The effects of density stratification and turbulence on the behavior of vortex rings and vortex pairs is investigated. The results of a vortex ring experiment, in which rings were injected into linear and discontinuous density stratifications, are compared with calculations of ring behavior made using an axisymmetric, unsteady solution of the modeled Reynolds stress equations. Second-order closure of the equations is based upon the invariant modeling technique of Donaldson. Comparisons are made for ring trajectories, radius, and size of the recirculation cell carried along with the ring, with excellent results. Calculations of turbulent vortex pairs descending into a stably stratified atmosphere for a range of Froude numbers from 1 to 10 are presented. (DePo)


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    Title :

    Turbulent vortices in stratified fluids


    Additional title:

    Turbulente Wirbel in laminaren Fluessigkeiten


    Contributors:
    Hecht, A.M. (author) / Bilanin, A.J. (author) / Hirsh, J.E. (author) / Snedeker, R.S. (author)

    Published in:

    Publication date :

    1979


    Size :

    17 Seiten, 17 Bilder, 1 Tabelle, 31 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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