| Item type |
紀要論文 / Departmental Bulletin Paper(1) |
| 公開日 |
2015-03-26 |
| タイトル |
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|
タイトル |
亂れの減衰に關する一寄與 : 初期亂れの影響に就いて |
| 言語 |
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|
言語 |
jpn |
| 資源タイプ |
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|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
departmental bulletin paper |
| その他のタイトル（英） |
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|
その他のタイトル |
A Contribution to the study of the decay of wind-tunnel turbulence |
| 著者 |
濱, 良助
三石, 智
恩田, 善雄
Hama, Ryosuke
Mitsuisi, Satosi
Onda, Yosio
|
| 著者所属（英） |
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|
en |
|
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Res. Inst., Tokyo Imp. Univ. |
| 著者所属（英） |
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|
en |
|
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Res. Inst., Tokyo Imp. Univ. |
| 著者所属（英） |
|
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|
en |
|
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Res. Inst., Tokyo Imp. Univ. |
| 出版者 |
|
|
出版者 |
東京帝國大學航空研究所 |
| 書誌情報 |
東京帝國大學航空研究所彙報
巻 245,
p. 25-35,
発行日 1945-01
|
| 抄録（英） |
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|
内容記述タイプ |
Other |
|
内容記述 |
The present tests were undertaken to investigate the effect of initial turbulence on tht decay of turbulence produced by a fine mesh grid. Initial turbulence was produced by another large mesh grid. Mesh length of up- and downstream grid were 10.1mm and 1.1mm, and their wire diameters 2.1 and 0.2mm respectively. Distances between two grids were 20, 40 and 70cm. Turbulence intensity measurements behind downstream grid were performed by means of so-called, "heat diffusion method". From the results of the tests, the remarkable effects of the initial turbulence on the intensity and the decay of turbulence produced by the fine mesh grid were confirmed. In appendix, utilizing the rapid decay.of turbulence produced by fine mesh grid the intensity of turbulence of the 1.5mm wind-tunnel of the Institute was reduced, 1mm mesh length grid being inserted downstream of equalizer. The intensity of turbulence and the transition point of the laminar boundary layer along a flat plat were measured. The intensity was reduced from 0.3% to 0.19%, and Reynolds Number Vx/v at the transition point was raised from 1.87×10^6 to 2.14×10^6. |
| 書誌レコードID |
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収録物識別子タイプ |
NCID |
|
収録物識別子 |
AN00162779 |
| 資料番号 |
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|
内容記述タイプ |
Other |
|
内容記述 |
資料番号: SA4416082000 |
SA4416082.pdf (877.3 kB)
