並列タイトル等Numerical Treatment of Laminar Flow in Curved Rectangular Channels with Inlet and Outlet Straight 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-16
一般注記Developing laminar fluid flow in a curved square duct with inlet and outlet straight regions was studied numerically by using finite difference method. A power law scheme, a control method were used inside the computational domain. In this study, three bends were calculated, two were a 90 degree bend, and one was a 180 degree bend. 90degrees bend flow had an one-pair vortex secondary flow but In the case of 180 degree bend, it had a two-pair vortex at higher degree regions than 120 degrees from the duct inlet, which was caused by centrifugal force instability. Experimental data, of Shirakami, Inoue (90 degrees bend) and Humphrey (90 degrees bend) and Hille ( 180 degrees bend) were compared with the calculated results. In the case of 90 degree bend, calculated results showed a good agreement with experimental results. In the case of 180 degree bend, it had also a good agreement, except the inlet and outlet region of the curved duct. This was considered that the inlet velocity was different from the experiment and we assumed that the duct flow had symmetric characteristics. However Hille's flow had an asymmetric vortex pattern across the duct section.
資料番号: NALSP0016031
レポート番号: NAL SP-16
一次資料へのリンクURLhttps://jaxa.repo.nii.ac.jp/?action=repository_action_common_download&item_id=43527&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