摘要
传统的耐波性及波浪载荷理论与试验主要针对船舶在二维长峰波中的运动与载荷响应进行预报,然而实际海浪是三维短峰波。研究表明,基于长峰波的理论计算及水池模型试验所预报的船舶运动与载荷响应与实际情况存在一定的差异,且三维波浪的方向扩散特性是影响船舶运动与载荷响应的重要因素之一。为了研究短峰波中船舶运动与载荷响应特性及其与长峰波中响应的差异性,本文首先基于三维水弹性理论计算船舶在规则波中的频域响应,然后基于二维谱分析法将其扩展至短峰不规则波中船舶运动与载荷响应预报,进而分析短峰波方向扩散函数对于船舶运动与载荷响应的影响,最后基于实际海浪环境下大尺度模型水弹性试验数据验证理论计算结果。
Ship motion and load responses are usually predicted on the assumption that the incident waves are long-crested ones.The realistic sea waves are however short-crested.Real practice reveals that the ship motion and load responses induced by short-crested waves are different from those induced by long-crested waves and that the wave directional function has a significant influence on ship motion and load responses.In this paper,the frequency domain responses of a ship in regular waves are calculated by 3D linear hydroelas ticity theory.The ship motion and load responses in short-crested waves are then predicted by 2D spectral analysis method.The influences of directional function on ship motion and load responses are also analyzed.Finally,large-scale model measurement data are used to validate the numerical results.
作者
焦甲龙
陈超核
任慧龙
JIAO Jia-long;CHEN Chao-he;REN Hui-long(School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510641,China;College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China)
出处
《船舶力学》
EI
CSCD
北大核心
2020年第4期427-438,共12页
Journal of Ship Mechanics
基金
国家自然科学基金资助项目(51909096,51979111)
广东省自然科学基金资助项目(2018A030310378)。
关键词
短峰波
实际海浪
方向函数
耐波性
波浪载荷
水弹性
short-crested waves
realistic sea wave
directional function
seakeeping
wave loads
hydroelasticity
