On the dynamics of two point vortices in an annular region

    2010, Vol. 6, No. 3, pp.  531-547

    Author(s): Vaskin V. V., Erdakova N. N.

    In this paper, the system of two vortices in an annular region is shown to be integrable in the sense of Liouville. A few methods for analysis of the dynamics of integrable systems are discussed and these methods are then applied to the study of possible motions of two vortices of equal in magnitude intensities. Using the previously established fact of the existence of relative choreographies, the absolute motions of the vortices are classified in respect to the corresponding regions in the phase portrait of the reduced system.
    Keywords: point vortex, reduction, equations of motion, bifurcational diagram, relative choreographies, vortex pair
    Citation: Vaskin V. V., Erdakova N. N., On the dynamics of two point vortices in an annular region, Rus. J. Nonlin. Dyn., 2010, Vol. 6, No. 3, pp.  531-547

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