並列タイトル等Numerical Treatment of Laminar Flow in Curved Rectangular Channels with Entrance Region
タイトル（掲載誌）航空宇宙技術研究所特別資料 = Special Publication of National Aerospace Laboratory SP-14
一般注記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
一次資料へのリンクURLhttps://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=43457&item_no=1&attribute_id=31&file_no=1
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
提供元機関・データベース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