可視化情報学会誌
Online ISSN : 1884-037X
Print ISSN : 0916-4731
ISSN-L : 0916-4731
B110 砂丘周りの流れの可視化
阿部 真憲李鹿 輝中野 政身
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ジャーナル フリー

2005 年 25 巻 Supplement1 号 p. 81-82

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The study of the formation and migration of sand dunes has a long history, but a sound understanding of the turbulent mechanisms behind dune has proved elusive. In this paper, in order to reveal the detailed vortical structures behind a three-dimensional dune, PIV measurements were performed in a circulating water channel with a constant free-stream velocity of 0.2 m/s. Instantaneous and time-averaged velocity distribution in the side and top planes were obtained and the complex reverse flow and eddies behind the dune were examined.
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