Study on Estimatiing Method for Sea-keeping Qualities of High-speed Vessel

高速船舶耐波性评价方法研究

• 批准号: 04402037
• 负责人: TAKAKI Mikio
• 金额: $ 12.42万
• 依托单位: HIROSHIMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (A)
• 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/grant/KAKENHI-PROJECT-04402037/
• 关键词: High-speed vessel; Seakeeping qualities; Two and half dimensional theory; Green function method; Pankine panel method; Strip method; Practical calculation method; 非線形ストリップ法; 三次元特異点分布法; ランキンソース法; 時間領域; 線積分; 自由表面条件; 二重模型流れ; 波動場; Kochin関数; 3次

We have studied on estimating method for sea-keeping qualities for high-speed vessel in waves since 1992. The main conclusions obtained in this study are summarized as follows :(1) Strip theory is valid for the ship speed of less than Fn=0.4, and the estimating accuracy worsens at the ship speed of more than Fn=0.4.(2) The end term effect in strip theory can not be neglected for a high-speed vessel with a transomstern.(3) The 2 and half dimensional theory, which is called the high-speed slenderbody theory (HSST), is the most useful method for estimation of seakeeping qualities of high-speed vessel from both a practical standpoint and a standpoint of estimating accuracy.(4) The three-dimensional Green function method has some numerical problems such as the treatment of line integral, a free surface condiotion, the number of discretized panels and CPU time which should be improved in the near future.(5) The rankine source method is to be the most promising theory, because it has merits which we can change a free surface condition etc. However, the treatment of steady disturbance around the transom stern of a high-speed vessel should be improved

我们自1992年起就对高速船在波浪中的适航性评估方法进行了研究，主要结论如下：(1)条带理论对于船速小于Fn=0.4的情况是有效的。 ，当船速超过Fn=0.4时，估计精度变差。(2)对于有艉艉的高速船舶，不能忽略条带理论中的端项效应。(3) 2半维理论，即高速细长体理论（HSST），无论从实用角度还是从估计精度角度来看，都是高速船舶耐波性估计最有用的方法。（4）这三种理论维格林函数法存在一些数值问题，如线积分的处理、自由曲面条件、离散面板的数量和CPU时间等，应在不久的将来得到改进。(5)兰金源法是最有前途的理论上，它具有可以改变自由液面条件等优点。但是，高速船艉尾周围的稳态扰动的处理还有待改进

项目成果

Hidetsugu Iwashita: "Wave Forces Acting on a Blunt Ship with Forward Speed in Oblique Sea (3nd Report)." J.Soc.Nav.Arch.Japan. No.176. 83-98 (1994)

Hidetsugu Iwashita：“波浪力作用在斜海中前进的钝船上（第三次报告）。”

岩下英嗣: "斜波中を航走する肥大船に働く波力について(第2報)" 日本造船学会論文集. 173. 195-208 (1993)

Hidetsugu Iwashita：“关于作用在倾斜波浪中的大型船舶上的波浪力（第二次报告）”日本造船学会汇刊 173. 195-208 (1993)。

岩下英嗣: "斜波中を航走する肥大船に働く波力について(第3報)" 日本造船学会論文集,第176号. 176. 83-98 (1994)

岩下英次：“关于作用在倾斜波浪中的大型船舶上的波浪力（第 3 次报告）” 日本造船学会汇刊，第 176. 176. 83-98（1994 年）

Hidetsugu Iwashita: "Wave Forces Acting on a Blunt Ship with Forward Speed in Oblique Sea." J.Soc.Nav.Arch.Japan. No.171. 109-123 (1992)

Hidetsugu Iwashita：“波浪力作用在斜海中前进的钝船上。”

M.Takagi: "A Strip Theory in the Large Ship Motions" Proc.of 9th Int.Workshop on Water Waves and Floating Bodies. 205-209 (1994)

M.Takagi：“大型船舶运动中的带状理论”第 9 届水波和浮体国际研讨会论文集。