DEVELOPMENT OF A MEASURERING AND ANALYZING SYSTEM FOR LARGE AMPLITUDE SHIP MOTION IN IRREGULAR DIRECTIONAL WAVES.

船舶大振幅不规则定向波运动测量分析系统的研制。

• 批准号: 03555098
• 负责人: HIRAYAMA Tsugukiyo
• 金额: $ 3.65万
• 依托单位: YOKOHAMA NATIONAL UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03555098/
• 关键词: SHORT CREATED WAVES; LARGE AMPLITUDE MOTION; REMOTE MEASURING; SHIP MOTION; IRREGULAR WAVES

It is very important to measuring the ship motions in experimental wave tank for not only to the evaluation of theory but also to catch those phenomena that can not be estimated by the theory. on the other hands. according to the progress of wave generating techniques. more realistic wave fields became possible to be generated in such a long tank but the measuring system for ship's large motions including the large plane motion are not established yet.So, we aimed to develop a measuring and analyzing method for ship motion in irregular directional waves by using optical device.At the first year, we developed an optical remote measuring system and this last yearl, we developed calculation code for estimating the six degrees freedom motion from the obtained digital data.In the final we tested our system by conducting model experiments in still water and in irregular directional waves. As model we selected free running full ship and long and semisubmersible offshore structure.As wave we used regular, long crested irregular waves, and directional spectrum waves.As for results, our system was confirmed to be a reliable for our original purpose.

在实验波浪水池中对船舶运动进行测量，不仅对理论评估有重要意义，而且对于捕捉理论无法估计的现象也具有重要意义。在另一只手。根据造波技术的进展。鉴于此，我们致力于开发一种利用光学器件对船舶在不规则方向波中的运动进行测量和分析的方法。第一年，我们开发了一套光学遥测系统，并在去年开发了一套由所获得的数字数据估算六自由度运动的计算程序。最后，我们通过静水和不规则方向波中的模型试验对系统进行了测试。模型选用自由全船和长半潜式近海结构物，波浪采用规则波、长峰不规则波和方向谱波，计算结果表明，该系统性能可靠，达到了预期目的。

项目成果

竹沢 誠二,平山 次清 金 世殷,スザノ・アルベルト: "方向スペクトル波中の船速低下に関する自航模型実験" 日本造船学会論文集. 172. 47-56 (1992)

Seiji Takezawa、Tsugukiyo Hirayama、Sein Kim、Alberto Suzano：“有关定向频谱波中船舶速度降低的自推进模型实验”日本造船学会汇刊 172. 47-56 (1992)。

竹沢 誠二,平山 次清,金 世殷,スザノ・アルベルト: "方向スペクトル波中の船速低下に関する自航模型試験" 日本造船学会論文集. 172. 47-56 (1992)

Seiji Takezawa、Tsugukiyo Hirayama、Sein Kim、Alberto Suzano：“有关定向频谱波中船舶速度降低的自推进模型测试”日本造船学会汇刊 172. 47-56 (1992)。

Seiji,Takezawa and Tsugukiyo, Hirayama et al.: "Free running model experiment on speed loss in directional spectrum waves" Journal of The Society of Naval Architects of Japan. Vol.172. 47-56 (1992)

Seiji、Takezawa 和 Tsugukiyo、Hirayama 等人：“方向谱波速度损失的自由运行模型实验”日本造船学会杂志。