Development of Ship-borne Type Directional Wave Recorder

船载式定向波记录仪的研制

• 批准号: 05555270
• 负责人: HIRAYAMA Tsugukiyo
• 金额: $ 8.58万
• 依托单位: YOKOHAMA NATIONAL UNIVERSITY,Faculty of Engineering
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05555270/
• 关键词: DIRECTIONAL SPECTRUM WAVE; WAVE RECORDER; SHIP BORNE TYPE; SHIP MOTION

Wave data including wind wave and swll is very important for the design or operation of ships or ocean structures in deep sea. Until now those data were obtained through the obsevations by manual on deck. Manual method is not so accurate and difficult in the dark at nights.So automatical measurement was strongly desired.This reseach was devoted to the development of the estimation of encountered directional wave spectrum from responses of a running ship. Not only motions but also relative wave heights were measured and directional spectrum wave was estimated by the method of so called MLM.At the same time one to three correspondence problem between encountered frequency and wave length were resolved by applying MLM . These methods were confirmed by model experiments in a towing tank and by full-scale measurements.Finally the base of an automatically estimating method was established.

包括风浪和SWLL在内的波数据对于深海的船舶或海洋结构的设计或操作非常重要。到目前为止，这些数据是通过手册在甲板上通过解雇获得的。在夜间黑暗中，手动方法并不是那么准确和困难。强烈需要自动测量。该研究专门用于从运行船的响应中开发遇到的方向波谱的估计。不仅可以测量运动和相对波高，并通过所谓的MLM的方法估算了方向光谱波，同时通过应用MLM来解决遇到的频率和波长之间的一到三个对应问题。通过模型实验在牵引罐中和全尺度测量中证实了这些方法。在本自动估计方法的基础上，已确认。