The viscous modulation of Lamb’s dipole vortex

B.W. van de Fliert

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    A description of the adiabatic decay of the Lamb dipolar vortex is motivated by a variational characterization of the dipole. The parameters in the description are the values of the entrophy and linear momentum integrals, which change in time due to the dissipation. It is observed that the dipole dilates during the decay process [radius R∼(νt)1/2], while the amplitude of the vortex and its translation speed diminish in time proportional to (νt)−3/2 and (νt)−1.
    Original languageEnglish
    Pages (from-to)1975-1977
    JournalPhysics of fluids
    Issue number7
    Publication statusPublished - 1996


    • METIS-200562


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