.1103/PhysRevE.75.056318

The Euler equation (EE) is one of the basic equations in many physical fields such as fluids, plasmas, condensed matter, astrophysics, oceanic and atmospheric dynamics. A symmetry group theorem of the (2+1)-dimensional EE is obtained via a simple direct method which is thus utilized to find \em exact analytical \rm vortex and circumfluence solutions. A weak Darboux transformation theorem of the (2+1)-dimensional EE can be obtained for \em arbitrary spectral parameter \rm from the general symmetry group theorem. \rm Possible applications of the vortex and circumfluence solutions to tropical cyclones, especially Hurricane Katrina 2005, are demonstrated.

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