Transactions of the Visualization Society of Japan
Online ISSN : 1346-5260
ISSN-L : 1346-5252
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Volume 23, Issue 12
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Scientific Papers
  • Observation of Dragonfly Flying in Air and Flow
    Hiroaki MOCHIZUKI, Hirofumi KOMAKI, Makoto MORITA, Izumi KUSAMICHI
    Article type: Reviews
    Subject area: Visualization Information Technology
    2003 Volume 23 Issue 12 Pages 115-121
    Published: 2003
    Released on J-STAGE: December 31, 2003
    DOIhttps://doi.org/10.3154/tvsj.23.115
    JOURNAL FREE ACCESS
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    The flapping of a dragonfly, Pantara flavescense, horizontally flying in a field was observed with a high speed video camera. As a result, it was clarified that a frequency of the flapping with maximum amplitude in the observation was the same order as one of the flapping in a wind tunnel. Also, it was observed that vortices regularly occurred every one cycle by flapping with large amplitude in the wind tunnel and diverged downstream with combining each other. The flow upstream of the dragonfly flapping was induced in three forms of curved flow lines into the region around the body. Furthermore, wakes were generated in horizontal, downward and upward directions according to these forms.
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