The present comparative study of two different, but complementary flow-visualization techniques, which yield different interpretations of vortex-migration distance and lifetime, gives attention to the difficulty of determining vortex evolution and lifetime from flow-visualization measurements. The techniques involved the release of a fluorescent dye and of neutrally buoyant particles in a water-filled towing tank. Vortices are found to migrate farther, and last longer, when visualized with neutrally buoyant particles rather than with dyes.


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    Title :

    Measurements and implications of vortex motions using two flow-visualization techniques


    Contributors:

    Published in:

    Publication date :

    1990-11-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English





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