可視化情報学会誌
Online ISSN : 1884-037X
Print ISSN : 0916-4731
ISSN-L : 0916-4731
複雑内部流れ場における渦構造の同定
古川 雅人山田 和豊才木 一寿井上 雅弘
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2002 年 22 巻 1Supplement 号 p. 107-110

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Two type methods for identifying vortex structure have been applied to a complex internal flow field in engineering application. One defines the vortex core by the pressure minimum in the flow field. The other identifies the vortex axis by a semi-analytic method based on the critical-point theory. The latter is found to capture the vortex core sharply in spite of the large pressure gradient in the main stream. The distribution of normalized helicity along the vortex core identified is very useful in investigating the nature of the vortex quantitatively.

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