| 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 |
プラグノズルのボートテールドラッグ低減に関する一考察 |
| 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_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 Study of the Boat-tail Drag of the Plug Nozzle |
| 著者 |
藤井, 孝藏
佐藤, 哲也
Fujii, Kouzou
Sato, Tetsuya
|
| 著者所属 |
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|
宇宙科学研究所 |
| 著者所属 |
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|
宇宙科学研究所 |
| 著者所属（英） |
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|
en |
|
|
Institute of Space and Astronautical Science (ISAS) |
| 著者所属（英） |
|
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|
en |
|
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Institute of Space and Astronautical Science (ISAS) |
| 出版者 |
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出版者 |
宇宙科学研究所 |
| 出版者（英） |
|
|
出版者 |
Institute of Space and Astronautical Science |
| 書誌情報 |
宇宙科学研究所報告. 特集: ATREXエンジンの研究開発
巻 46,
p. 191-202,
発行日 2003-03
|
| 抄録（英） |
|
|
内容記述タイプ |
Other |
|
内容記述 |
Flow fields over annular plug nozzles of the air breathing engines are computationally simulated and the boat-tail drag characteristics are clarified and discussed based on the simulation results. First, the simulations are carried out for the axi-symmetric nozzle configuration using compressible Navier-Stokes equations. The result shows that primary cause of the boat-tail drag turns out to be the low pressure region downstream of the Prandtl-Meyer expansion. Next, the flow field with the axisymmetric slit injection is simulated. The computed result shows that the secondary flow injection successfully reduces the boat-tail drag. The effect of the secondary flow injection through the clustered slots with the sonic condition given at the slot exits on the boat-tail surface is next investigated and the result is compared to that of the axisymmetric slit injection. The result for the clustered slot injection shows that the boat-tail drag is reduced by about 40%. Effect of the secondary flow injection demonstrated by the simplified axisymmetric simulations is still larger for the clustered slot injection. The flow field with the secondary-flow injected directly from the inner nozzle is next investigated. Comparison of the results for the secondary flow injected directly from the inner nozzle and for the secondary flow given as a sonic condition at the exit shows that there is little difference in the flow structure and the pressure distributions over the boat-tail region. |
| ISSN |
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|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
0285-9920 |
| 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 |
AN00354485 |
| 資料番号 |
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|
内容記述タイプ |
Other |
|
内容記述 |
資料番号: SA0200123000 |
SA0200123.pdf (1.2 MB)
