Ocean Engineering最新文献_第5页

Lateral dynamics of offshore pipe piles in layered viscoelastic soils with soil plug effect: An analytical investigation 层状粘弹性土中具有土塞效应的海上管桩横向动力学分析研究

IF 4.6 2区工程技术

Ocean Engineering Pub Date : 2025-07-01 DOI: 10.1016/j.oceaneng.2025.121971

Peng Fu , Anfeng Hu

{"title":"Lateral dynamics of offshore pipe piles in layered viscoelastic soils with soil plug effect: An analytical investigation","authors":"Peng Fu , Anfeng Hu","doi":"10.1016/j.oceaneng.2025.121971","DOIUrl":"10.1016/j.oceaneng.2025.121971","url":null,"abstract":"<div><div>The dynamic lateral response of offshore pipe piles in layered viscoelastic soils is investigated in this article, with a focus on the role played by the height of the soil plug formed within the pile. A key scenario considered is when the soil plug does not fully extend along the embedded depth of the pile, resulting in part of the pile interacting with both water and soil at the same time. The analytical approach proposed here is validated by comparing its outcomes with those from previous works. These comparisons confirm the effectiveness of the method. One of the main findings is that hydrodynamic forces must be taken into account to ensure accurate dynamic predictions. Increasing the pile’s stiffness is shown to be an effective way to reduce resonance amplitudes and shift the natural frequency to higher values. Additionally, it was observed that the properties of the uppermost soil layers significantly affect the pile response, whereas deeper layers and the soil plug itself have a comparatively minor effect. Changes in the height of soil plug are found to influence the pile impedance, underscoring the importance of incorporating this factor in more precise assessments.</div></div>","PeriodicalId":19403,"journal":{"name":"Ocean Engineering","volume":"339 ","pages":"Article 121971"},"PeriodicalIF":4.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A vertical docking system based on the autonomous underwater shuttle for seafloor communication relay 一种基于自主水下穿梭器的海底通信中继垂直对接系统

IF 4.6 2区工程技术

Ocean Engineering Pub Date : 2025-06-30 DOI: 10.1016/j.oceaneng.2025.121925

Xiaoyan Zhao, Xinyu Fei, Suohang Zhang, Ning Tan, Zhangpeng Tu, Anzhe Yi, Yurui Zhang, Canjun Yang, Yanhu Chen

{"title":"A vertical docking system based on the autonomous underwater shuttle for seafloor communication relay","authors":"Xiaoyan Zhao, Xinyu Fei, Suohang Zhang, Ning Tan, Zhangpeng Tu, Anzhe Yi, Yurui Zhang, Canjun Yang, Yanhu Chen","doi":"10.1016/j.oceaneng.2025.121925","DOIUrl":"10.1016/j.oceaneng.2025.121925","url":null,"abstract":"<div><div>The autonomous seafloor observation system enables flexible deployment for long-term marine in-situ observations, but communication with land remains a challenge. This paper presents a novel vertical docking system based on an Autonomous Underwater Shuttle (AUS), designed to efficiently shuttle between the seafloor and surface for data relay. The designs of the AUS and Vertical Docking Station (VDS) are introduced, and a mathematical model of the AUS focusing on vertical motion is established with coordinate frames to address attitude singularity. A vertical docking strategy is proposed, including a DBLT-based AUS attitude control method and a three-stage guidance method integrating acoustic and optical guidance. Two motion modes—a gliding mode for long-range transit and a precise control mode for docking—are incorporated to balance energy consumption and docking accuracy. The system's feasibility is validated through simulations and experiments. The complete seafloor communication relay process was simulated under deep-sea conditions, confirming the effectiveness of the proposed vertical docking strategy. The DBLT-based attitude control method achieved rapid and precise regulation in both pool tests and lake trials. A 100 % vertical docking success rate and preliminary verification of the underwater communication relay function were demonstrated in lake trials, proving the effectiveness of the proposed system.</div></div>","PeriodicalId":19403,"journal":{"name":"Ocean Engineering","volume":"339 ","pages":"Article 121925"},"PeriodicalIF":4.6,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring scour mechanisms of bridge group under tidal Conditions: In-situ survey, laboratory experiment, and numerical analysis 潮汐条件下桥群冲刷机理探讨：现场调查、室内试验和数值分析

IF 4.6 2区工程技术

Ocean Engineering Pub Date : 2025-06-30 DOI: 10.1016/j.oceaneng.2025.122025

Zhongxiang Liu , Songyuan Tan , Dongdong Jia , Chao Sun , Zhiyu Jiang , Tong Guo , Zhen Sun

{"title":"Exploring scour mechanisms of bridge group under tidal Conditions: In-situ survey, laboratory experiment, and numerical analysis","authors":"Zhongxiang Liu , Songyuan Tan , Dongdong Jia , Chao Sun , Zhiyu Jiang , Tong Guo , Zhen Sun","doi":"10.1016/j.oceaneng.2025.122025","DOIUrl":"10.1016/j.oceaneng.2025.122025","url":null,"abstract":"<div><div>Scouring under tidal conditions threatens closely spaced bridge groups along rivers, yet this issue remains inadequately addressed. This study investigates scour at pile foundations of bridge groups under ebb tide conditions through in-situ survey, laboratory experiments, and numerical analysis. In-situ survey was conducted at the bridge group along the Wulong River to assess tidal flow characteristics. Laboratory hydrodynamic experiment and computational fluid dynamics (CFD) simulation were performed to analyze flow behavior and scour patterns. Results reveal that closely spaced bridges induce complex hydrodynamic interactions due to the formation of turbulent wake zones. Upstream bridges decrease flow velocity near downstream bridges while intensifying turbulence, thereby exacerbating local scour around downstream foundations. The most severe scour was observed at a bridge located 220 m downstream of another bridge, positioned at the end of the upstream wake zone. Based on along-channel flow velocity and local scour effect, a scour depth prediction method for closely spaced bridge groups is proposed and validated. While the model provides a comprehensive framework for scour assessment under tidal influence, it was developed under ebb tide conditions with a specific bridge pier layout. Further calibration is recommended for application to varying tidal conditions and structural configurations.</div></div>","PeriodicalId":19403,"journal":{"name":"Ocean Engineering","volume":"338 ","pages":"Article 122025"},"PeriodicalIF":4.6,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144513664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical acceleration method for static and dynamic analysis of deepwater laying pipelines 深水敷设管道静动力分析的数值加速法

IF 4.6 2区工程技术

Ocean Engineering Pub Date : 2025-06-30 DOI: 10.1016/j.oceaneng.2025.122000

Pu Xu , Jixiang Zheng , Weiwei Lin , Yiming Hu , Naiquan Ye

{"title":"Numerical acceleration method for static and dynamic analysis of deepwater laying pipelines","authors":"Pu Xu , Jixiang Zheng , Weiwei Lin , Yiming Hu , Naiquan Ye","doi":"10.1016/j.oceaneng.2025.122000","DOIUrl":"10.1016/j.oceaneng.2025.122000","url":null,"abstract":"<div><div>The deepwater pipelay finite element model often uses relatively small time steps for numerous iterative calculations to ensure sufficient precision, resulting in significant computational time consumption. In this paper, a novel numerical acceleration method is proposed, combining the vector form intrinsic finite element (VFIFE) method with GPU parallel techniques to address this issue. Efficient GPU computational solvers for static and dynamic analyses of deepwater J-lay and S-lay pipelines are developed by utilizing CUDA-based algorithms to handle key mechanical processes, including the calculation of pipeline internal forces and moments, top excitation, pipe-stinger roller interaction, hydrodynamic forces, and pipe-seabed soil interaction, etc. The method is applied to shell element, beam element, and refined beam element models, with coding strategies optimized for GPU parallel execution. Subsequently, localized pipeline solvers and global pipelay solvers are established to showcase the method's potential to significantly reduce computational time while maintaining accuracy. This study emphasizes the advantages of combining the VFIFE method with GPU parallel techniques and contributes efficient computational solvers for the mechanical analysis of deepwater pipeline laying.</div></div>","PeriodicalId":19403,"journal":{"name":"Ocean Engineering","volume":"338 ","pages":"Article 122000"},"PeriodicalIF":4.6,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144513674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of undrained breakout capacity of shallowly buried plate anchors in cohesive soils using a tension-truncated Tresca strength criterion 用张力截断Tresca强度准则评价黏性土中浅埋板锚不排水突破能力

IF 4.6 2区工程技术

Ocean Engineering Pub Date : 2025-06-30 DOI: 10.1016/j.oceaneng.2025.122042

R. Ganesh

{"title":"Evaluation of undrained breakout capacity of shallowly buried plate anchors in cohesive soils using a tension-truncated Tresca strength criterion","authors":"R. Ganesh","doi":"10.1016/j.oceaneng.2025.122042","DOIUrl":"10.1016/j.oceaneng.2025.122042","url":null,"abstract":"<div><div>Plate anchors are widely used to provide economical mooring systems for many offshore infrastructures. Previous studies examining the undrained breakout capacity of plate anchors in purely cohesive soils were predominantly based on the classical Tresca (CT) strength criterion, which assumes equal uniaxial yield strengths in compression and tension. However, the observed uniaxial tensile strength of cohesive soils is often much lower than its compression counterpart, emphasizing the need to consider realistic tensile strength in practical engineering applications. This research investigates the potential impact of a tensile strength cutoff on the ultimate undrained breakout capacity of shallowly buried horizontal plate anchors in purely cohesive soils, utilizing a tension-truncated Tresca (TT) strength criterion. The analysis employs the discrete sum method based on horizontal slices within the upper bound plasticity theory to calculate the undrained breakout capacity of plate anchors under varying shapes, including circular, square, rectangular, and strip. A comparison of results obtained using both CT and TT strength criteria reveals a significant effect of the tension cutoff on the ultimate undrained breakout capacity of plate anchors in cohesive soils. Additionally, the study explores the influence of different anchor-soil interface conditions and the associated breakout failure surfaces under typical parameter combinations. Remarkably, the results of this study align well with the available numerical and experimental results in the existing literature.</div></div>","PeriodicalId":19403,"journal":{"name":"Ocean Engineering","volume":"338 ","pages":"Article 122042"},"PeriodicalIF":4.6,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144519112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Boundary adaptive and dynamic neural network dual layer path planning algorithm for polar multi-mission area under-ice feature scanning 极地多任务区冰下特征扫描边界自适应动态神经网络双层路径规划算法

IF 4.6 2区工程技术

Ocean Engineering Pub Date : 2025-06-30 DOI: 10.1016/j.oceaneng.2025.121936

Lin Zhou , Zhongchao Deng , Nan Zhou , Guiqiang Bai , Hongde Qin , Zhongben Zhu

{"title":"Boundary adaptive and dynamic neural network dual layer path planning algorithm for polar multi-mission area under-ice feature scanning","authors":"Lin Zhou , Zhongchao Deng , Nan Zhou , Guiqiang Bai , Hongde Qin , Zhongben Zhu","doi":"10.1016/j.oceaneng.2025.121936","DOIUrl":"10.1016/j.oceaneng.2025.121936","url":null,"abstract":"<div><div>Autonomous Underwater Vehicles play a crucial role in polar under-ice feature scanning, contributing to explore ecological changes in polar regions. However, multi-mission under-ice feature scanning face significant challenges due to complex boundaries, energy constraints, and environmental uncertainties. To address these issues, this paper proposes a Boundary Adaptive and Dynamic Neural Network Dual Layer path planning algorithm, which consists of coverage path planning and connectivity path planning. First, Boundary Adaptive Coverage based on Dynamic Grid algorithm is introduced, which optimizes coverage paths by adaptively inserting boundary waypoints to improve coverage efficiency of AUV. Second, Dynamic Neural Network based on Ocean Current Energy Consumption algorithm is proposed, which integrates ocean current effects to save energy and real time replan connection paths. Simulation results demonstrate that it outperforms current methods in terms of total path length, turning times, and energy consumption, and its practicality is verified by “Xing Hai 1000” AUV field experiments.</div></div>","PeriodicalId":19403,"journal":{"name":"Ocean Engineering","volume":"338 ","pages":"Article 121936"},"PeriodicalIF":4.6,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144513667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Active flow control actuators on wind turbines; comprehensive review 风力涡轮机的主动流量控制执行器；全面审查

IF 4.6 2区工程技术

Ocean Engineering Pub Date : 2025-06-30 DOI: 10.1016/j.oceaneng.2025.121991

Mohammad Saemian, Josep M. Bergadà

{"title":"Active flow control actuators on wind turbines; comprehensive review","authors":"Mohammad Saemian, Josep M. Bergadà","doi":"10.1016/j.oceaneng.2025.121991","DOIUrl":"10.1016/j.oceaneng.2025.121991","url":null,"abstract":"<div><div>Active flow control (AFC) techniques are designed to add or subtract momentum into/from the flow field in order to modify (usually delay) the boundary layer separation. AFC strategies are being considered in many industrial applications, particularly in aeronautics/aerodynamics, where the early separation of the boundary layer drastically affects the forces acting on an airfoil. AFC devices are divided into three different types, including fluidic actuators, plasma ones, and moving surfaces. The present paper is a comprehensive review of the different AFC actuators employed in wind turbines, including Dielectric Barrier Discharge (DBD) plasma actuator (PA), synthetic jet actuator (SJA), and suction and blowing actuators. All AFC applications on Horizontal axis wind turbines (HAWT) and Vertical ones (VAWT), whether reporting numerical or experimental methods, are considered. The actuation when employing moving surfaces shall be presented in a different review. AFC implementation on wind turbines needs to employ a strategy consisting of setting/optimizing the AFC parameters, as well as considering an energy assessment. This review is highlighting the research that has already addressed these points. Eventually, a comparison of the main achievements gathered from previous publications is presented and discussed in detail to assist researchers and engineers and give them a tool to design future AFC applications on WTs.</div></div>","PeriodicalId":19403,"journal":{"name":"Ocean Engineering","volume":"339 ","pages":"Article 121991"},"PeriodicalIF":4.6,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Local buckling and compressive strain capacity of metallurgically clad pipes with dent defects at girth welds 环焊缝有凹痕缺陷的冶金包层管的局部屈曲和压缩应变能力

IF 4.6 2区工程技术

Ocean Engineering Pub Date : 2025-06-30 DOI: 10.1016/j.oceaneng.2025.121897

Renjie Yang , Yu Zhang , Yangye He , Menglan Duan , Shuang Wang

{"title":"Local buckling and compressive strain capacity of metallurgically clad pipes with dent defects at girth welds","authors":"Renjie Yang , Yu Zhang , Yangye He , Menglan Duan , Shuang Wang","doi":"10.1016/j.oceaneng.2025.121897","DOIUrl":"10.1016/j.oceaneng.2025.121897","url":null,"abstract":"<div><div>Metallurgically clad pipes (MCPs) have effectively addressed corrosion issues associated with deep-sea oil and gas transportation. However, MCPs frequently suffer dent damage resulting from third-party impacts during the installation and operational conditions. Such dent defects may precipitate local buckling failures under combined loading scenarios involving bending moments, axial forces, and internal pressure. In this study, a three-dimensional finite element model incorporating girth welds is developed to investigate the local buckling failure mechanism of MCPs induced by dents located in weld regions under combined loading conditions. Traditional strain-based assessment approaches are inherently limited and thus inadequate for evaluating MCPs with dent-induced damage in the girth weld area. To overcome this limitation, a novel calculation method utilizing the far-field average strain approach is proposed to predict local buckling failure accurately. Comprehensive analyses examine the influence of critical parameters, namely including bending moment, internal pressure, external pressure, dent depth, and the spatial proximity between dents and girth welds, on the MCP's buckling behavior and compressive strain capacity. The proposed method is validated through comparisons with established critical buckling failure loads. Results indicate that dents near girth weld regions significantly compromise the limited compressive strain capacity of MCPs, with dent depth, internal pressure, and external pressure notably influencing the local buckling failure modes. A predictive formula quantifies the limited compressive strain capacity, incorporating the effects of external pressure, internal pressure, dent depth, and dent-to-weld distance. The prediction errors are all within 10 %, satisfying the requirements of practical engineering applications. The proposed method provides a valuable reference for the integrity assessment of metallurgically clad pipes.</div></div>","PeriodicalId":19403,"journal":{"name":"Ocean Engineering","volume":"338 ","pages":"Article 121897"},"PeriodicalIF":4.6,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144513670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adaptive fixed-time disturbance observer-based anti-saturation distributed sliding mode formation tracking control for multi-underactuated AUVs under lumped disturbances 集总扰动下多欠驱动auv的自适应定时扰动观测器抗饱和分布滑模编队跟踪控制

IF 4.6 2区工程技术

Ocean Engineering Pub Date : 2025-06-30 DOI: 10.1016/j.oceaneng.2025.122026

Kaihang Zhang, Wei Zhang, Qiyang Wu, Xue Du

{"title":"Adaptive fixed-time disturbance observer-based anti-saturation distributed sliding mode formation tracking control for multi-underactuated AUVs under lumped disturbances","authors":"Kaihang Zhang, Wei Zhang, Qiyang Wu, Xue Du","doi":"10.1016/j.oceaneng.2025.122026","DOIUrl":"10.1016/j.oceaneng.2025.122026","url":null,"abstract":"<div><div>During trajectory tracking missions, formations of multi-underactuated autonomous underwater vehicles (AUVs) encounter substantial challenges from lumped disturbances—including unknown environmental effects and model parameter uncertainties—as well as actuator input saturation. To address these issues, this paper proposes a distributed anti-saturation integral sliding mode formation control strategy. The proposed framework incorporates an adaptive fixed-time disturbance observer (AFDO) that employs adaptive parameters to compensate for lumped disturbances, ensuring system stability and reliable performance. To prevent actuator saturation, a novel fixed-time dynamic auxiliary system is introduced to limit actuator inputs within permissible bounds. Additionally, a distributed anti-saturation sliding mode controller using a fixed-time integral sliding mode surface is designed to achieve rapid and stable formation control independent of the initial system state. This approach mitigates saturation effects and ensures a prompt system response. Numerical simulations confirm the effectiveness and reliability of the proposed control strategy.</div></div>","PeriodicalId":19403,"journal":{"name":"Ocean Engineering","volume":"339 ","pages":"Article 122026"},"PeriodicalIF":4.6,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vortex-induced vibrations of variable cross-section CWPs under axially varying tension: Numerical investigation with three flow profiles 轴向变张力下变截面水轮机涡激振动：三种流型的数值研究

IF 4.6 2区工程技术

Ocean Engineering Pub Date : 2025-06-30 DOI: 10.1016/j.oceaneng.2025.121933

Jian Tan , Yu Zhang , Yulong Zhang , Le Sun , Shuai Cui , Chen An , Segen F. Estefen

{"title":"Vortex-induced vibrations of variable cross-section CWPs under axially varying tension: Numerical investigation with three flow profiles","authors":"Jian Tan , Yu Zhang , Yulong Zhang , Le Sun , Shuai Cui , Chen An , Segen F. Estefen","doi":"10.1016/j.oceaneng.2025.121933","DOIUrl":"10.1016/j.oceaneng.2025.121933","url":null,"abstract":"<div><div>Vortex-induced vibration (VIV) poses significant challenges to the structural reliability of Cold-water pipes (CWPs) in Ocean Thermal Energy Conversion (OTEC) systems, particularly when geometric variation and non-uniform axial tension are present. This study develops a high-fidelity semi-analytical framework that combines the Generalized Integral Transform Technique (GITT) with Sturm-Liouville Eigenvalues Using Theta matrices (SLEUTH) method. To analyze the VIV of CWPs with variable cross-sections under three realistic flow profiles: uniform, linear shear, and exponential shear. Validation against finite element simulations and existing literatures confirms the accuracy of the proposed model. Results demonstrate that while uniform flow produces stable standing-wave responses, linear and exponential shear flows introduce progressive mode transitions, nonlinear mode coupling, and broadened excitation spectra. Notably, exponential shear induces spatially asynchronous vortex shedding and chaotic lock-in behavior, revealing energy transfer from dominant to higher-order modes. These phenomena are strongly influenced by the interplay between velocity gradients and structural heterogeneity. The findings provide critical insights into the physical mechanisms governing VIV and offer design guidance for mitigating fatigue-critical responses in CWPs. This work addresses gaps in the current literature by accounting for coupled geometric-tension-flow effects and proposes a robust computational tool for future engineering optimization of marine energy systems.</div></div>","PeriodicalId":19403,"journal":{"name":"Ocean Engineering","volume":"338 ","pages":"Article 121933"},"PeriodicalIF":4.6,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144513665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0