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-

Material type: 文書・図像類

Author: 三輪, 等ほか

Publisher: 航空宇宙技術研究所

Publication date: 1980-01

Material Format: Digital

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Note (General)：: In order to predict the control characteristics of the settling chamber pressure of the NAL Blowdown Type Two-Dimentional Transonic Wind Tunnel, which...

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Material Type: 文書・図像類
Title: 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-
Author/Editor: 三輪, 等
MIWA, Hitoshi
Author Heading: 三輪, 等
MIWA, Hitoshi
Publication, Distribution, etc.: 航空宇宙技術研究所
Publication Date: 1980-01
Publication Date (W3CDTF): 1980-01
Alternative Title: Investigation of the Components of the NAL High Reynods Number Two-Dimentional Wind Tunnel, Part III Numerical Simulation of the Settling Chamber Pressure Control
Periodical title: 航空宇宙技術研究所報告 = Technical Report of National Aerospace Laboratory TR-597
No. or year of volume/issue: 597
Volume: 597
Pages: 42-
ISSN (Periodical Title): ISSN : 0389-4010
Text Language Code: jpn
Target Audience: 一般
Note (General): 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％
資料番号: NALTR0597000
レポート番号: NAL TR-597
Source: https://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=44851&item_no=1&attribute_id=31&file_no=1
https://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=44851&item_no=1&attribute_id=31&file_no=1
Access Restrictions: 限定公開
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 宇宙航空研究開発機構 : 宇宙航空研究開発機構リポジトリ