書誌事項
- タイトル別名
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- Observation of Packets of Oblique T-S Waves Trailing a Turbulent Spot in a Radial Liquid Film Flow.
- ホウシャジョウ エキマク ナガレ ノ ランリュウ ハンテン ニ ズイコウ スル シャコウT Sハグン ノ カンサツ
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This report describes the behavior of wave packets trailing an isolated turbulent spot produced in the laminar region of a radial liquid film flow. The liquid film flow was formed by a water discharge to the atmosphere from a thin cylindrical gap between a pipe end and a disk surface. The turbulent spot was produced by a pulse-like jet injection into the laminar flow through a small hole in the disk, and was observed by high-speed photography. Furthermore, the evolution of a pulse-like disturbance, which was added to the basic flow, was analyzed by the finite difference method with VOF method. It was found that the strong turbulence of the spot results in the generation of a pair of oblique wave packets on both sides of the spot and the amplified wave packets break down to new turbulent patches. It was also found that the group velocity of the wave packet is 1.4 times as large as the phase velocity of oblique disturbance wave which is equal to the ordinary disturbance wave.
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 66 (644), 954-961, 2000
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
- 1390282681159479424
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- NII論文ID
- 110002392951
- 130004223785
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- NII書誌ID
- AN00187441
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- ISSN
- 18848346
- 03875016
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- NDL書誌ID
- 5362059
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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
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可