Short-crested wave-current forces around a concentric multiple-cylinder structure

IF 1.9 3区工程技术 Q3 ENGINEERING, CIVIL

Coastal Engineering Journal Pub Date : 2023-03-10 DOI:10.1080/21664250.2023.2187740

Zhenfeng Zhai, Jie Li, Dan Liu, Jianming Miao

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引用次数: 1

Abstract

ABSTRACT The potential flow theory is used to develop a new analytical method to solve the diffraction problem of short-crested incident waves with uniform current acting on a concentric multiple-cylinder system. The influence of uniform current on the hydrodynamic performance of the concentric structure is discussed. The incident angle and speed of the currents have a significant influence on the short-crested wave force and run-up on the concentric structure, i.e. the wave force and wave run-up increase significantly when wave and uniform current directions are the same, while decreasing when in the opposite direction of the wave and uniform current. Additionally, the effects of parameters such as the current incidence angle, current speed, porous-effect parameters, number of perforated walls, and short-crestedness of regular waves on the hydrodynamic performance of the concentric structures are valuated by numerical experiments. It is observed that as the number of permeable walls increases, wave load on the impermeable internal cylinder gradually decreases and the wave surface around is more even. This study is expected to provide theoretical guidance for the design of nearshore architecture.

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同心多圆柱结构周围的短峰波流力

摘要利用势流理论，提出了一种新的解析方法，求解均匀电流作用于同心多圆柱系统的短波峰入射波的衍射问题。讨论了均匀流对同心结构水动力性能的影响。电流的入射角和速度对同心结构上的短波峰波浪力和爬高有显著影响，即当波浪和均匀电流方向相同时，波浪力和波浪爬高显著增加，而当波浪和一致电流方向相反时，波浪作用力和波浪爬低显著减少。此外，还通过数值实验评估了电流入射角、电流速度、多孔效应参数、穿孔壁数和规则波短波峰等参数对同心结构水动力性能的影响。观察到，随着透水墙数量的增加，不透水内筒上的波浪荷载逐渐减小，周围的波面更加均匀。本研究有望为近海建筑设计提供理论指导。

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 Journal 工程技术-工程：大洋

CiteScore

4.60

自引率

8.30%

发文量

审稿时长

7.5 months

期刊介绍： Coastal Engineering Journal is a peer-reviewed medium for the publication of research achievements and engineering practices in the fields of coastal, harbor and offshore engineering. The CEJ editors welcome original papers and comprehensive reviews on waves and currents, sediment motion and morphodynamics, as well as on structures and facilities. Reports on conceptual developments and predictive methods of environmental processes are also published. Topics also include hard and soft technologies related to coastal zone development, shore protection, and prevention or mitigation of coastal disasters. The journal is intended to cover not only fundamental studies on analytical models, numerical computation and laboratory experiments, but also results of field measurements and case studies of real projects.