書誌事項
- タイトル別名
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- Observation and Simulation of a Tollmien-Schlichting Wave Packet Produced in a Radial Liquid Film Flow
- ホウシャジョウ エキマク ナガレ ニ ケイセイ サレタ トルミーン シュリヒティング ハグン ノ キョドウ カンサツ ト シミュレーション
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The formation, development and breakdown of a Tollmien-Schlichting wave packet have been investigated in a radial liquid film flow. The liquid film flow was formed of water discharged to the atmosphere from a narrow cylindrical gap between the end of a vertical pipe and the surface of a horizontally placed disk. The wave packet was generated artificially by an extremely weak pulselike jet, which was injected into the laminar region of the liquid film flow through a small hole in the disk, and observed by means of high-speed photography. In addition to the observation, downstream development of the linear wave packet was calculated on the basis of a linear stability theory. For both the shape of the linear wave packet and the manner of the wave packet spreading outward on the way downstream, the calculation gave a good agreement with the experimental result. The group velocity of the wave packet was about 1.4 times as large as the phase velocity of the ordinary T-S wave. The experimental observation enabled us to make clear the process of breakdown of the wave packet to a turbulent spot and the process of formation of a pair of the oblique T-S wave packets trailing along behind the turbulent spot.
収録刊行物
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- 日本機械学会論文集B編
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日本機械学会論文集B編 73 (727), 711-719, 2007
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390001206261030912
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- NII論文ID
- 130004226050
- 110006271355
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- NII書誌ID
- AN00187441
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- ISSN
- 18848346
- 03875016
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- NDL書誌ID
- 8758806
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可