| アイテムタイプ |
会議発表論文 / Conference Paper(1) |
| 公開日 |
2017-05-01 |
| タイトル |
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|
タイトル |
Recent findings on stream-wise fluidelastic instability and its application |
|
言語 |
en |
| 言語 |
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|
言語 |
eng |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Fluidelastic Instability |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Stream-wise Instability |
| キーワード |
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|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Power Generation |
| 資源タイプ |
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|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_5794 |
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資源タイプ |
conference paper |
| 著者 |
中村, 友道
Mureithi, Njuki
Nakamura, Tomomichi
Mureithi, Njuki
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| 著者所属 |
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大阪産業大学 |
| 著者所属 |
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Polytechnique Montreal |
| 著者所属（英） |
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en |
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Osaka Sangyo University |
| 著者所属（英） |
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|
en |
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Polytechnique Montreal |
| 出版者 |
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出版者 |
宇宙航空研究開発機構(JAXA) |
| 出版者（英） |
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出版者 |
Japan Aerospace Exploration Agency (JAXA) |
| 書誌情報 |
宇宙航空研究開発機構特別資料
en : JAXA Special Publication: Proceedings of the First International Symposium on Flutter and its Application
巻 JAXA-SP-16-008E,
p. 565-574,
発行日 2017-03-15
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| 会議概要（会議名, 開催地, 会期, 主催者等）（英） |
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内容記述タイプ |
Other |
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内容記述 |
First International Symposium on Flutter and its Application (May 15-17, 2016. Mielparque-tokyo), Minato-ku, Tokyo, Japan |
| 抄録（英） |
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内容記述タイプ |
Other |
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内容記述 |
The stream-wise fluidelastic instability of tube arrays has recently been in the limelight due to the practical problem of an event in a steam generator in 2012. Although fluidelastic instability has been studied by many investigators for many years since at least 1968, it has been considered to occur mainly in the transverse direction in steam generators; although the possibility of stream-wise instability may have been anticipated, at least theoretical. Following the confirmation of its existence in the U-bend region of a steam-generator in 2005, some experimental studies have been conducted by a few researchers. This paper summarizes these experimental studies on stream-wise fluidelastic instability of tube arrays with the added aim of providing suggestions for future theoretical and experimental studies on this phenomenon. The work reviewed here may be summarized as follows: (1) Triangular arrays are easily susceptible to stream-wise fluidelastic instability. The same instability is not observed in square arrays, although the transverse fluidelastic instability is observed in both arrays. (2) The number of adjacent flexible cylinders plays an important role; for instance, a single flexible cylinder is found to be stable in the stream-wise direction even in triangular arrays. On the other hand tests show stream-wise instability even in the case of non-adjacent (separated) flexible cylinders. (3) Some experimental tests show the existence of stream-wise instability in two-phase flow, but other tests in water flow show no instability. In air tests stream-wise fluidelastic instability occurs easily. In the last part of this paper, an attempt to generate power by the stream-wise fluidelastic fluidelastic instability is introduced. While it is not considered enough for practical use, the results do confirm the existence of a limit cycle and hence the possibility of energy extraction from the flow. |
| 内容記述 |
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内容記述タイプ |
Other |
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内容記述 |
形態: カラー図版あり |
| 内容記述（英） |
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内容記述タイプ |
Other |
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内容記述 |
Physical characteristics: Original contains color illustrations |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
1349-113X |
| 書誌レコードID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA11984031 |
| 資料番号 |
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内容記述タイプ |
Other |
|
内容記述 |
資料番号: AA1630046060 |
| レポート番号 |
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内容記述タイプ |
Other |
|
内容記述 |
レポート番号: JAXA-SP-16-008E |
AA1630046060.pdf (1.0 MB)
