| Item type |
テクニカルレポート / Technical Report(1) |
| 公開日 |
2015-03-26 |
| タイトル |
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|
タイトル |
貯気槽-有孔板法によるルートビーク管の持続時間の延長-理論解析と数値実験- |
| 言語 |
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|
言語 |
jpn |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_18gh |
|
資源タイプ |
technical report |
| その他のタイトル（英） |
|
|
その他のタイトル |
An Extension of the Useful Running Time in a Ludwieg Tube by a Reservoir-Orifice Method. |
| 著者 |
青木, 竹夫
高島, 一明
AOKI, Takeo
TAKASHIMA, Kazuaki
|
| 著者所属 |
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航空宇宙技術研究所空気力学第二部 |
| 著者所属 |
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航空宇宙技術研究所空気力学第二部 |
| 著者所属（英） |
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|
en |
|
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Second Aerodynamics Division, National Aerospace Laboratory(NAL) |
| 著者所属（英） |
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en |
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Second Aerodynamics Division, National Aerospace Laboratory(NAL) |
| 出版者 |
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出版者 |
航空宇宙技術研究所 |
| 出版者（英） |
|
|
出版者 |
National Aerospace Laboratory(NAL) |
| 書誌情報 |
航空宇宙技術研究所報告
en : Technical Report of National Aerospace Laboratory TR-612
巻 612,
p. 22,
発行日 1980-05
|
| 抄録（英） |
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内容記述タイプ |
Other |
|
内容記述 |
A reservoir-orifice method is described, with extends the useful running time of a Ludwieg tube by using a reservoir and an orifice(nozzle)at the upstream end of the storage tube. The method has been called “driver-reservoir method”and it is used to expand the running time of a shock tube. For a unique or optimum area ratio of an orifice, velocity and pressure of the flow after steady expansion at an orifice will be the same as that of the flow behind the unsteady expansion wave in the storage tube. At that time, the weakest reflected wave from the orifice will be obtained. Furthermore, when the area ratio of an orifice is timely controlled, the effect of a reflected wave is expected to be less than that of the fixed area ratio. Firstly, the case of constant area ratio is treated. The equation which gives the optimum area ratio is theoretically derived by using the relations of one-dimensional steady flow and unsteady one. Using the method of characteristics, a numerical simulation of nozzle-reservoir flow system has been carried out. The result of the numerical simulation was compared with the result of a theoretical equation. We got good correlation between the result of the theory and that of the numerical simulation. Secondly, the numerical simulation for variable are ratio of a nozzle is presented to obtain the optimum control parameters of the area ratio of the nozzle. |
| ISSN |
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収録物識別子タイプ |
ISSN |
|
収録物識別子 |
0389-4010 |
| 資料番号 |
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内容記述タイプ |
Other |
|
内容記述 |
資料番号: NALTR0612000 |
| 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: NAL TR-612 |
naltr00612.pdf (1.0 MB)
