WEKO3
アイテム
二次元風胴構成要素の研究(Ⅲ)-集合胴圧力制御のディジタルシミュレーション-
https://jaxa.repo.nii.ac.jp/records/44851
https://jaxa.repo.nii.ac.jp/records/44851d85fb61b-d593-4d03-9b90-e3e4b4621f0c
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
naltr00597.pdf (2.6 MB)
|
|
| Item type | テクニカルレポート / Technical Report(1) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2015-03-26 | |||||||||
| タイトル | ||||||||||
| タイトル | 二次元風胴構成要素の研究(Ⅲ)-集合胴圧力制御のディジタルシミュレーション- | |||||||||
| 言語 | ||||||||||
| 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 | Investigation of the Components of the NAL High Reynods Number Two-Dimentional Wind Tunnel, Part III Numerical Simulation of the Settling Chamber Pressure Control | |||||||||
| 著者 |
三輪, 等
× 三輪, 等
× MIWA, Hitoshi
|
|||||||||
| 著者所属 | ||||||||||
| 航空宇宙技術研究所空気力学第二部 | ||||||||||
| 著者所属（英） | ||||||||||
| en | ||||||||||
| Second Aerodynamics Division, National Aerospace Laboratory(NAL) | ||||||||||
| 出版者 | ||||||||||
| 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-597 巻 597, p. 42, 発行日 1980-01 |
|||||||||
| 抄録（英） | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | In order to predict the control characteristics of the settling chamber pressure of the NAL Blowdown Type Two-Dimentional Transonic Wind Tunnel, which can be operated at high Raynolds number up to 40×10(exp 6), a numerical simulation was carried out. In addition to the conventional operation of blowdown type wind tunnels, a new operational method which can be called a “precharged operation” is adopted for the starting process in this wind tunnel. This method makes the wind tunnel start with precharged air of nearly the same pressure as the operational settling chamber pressure. In this paper, the mathematical model for the wind tunnel and control system is described, and the result of the simulation study is presented and discussed. The result of the numerical simulation for the precharged operation are as follows. 1.In this control, the flow state in the wind tunnel changes moderately from an initial to a steady state and the transient overshoot of the settling chamber pressure which is usually observed in conventional blowdown wind tunnels, is not observed. Therefore the starting time is shorter for this operation than the conventional ones. 2.As the amount of compressed air in the tank, which is wasted before the flow is established, is smaller, the duration of the steady state is longer for the precharged operation than the conventional ones. 3.Control characteristics of the settling chamber pressure in this type of operation is quite satisfactory and predicted error of the control is within 0.3％ | |||||||||
| ISSN | ||||||||||
| 収録物識別子タイプ | ISSN | |||||||||
| 収録物識別子 | 0389-4010 | |||||||||
| 資料番号 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | 資料番号: NALTR0597000 | |||||||||
| レポート番号 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | レポート番号: NAL TR-597 | |||||||||
