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空中垂下法によるグランドロープ形状の検討
http://hdl.handle.net/10232/14389
http://hdl.handle.net/10232/143899759f51d-54ce-4764-a560-0cff920e8599
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
AN00040498_v43n1_p11-20.pdf (743.6 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2015-04-30 | |||||
| タイトル | ||||||
| タイトル | 空中垂下法によるグランドロープ形状の検討 | |||||
| タイトル言語 | ja | |||||
| タイトル | ||||||
| タイトル | Considerations on a Shape of Groundrope obtained by Mechanical Simulation | |||||
| タイトル言語 | en | |||||
| 著者 |
不破, 茂
× 不破, 茂× 桜井, 広光× 今井, 健彦× 石崎, 宗周× 金, 碩鍾× 洪, 性完 |
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| 言語 | ||||||
| 言語 | jpn | |||||
| キーワード | ||||||
| 主題言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Groundrope | |||||
| キーワード | ||||||
| 主題言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Mechanical simulation | |||||
| キーワード | ||||||
| 主題言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Model net | |||||
| キーワード | ||||||
| 主題言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Trawl | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| 要約 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | This study deals with the shape of groundrope under the towing condition of bottom trawl net. The shape of groundrope depends on an equilibrium of three forces: fluid-dynamic resistance of netting, fluid-dynamic resistance of the groundrope and sliding frictional force against the sea bottom. It was assumed that the groundrope consisted of a connection of segments. The vertical, horizontal and tangential components were considered to be in equilibrium acting on the segment. The horizontal component acting on each segment of the groundrope was constant at any part. The spread of wing's end was fixed beforehand. The vertical component, acting on each segment of the groundrope, was calculated based on the relative ratio of netting area which was connected to each part of groundrope of the whole netting area. The shape of groundrope was analyzed based on the distribution of vertical components of segment. The model experiments were carried out using the method of mechanical simulation; and the model net was suspended on the vertical meshed board. The fluid-dynamical resistance of the net was simulated by equivalent weight secured at the end of lacing lines. The frictional forces was simulated by attaching equivalent to of the groundrope of the model net in water. And the shape of netting was simulated by rubber ballons fixed inside the trawl net. The shape of groundrope was expressed by the two dimensional coordinates using the grid of board with 2 cm scale. A close agreement was obtained between the analytical and mechanical simulated values in the shape of groundrope. | |||||
| 内容記述言語 | en | |||||
| 収録雑誌名 |
ja : 鹿児島大学水産学部紀要 en : Memoirs of Faculty of Fisheries Kagoshima University 巻 43, 号 1, p. 11-20, 発行日 1994-12-25 |
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| 作成日 | ||||||
| 日付 | 1994-12-25 | |||||
| 日付タイプ | Issued | |||||
| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| ISSN | 0453087X | |||||
| NII書誌ID（雑誌） | ||||||
| 収録物識別子タイプ | NCID | |||||
| NC ID | AN00040498 | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| NDC | ||||||
| 主題Scheme | NDC | |||||
| 主題 | 660 | |||||
| 公開者・出版者 | ||||||
| 出版者 | 鹿児島大学 | |||||
| 出版者言語 | ja | |||||
| 公開者・出版者 | ||||||
| 出版者 | Kagoshima University | |||||
| 出版者言語 | en | |||||
