Hydrodynamic characteristics of dual-layered thin-walled concentric segmented structures

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL Thin-Walled Structures Pub Date : 2025-03-02 DOI:10.1016/j.tws.2025.113089

Zhiqun Guo , Jianming Miao , Zhenfeng Zhai

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引用次数: 0

Abstract

Segmented arc structures are commonly used in marine engineering but are often vulnerable to wave penetration through their gaps. This study examines the feasibility of adding a low-cost, small breakwater behind a segmented structure to mitigate this issue effectively. An analytical model based on linear potential theory is developed to understand water wave interactions with a cylindrical and segmented arc-shaped dual-layered thin-walled structure. Using eigenfunction matching and separation of variables, the unknown function is expanded within a Chebyshev polynomial framework. With comprehensive boundary condition considerations, the integral equation is transformed into a series of algebraic equations, which are solved to determine the unknown function. Model accuracy is verified by simplifying the model and comparing it with published results. The hydrodynamic response, including wave forces and free surface elevation, is analyzed. Numerical results indicate that a small porous breakwater effectively reduces wave load on the inner cylinder and smooths wave heights within the structure and at the openings, facilitating safe ship passage and operation. This study provides practical guidance and valuable reference for engineering applications.

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来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.