An enhanced model for an extreme wave impacting a vertical cylinder

IF 4.2 2区工程技术 Q1 ENGINEERING, CIVIL

Coastal Engineering Pub Date : 2024-10-11 DOI:10.1016/j.coastaleng.2024.104630

Bing Tai , Yuxiang Ma , Guohai Dong , Chan Ghee Koh , Tianning Tang , Marc Perlin

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引用次数: 0

Abstract

The interaction between extreme waves and a vertical cylinder is a complex process due to the intricate impact physics, three-dimensional effects, and unique characteristics of breaking waves. To improve wave force predictions, an enhanced model based on a finite-water-extent slamming theory that incorporates wave profiles is proposed. In contrast to the infinite-water-extent assumption in typical wave slamming theories, a finite volume of water with dual free surfaces is used, which better captures the wave's boundary conditions. Strip theory and potential flow theory are adopted to calculate sectional wave forces on the cylinder by solving the governing and boundary equations. The wave profiles, which provide the boundary conditions, result in a more realistic distribution of sectional forces than the often-assumed uniform distribution. Comparison with experimental data shows that the proposed model indeed provides more accurate wave force predictions and exhibits a gradual rise in impact force instead of an abrupt change observed in commonly used models.

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冲击垂直圆柱体的极端波浪增强模型

由于错综复杂的冲击物理、三维效应和破浪的独特特征，极端波浪与垂直圆柱体之间的相互作用是一个复杂的过程。为了改进波力预测，我们提出了一个基于有限水程撞击理论的增强模型，其中包含波浪剖面。与典型坍波理论中的无限水程假设不同，该模型使用了具有双自由表面的有限水体，从而更好地捕捉了波浪的边界条件。采用带状理论和势流理论，通过求解控制方程和边界方程来计算圆柱体上的截面波力。波浪剖面提供了边界条件，使截面力的分布比通常假定的均匀分布更符合实际情况。与实验数据的比较表明，所提出的模型确实能提供更准确的波力预测，而且冲击力呈逐渐上升趋势，而不是常用模型中观察到的突然变化。

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

Coastal Engineering 工程技术-工程：大洋

CiteScore

9.20

自引率

13.60%

发文量

审稿时长

3.5 months

期刊介绍： Coastal Engineering is an international medium for coastal engineers and scientists. Combining practical applications with modern technological and scientific approaches, such as mathematical and numerical modelling, laboratory and field observations and experiments, it publishes fundamental studies as well as case studies on the following aspects of coastal, harbour and offshore engineering: waves, currents and sediment transport; coastal, estuarine and offshore morphology; technical and functional design of coastal and harbour structures; morphological and environmental impact of coastal, harbour and offshore structures.