助走区間を含めた矩形曲り管内の流れの数値解析

Material type: 文書・図像類

Author: 山田, 仁ほか

Publisher: 航空宇宙技術研究所

Publication date: 1990-11

Material Format: Digital

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Note (General)：: Developing laminar fluid flow in a curved square duct is studied numerically by using finite difference method. A power law scheme, the control volume...

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Material Type: 文書・図像類
Title: 助走区間を含めた矩形曲り管内の流れの数値解析
Author/Editor: 山田, 仁
石垣, 博
望月, 宗和
Yamada, Hitoshi
Ishigaki, Hiroshi
Mochizuki, Munekazu
Author Heading: 山田, 仁
石垣, 博
望月, 宗和
Yamada, Hitoshi
Ishigaki, Hiroshi
Mochizuki, Munekazu
Publication, Distribution, etc.: 航空宇宙技術研究所
Publication Date: 1990-11
Publication Date (W3CDTF): 1990-11
Alternative Title: Numerical Treatment of Laminar Flow in Curved Rectangular Channels with Entrance Region
Periodical title: 航空宇宙技術研究所特別資料 = Special Publication of National Aerospace Laboratory SP-14
No. or year of volume/issue: 14
Volume: 14
Pages: 153-158
ISSN (Periodical Title): ISSN : 0289-260X
Text Language Code: jpn
Target Audience: 一般
Note (General): Developing laminar fluid flow in a curved square duct is studied numerically by using finite difference method. A power law scheme, the control volume method is used inside the computational domain. In this study, Dean number, which is based upon the inlet bulk velocity, curvature ratio is from 100 to 500, and an aspect ratio of the duct is 1.0 and the curvature ratio is 10.0. Developing flow has a one-pair vortex secondary flow with Dean number 100, but in the case of Dean number 500, it has a two-pair vortex flow pattern at higher degree regions than 65 degrees from the duct inlet, which is caused by centrifugal force instability. Experimental data of Hille et al., is compared with the computer calculations and it has a good agreement with experimental results, except the inlet and the outlet region of the curved duct. This reason is considered that our inlet velocity is different from the experiment and we assume that the duct flow has a symmetric characteristics. However, Hill's flow has an asymmetric vortex pattern near the duct outlet regions.
資料番号: NALSP0014024
レポート番号: NAL SP-14
Access Restrictions: 限定公開
Periodical Title (NCID): AN10097345
https://ci.nii.ac.jp/ncid/AN10097345
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