2015年5月
Hydrodynamic characteristics of a hyper-lift otter board with wing-end plates
FISHERIES SCIENCE
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- 巻
- 81
- 号
- 3
- 開始ページ
- 433
- 終了ページ
- 442
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1007/s12562-015-0873-8
- 出版者・発行元
- SPRINGER JAPAN KK
The paper investigates the hydrodynamic characteristics of a hyper-lift trawl door (HLTD), which consists of a cambered plate with two wing-end plates with the leading edge modified into an airfoil shape. Flume experiments were carried out in a circulating water tank using models having a wing area of 625 cm(2) and an aspect ratio of 1.0 at camber ratios of 15, 20, and 25 %. To determine the effect of the wing-end plates, models with different size of wing-end plates were tested. Moreover, the effect of heel angle on the hydrodynamic characteristics of the HLTD was also investigated. We concluded that the size of the wing-end plate was significant for h/c = 0.10 (h width of the wing-end plate, c chord length of cambered plate), and the maximum lift coefficients of HLTDs with camber ratios of 15, 20 and 25 % were 2.19, 2.38, and 2.48, respectively, at an attack of angle of 38A degrees. In addition, our findings showed that the effect of the heel angle was very small on the lift, drag and moment coefficients of a HLTD when it slants at heel angles from -20A degrees to 20A degrees during trawling.
- リンク情報
- ID情報
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- DOI : 10.1007/s12562-015-0873-8
- ISSN : 0919-9268
- eISSN : 1444-2906
- Web of Science ID : WOS:000354194100003