Analysis of Unsteady Wave Field Generated by Ships

船舶产生的非定常波场分析

• 批准号: 04452218
• 负责人: NAITO Shigeru
• 金额: $ 4.1万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04452218/
• 关键词: unsteady wave field; added resistance; wave profile; singularity distribution; 波の写真撮影; 画像解析; 画像処理; 振幅関数

Research results of this project are as follows.1. Rectangular small tank with wave generator and video camera system is completed.2. Analysis method of video films has been established. By using this method, wave profiles and wave pattern can be obtained by the video film.3. An impulsive wave profile which has a large steepness has turned to be obtained every very small time step.4. The developed analysis method has a fiexible performance. A few applied examples are shown.5. Mutual ralation among singularity distribution, unsteady wave field and added resistance has been made clear.

本课题的研究成果如下：1.完成了带有波浪发生器和摄像系统的矩形小型水池.建立了视频影片的分析方法。利用这种方法，可以通过视频胶片获得波形和波形图.每隔很小的时间步就可以得到一个陡度很大的脉冲波形.所开发的分析方法具有灵活性。给出了几个应用实例.明确了奇异性分布、非定常波场和附加阻力之间的相互关系。

项目成果

SHIGERU NAITO: "A Breif Report on the Relation between an Isolated Singularity and an Unsteady Wave Field" Proceedings fo The Second Japan-Korea Joint Workshop on Ship and Marine Hydrodynamics. 53-59 (1993)

SHIGERU NAITO：“关于孤立奇点与非稳定波场之间关系的简要报告”第二届日韩船舶与海洋流体动力学联合研讨会论文集。

Shigeru NAITO: ""Brief Report on the Relation between an Isolated Singularity and an Unsteady Wave Field"" Proc.of the 2nd Japan-Korea Joint Workshop on Ship and Marine Hydrodynamics. 53-59 (1993)

Shigeru NAITO：“关于孤立奇点与非稳定波场之间关系的简要报告”，第二届日韩船舶与海洋流体动力学联合研讨会论文集。

内藤 林 木原 一 西村 直章: "短波長波中における大型船の船側内外に働く変動荷重" 関西造船協会誌. 224. (1995)

Naito、Hayashi、Hajime Kihara 和 Naoaki Nishimura：“短波长波浪期间作用于大型船舶内部和外部的可变载荷”《关西造船协会杂志》224。（1995 年）

Shigeru NAITO,Hajime KIHARA,Naoaki NISHIMURA: ""Wave Loads Acting on the Side Shells of Large Ships in Very Short Wave Length"" J.of Kansai Soc.of Naval Arch., Japan. No.224 (will be published). 1-9 (1995)

Shigeru NAITO、Hajime KIHARA、Naoaki NISHIMURA：““非常短波长作用于大型船舶舷侧的波浪载荷””J.of Kansai Soc.of Naval Arch.，日本。

Shigeru NAITO: ""Brief Report on the Relation between an Isolated Singularity and an Unslosdy Wave Feild"" Proc.of the 2nd Japan-Korea Joint Workshop on Ship and Marine Hydrodynamics. 53-59 (1993)

Shigeru NAITO：“关于孤立奇点与稳定波场之间关系的简要报告”，第二届日韩船舶与海洋流体动力学联合研讨会论文集。