Influence of wave directional spreading of short-crested irregular waves on ship motions and wave loads

IF 4 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures Pub Date : 2025-04-08 DOI:10.1016/j.marstruc.2025.103825

Zhenwei Chen , Jialong Jiao , Yuanming Chen , Caixia Jiang , Shuai Chen

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引用次数: 0

Abstract

The conventional ship seakeeping analysis are conducted under the assumption of uni-directional regular or irregular waves. However, full-scale real ships operate in sea states of three-dimensional multi-directional irregular waves. This paper simulates ship motions and load responses in short-crested irregular waves with various directional functions by using CFD-FEM method. First, the simulated waves with various directional functions are comparatively analyzed and validated. Then, ship motions and loads in different short-crested wave states and also in long-crested waves are comprehensively analyzed and compared from the aspect of time series, frequency spectra, statistical values and exceedance of probability. The effect of directional function of short-crested waves on ship motions and loads is comprehensively discussed, which provides useful regression formula for the rapid extrapolation and estimation of ship motions and loads in short-crested waves using the long-crested wave response results. This paper sheds light on the effect of wave directional spreading on ship motions and load responses.

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短冠不规则波的波向扩散对船舶运动和波浪载荷的影响

传统的船舶耐波性分析是在单向规则波和不规则波的假设下进行的。然而，全尺寸的真船在三维多向不规则波浪的海况下运行。本文采用CFD-FEM方法模拟了船舶在具有不同方向函数的短峰不规则波浪中的运动和载荷响应。首先，对不同方向函数的模拟波进行了对比分析和验证。然后，从时间序列、频谱、统计值和超越概率等方面对不同短峰波状态和长峰波状态下的船舶运动和载荷进行了综合分析和比较。全面讨论了短波峰方向函数对船舶运动和载荷的影响，为利用长波峰响应结果快速外推和估计短波峰中船舶运动和载荷提供了有用的回归公式。本文研究了波浪方向传播对船舶运动和载荷响应的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Marine Structures 工程技术-工程：海洋

CiteScore

8.70

自引率

7.70%

发文量

157

审稿时长

6.4 months

期刊介绍： This journal aims to provide a medium for presentation and discussion of the latest developments in research, design, fabrication and in-service experience relating to marine structures, i.e., all structures of steel, concrete, light alloy or composite construction having an interface with the sea, including ships, fixed and mobile offshore platforms, submarine and submersibles, pipelines, subsea systems for shallow and deep ocean operations and coastal structures such as piers.