Ocean Engineering最新文献_第7页

BAP and Time-variant QCSP Modeling and Optimization BAP与时变QCSP建模与优化

IF 5.5 2区工程技术

Ocean Engineering Pub Date : 2026-04-30 Epub Date: 2026-02-21 DOI: 10.1016/j.oceaneng.2026.124721

Cheng Cheng , Zengshuang Li , Yong Zhang

{"title":"BAP and Time-variant QCSP Modeling and Optimization","authors":"Cheng Cheng , Zengshuang Li , Yong Zhang","doi":"10.1016/j.oceaneng.2026.124721","DOIUrl":"10.1016/j.oceaneng.2026.124721","url":null,"abstract":"<div><div>Enhanced data sharing between shipping companies and ports fosters seamless cooperation and more efficient use of terminal resources. This study addresses the integrated Berth Allocation Problem (BAP) and Time-variant Quay Crane Scheduling Problem (QCSP) in container terminals, aiming to optimize vessel berthing order, timing, and dynamic quay crane assignments. A Mixed Integer Linear Programming (MILP) model is introduced alongside a novel solution framework that combines Adaptive Large Neighborhood Search (ALNS) with Reinforcement Learning (RL). The integrated ALNS-RL framework sequentially updates ship sequences and quay crane schedules, enabling efficient convergence to high-quality solutions within limited iterations. Numerical experiments demonstrate that: 1) The proposed method yields superior solutions, reducing port stay time by 7.61% and quay crane idle rate by 13.48%; 2) The ratio of terminal berths to quay cranes significantly impacts operational efficiency, with an optimal allocation ratio identified; 3) The approach effectively handles instances from small to large scale, including problems with 30 berths and 90 vessels. Furthermore, the ALNS-RL framework outperforms both standard ALNS and a Hybrid Genetic Algorithm (HGA), achieving a minimal average deviation of 0.5% from the best solution—significantly better than ALNS (2.64%) and HGA (4.07%). While computationally efficient for small problems, the method demonstrates particular strength in large-scale instances, establishing its robustness for complex, real-world terminal scheduling applications.</div></div>","PeriodicalId":19403,"journal":{"name":"Ocean Engineering","volume":"353 ","pages":"Article 124721"},"PeriodicalIF":5.5,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147386352","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

Explainable dual-point near-bit diagnostics for deepwater drilling anomalies: A deployable two-stage MI-AHP framework 可解释的深水钻井异常双点近钻头诊断：可部署的两级MI-AHP框架

IF 5.5 2区工程技术

Ocean Engineering Pub Date : 2026-04-30 Epub Date: 2026-02-20 DOI: 10.1016/j.oceaneng.2026.124710

Jiahao Zhan , Jun Li , Gonghui Liu , Hongwei Yang , Chao Wang , Biao Wang , Zhenyu Long

{"title":"Explainable dual-point near-bit diagnostics for deepwater drilling anomalies: A deployable two-stage MI-AHP framework","authors":"Jiahao Zhan , Jun Li , Gonghui Liu , Hongwei Yang , Chao Wang , Biao Wang , Zhenyu Long","doi":"10.1016/j.oceaneng.2026.124710","DOIUrl":"10.1016/j.oceaneng.2026.124710","url":null,"abstract":"<div><div>As deepwater drilling advances into increasingly narrow pressure margins, the available response time to well-control anomalies diminishes to just a few minutes. Conventional surface-only monitoring techniques often experience signal delays and attenuation along the drillstring, which hampers the early detection of disturbances near the drill bit. This study introduces a dual-point near-bit diagnostic framework designed to provide early anomaly warnings. Specifically, two downhole measurement locations are utilized to capture both synchronous responses and the transmission characteristics between points. A data-driven multi-indicator analytic hierarchy process (MI-AHP) is applied to derive interpretable feature weights by integrating multiple importance metrics obtained from an offline random forest model, facilitating efficient linear scoring. To address class imbalance, a two-stage cascade model is implemented: the first stage discriminates anomalies from seven normal conditions, while the second stage classifies four distinct anomaly types (kick, lost circulation, washout, and bit sticking). The proposed system was validated on data from fifteen deepwater wells, encompassing 1586.3 h and 22 anomaly events, achieving a Macro-F1 score of 93.4% for normal condition recognition, 91.2% for anomaly detection, and 89.8% for anomaly classification. Deployment on an ARM Cortex-M4 embedded platform requires only 78 ms and 125 KB of memory, supporting real-time downhole operation. In independent well testing, the system attained a Macro-F1 score of 90.5% with a false positive rate below 0.6%, successfully detecting a kick event 36 min prior to conventional surface-based identification methods.</div></div>","PeriodicalId":19403,"journal":{"name":"Ocean Engineering","volume":"353 ","pages":"Article 124710"},"PeriodicalIF":5.5,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147386357","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

Dynamic coupling mechanism and parametric study of mooring chain–seabed interaction based on a global-to-local nested modeling approach 基于全局到局部嵌套建模方法的系泊链-海床相互作用动力学耦合机理及参数化研究

IF 5.5 2区工程技术

Ocean Engineering Pub Date : 2026-04-30 Epub Date: 2026-02-20 DOI: 10.1016/j.oceaneng.2026.124701

Xiang Li , Qilin Yin , Kejiang Li , Zhiming Yuan , Yijun Zhou

{"title":"Dynamic coupling mechanism and parametric study of mooring chain–seabed interaction based on a global-to-local nested modeling approach","authors":"Xiang Li , Qilin Yin , Kejiang Li , Zhiming Yuan , Yijun Zhou","doi":"10.1016/j.oceaneng.2026.124701","DOIUrl":"10.1016/j.oceaneng.2026.124701","url":null,"abstract":"<div><div>In deepwater mooring systems, the dynamic interaction between anchor chains and the seabed is critical for controlling chain displacement and mooring anchor capacity, yet its complexity poses significant challenges for accurate simulation. This paper proposes a ‘global-to-local’ nested modeling framework to analyze chain-soil interaction under realistic ocean loads. First, a coupled model of floater-mooring-seabed is established, incorporating the influence of seabed soil properties on the mooring system. Then, using the time-varying loads at the truncation points of the coupled model as boundary conditions, a refined chain-soil model is developed using the coupled Eulerian-Lagrangian (CEL) method, defining the soil deformation patterns and chain configuration, displacement, and tension evolution of the chain during dynamic mooring. Consistency in load-displacement responses between models validates the feasibility of the nested modeling approach. Parametric studies show that the strain rate effect significantly enhances soil resistance and governs soil deformation patterns, while changes in soil ductility and sensitivity also considerably affect the trenching development and system response. This study provides a reliable numerical tool and theoretical basis for the accurate assessment of dynamic responses and safe design of deepwater mooring systems.</div></div>","PeriodicalId":19403,"journal":{"name":"Ocean Engineering","volume":"353 ","pages":"Article 124701"},"PeriodicalIF":5.5,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147386358","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

Investigations on alleviation effect of Bragg breakwater on harbor resonance induced by irregular waves Bragg防波堤对不规则波浪引起的港口共振的缓解效果研究

IF 5.5 2区工程技术

Ocean Engineering Pub Date : 2026-04-30 Epub Date: 2026-02-23 DOI: 10.1016/j.oceaneng.2026.124797

Linhui Hou, Junliang Gao

{"title":"Investigations on alleviation effect of Bragg breakwater on harbor resonance induced by irregular waves","authors":"Linhui Hou, Junliang Gao","doi":"10.1016/j.oceaneng.2026.124797","DOIUrl":"10.1016/j.oceaneng.2026.124797","url":null,"abstract":"<div><div>This study employs a fully nonlinear Boussinesq model, FUNWAVE 2.0, to study the effect of periodic undulating topography (called as “Bragg breakwaters”) on harbor resonance induced by incident irregular waves. The continuous variation of the spectral peak frequency of irregular waves within a certain range is considered for the first time, focusing on revealing effects of its variation on the following parameters: (1) the optimal mitigation effects for individual resonant modes, (2) the overall optimal mitigation effect for the whole harbor resonance, and (3) their corresponding optimal wavelength ratios defined as twice the ratio of the topographic wavelength to the surface wavelength. Results demonstrate that the Bragg breakwater can effectively mitigate harbor resonance excited by irregular waves with varying spectral peak frequencies, not limited to the situations where the spectral peak frequency exactly matches one of eigenfrequencies of the harbor. However, the optimal wavelength ratios for individual modes are different from those for the whole harbor resonance, with both depending on the spectral peak frequency. Critically, when the spectral peak frequency varies between the two eigenfrequencies of adjacent modes, the optimal wavelength ratio for the lower mode consistently exceeds 1.0, while that for the higher mode remains below 1.0.</div></div>","PeriodicalId":19403,"journal":{"name":"Ocean Engineering","volume":"353 ","pages":"Article 124797"},"PeriodicalIF":5.5,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387105","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

Anomaly diagnosis of dynamic cable state based on LSTM-SAE 基于LSTM-SAE的电缆动态状态异常诊断

IF 5.5 2区工程技术

Ocean Engineering Pub Date : 2026-04-30 Epub Date: 2026-02-20 DOI: 10.1016/j.oceaneng.2026.124652

Xu Zhang , Haowen Yao , Haolang He , Yurun Zhu , Jiayi Wang

{"title":"Anomaly diagnosis of dynamic cable state based on LSTM-SAE","authors":"Xu Zhang , Haowen Yao , Haolang He , Yurun Zhu , Jiayi Wang","doi":"10.1016/j.oceaneng.2026.124652","DOIUrl":"10.1016/j.oceaneng.2026.124652","url":null,"abstract":"<div><div>Dynamic cables, a key component connecting floating platforms to static submarine cables, have significant economic implications for offshore wind projects when they fail. Therefore, accurate assessment of the operational status of dynamic cables and timely identification of potential faults are of great significance for ensuring the safe operation of offshore wind farms. In response to the technical challenge of the difficulty in detecting early micro-damage to dynamic cables, this study proposes a dynamic cable structural anomaly diagnosis method and diagnostic framework that integrates long short-term memory network (LSTM) and stacked auto-encoder (SAE). Based on real-time monitoring data, an extremum prediction algorithm is used to establish a dynamic threshold determination mechanism. Based on Marine environmental parameters, platform six-degree-of-freedom motion and dynamic cable tension information, a dynamic cable tension prediction model was constructed. According to the error between the true value and the predicted value, the abnormal diagnosis index of the dynamic cable in the normal state was calculated using the SAE method, and the diagnosis threshold was determined accordingly. Based on the real-time diagnostic indicators during the operation of the dynamic cable, the status of the dynamic cable is judged. This method can be used to accurately diagnose the status of dynamic cables when the degree of damage reaches more than 4%. The research results can effectively enhance the safety and reliability of the operation and maintenance of dynamic cables of floating wind turbines and provide theoretical basis and technical support for preventive maintenance.</div></div>","PeriodicalId":19403,"journal":{"name":"Ocean Engineering","volume":"353 ","pages":"Article 124652"},"PeriodicalIF":5.5,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147386761","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

LADRC-based wake tracking control via sideslip angle estimation for AUVs following the trajectories of near-surface targets 基于ladrc的近水面目标尾迹跟踪控制

IF 5.5 2区工程技术

Ocean Engineering Pub Date : 2026-04-30 Epub Date: 2026-02-21 DOI: 10.1016/j.oceaneng.2026.124680

Weichao He , Zhaochen Meng , Yuanzheng Li , Peng Xu , Xingfu Wan , Jianhua Liu , Hao Jin , Kecheng Zhang , Guangming Xie , Minyi Xu

{"title":"LADRC-based wake tracking control via sideslip angle estimation for AUVs following the trajectories of near-surface targets","authors":"Weichao He , Zhaochen Meng , Yuanzheng Li , Peng Xu , Xingfu Wan , Jianhua Liu , Hao Jin , Kecheng Zhang , Guangming Xie , Minyi Xu","doi":"10.1016/j.oceaneng.2026.124680","DOIUrl":"10.1016/j.oceaneng.2026.124680","url":null,"abstract":"<div><div>Autonomous underwater vehicles (AUVs) face considerable challenges in tracking the trajectories of near-surface targets due to nonlinear couplings, environmental disturbances, and pronounced sideslip effects, all of which significantly degrade the stability and accuracy of their control systems. In this paper, a wake-tracking control method is proposed for AUVs following the trajectories of surface targets. The controller integrates sideslip angle estimation with active disturbance rejection. A reduced-order extended state observer is constructed to estimate the real-time sideslip angle, representing the deviation between the vehicle's heading and its actual motion direction caused by wake-induced disturbances. Furthermore, a sideslip-estimation-based line-of-sight (LOS) guidance law is developed to generate coordinated yaw angle and surge velocity commands, thereby improving both directional control and speed regulation during wake tracking. Two linear active disturbance rejection controllers are subsequently designed to achieve decoupled and robust control of the yaw and surge channels. Simulation results demonstrate that the proposed method surpasses conventional LOS guidance and PID controllers integrated with disturbance observers in trajectory accuracy, lateral deviation suppression, convergence rate, and energy efficiency, thereby enabling stable and reliable wake tracking for AUVs in complex near-surface marine environments.</div></div>","PeriodicalId":19403,"journal":{"name":"Ocean Engineering","volume":"353 ","pages":"Article 124680"},"PeriodicalIF":5.5,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387097","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

An energy recovery device with variable damping for the Wave-Adaptive vehicle vibration control 一种用于车辆波动自适应振动控制的变阻尼能量回收装置

IF 5.5 2区工程技术

Ocean Engineering Pub Date : 2026-04-30 Epub Date: 2026-02-22 DOI: 10.1016/j.oceaneng.2026.124725

Penglei Ma , Lei Zhang , Bowen Qiao , Jing Cao , Bohuan Tan , Donghong Ning

{"title":"An energy recovery device with variable damping for the Wave-Adaptive vehicle vibration control","authors":"Penglei Ma , Lei Zhang , Bowen Qiao , Jing Cao , Bohuan Tan , Donghong Ning","doi":"10.1016/j.oceaneng.2026.124725","DOIUrl":"10.1016/j.oceaneng.2026.124725","url":null,"abstract":"<div><div>This study presents the design of an electromagnetic variable damping (VD) device for wave-adaptive vessels, with the dual objectives of suppressing hull platform vibrations and demonstrating energy recovery (ER) capability. In contrast to conventional wave-adaptive vessel designs that predominantly employ springs and dampers, the proposed variable damping device is implemented as a linear motor equipped with resistance adjustment capability. By dynamically regulating the resistance of an external variable resistance module connected to the linear motor, the equivalent electromagnetic force generated by the VD device can be controlled in real time. Experimental tests validate the proposed model and accurately identify its key parameters. Subsequently, the variable damping device was integrated into a quarter-scale ship test platform to assess its feasibility. The wave-induced displacement of the ship raft, derived from hydrodynamic analysis, was applied as the excitation input. Experimental results demonstrate the device's outstanding performance: under a 60 kg hull load, the platform displacement is reduced by more than 60% compared to the excitation level, and the acceleration is decreased by 72.5%. The system achieves an electromagnetic power of 66.7 W, an output power of 35.2 W, and an electromagnetic efficiency of 0.547. This device not only broadens the application scope of variable dampers but also extends the research domain of semi-active control, showing significant potential in the field of vibration control.</div></div>","PeriodicalId":19403,"journal":{"name":"Ocean Engineering","volume":"353 ","pages":"Article 124725"},"PeriodicalIF":5.5,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387099","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

Impact load identification for stiffened ship hull plates using TSVD-GCV regularization 基于TSVD-GCV正则化的加劲船体板冲击载荷识别

IF 5.5 2区工程技术

Ocean Engineering Pub Date : 2026-04-30 Epub Date: 2026-02-23 DOI: 10.1016/j.oceaneng.2026.124530

Yahui Fu , Li Guo , Xinyi Yu , Yuchao Yuan , Wenyong Tang

{"title":"Impact load identification for stiffened ship hull plates using TSVD-GCV regularization","authors":"Yahui Fu , Li Guo , Xinyi Yu , Yuchao Yuan , Wenyong Tang","doi":"10.1016/j.oceaneng.2026.124530","DOIUrl":"10.1016/j.oceaneng.2026.124530","url":null,"abstract":"<div><div>Identification of transient impact loads on stiffened ship hull plates is critical for structural safety assessment, yet this is typically an ill-posed inverse problem. This paper proposes a time-domain load identification method based on the unit impulse superposition principle. A numerical-experimental hybrid strategy is employed, where impact tests on a stiffened plate model were systematically designed and conducted to acquire real strain responses, combined with the transfer matrix constructed via finite element simulations. To address the ill-posedness inherent in the inverse process, the Truncated Singular Value Decomposition (TSVD) method with the Generalized Cross-Validation (GCV) criterion is adopted. Furthermore, the influence of the calculation time step is investigated by defining a dimensionless ratio of the time step to the load rise time, and the optimal ratio balancing accuracy and stability is identified. Crucially, to mitigate the spatial correlation of structural responses, a sensor placement optimization strategy based on breaking spatial symmetry is proposed. By reducing information redundancy and the condition number of the transfer matrix, this asymmetric arrangement significantly enhances numerical stability. Experimental validation demonstrates that the proposed method achieves high accuracy in reconstructing the time histories of impact loads at different locations.</div></div>","PeriodicalId":19403,"journal":{"name":"Ocean Engineering","volume":"353 ","pages":"Article 124530"},"PeriodicalIF":5.5,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387101","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

Study on the enhancement of wave energy capture performance of Savonius hydrokinetic turbines using rear-mounted curved deflectors 后置弯曲导流板提高萨伏纽斯水轮机波浪能捕获性能的研究

IF 5.5 2区工程技术

Ocean Engineering Pub Date : 2026-04-30 Epub Date: 2026-02-23 DOI: 10.1016/j.oceaneng.2026.124622

Fengshen Li , Weixin Yang , Renwei Ji , Claes Eskilsson , Hanbin Gu , Congjie Ren , Ruiyin Song

{"title":"Study on the enhancement of wave energy capture performance of Savonius hydrokinetic turbines using rear-mounted curved deflectors","authors":"Fengshen Li , Weixin Yang , Renwei Ji , Claes Eskilsson , Hanbin Gu , Congjie Ren , Ruiyin Song","doi":"10.1016/j.oceaneng.2026.124622","DOIUrl":"10.1016/j.oceaneng.2026.124622","url":null,"abstract":"<div><div>Savonius-type hydrokinetic turbines (SHTs), recognized for their self-starting capability and structural simplicity, have recently been explored as candidates for wave energy conversion (WEC). However, their inherently low energy capture efficiency (ECE) remains a significant barrier to practical application. To address this challenge, a rear-mounted curved deflector—specifically designed to accommodate the circular or elliptical trajectories of wave-induced flows—was investigated for its potential to enhance SHT performance in complex wave environments. A combination of wave flume experiments and computational fluid dynamics (CFD) simulations was employed to systematically assess the influence of deflector parameters, including horizontal offset (<em>x/D</em>), vertical submergence (<em>y/D</em>), and coverage angle (0°–72°), on flow modulation and turbine torque. Results indicate that the rear-mounted deflector increases the maximum energy conversion efficiency by 31.7% across a range of wave conditions, demonstrating robust adaptability. Mechanistic analysis further reveals that maintaining the integrity of the terminal deflector section is essential for sustaining Venturi-induced pressure gains and reverse vortex shielding. These findings not only demonstrate the effectiveness of rear-mounted deflector configurations but also provide practical design guidance, supporting the advancement of SHTs as a promising new approach to wave energy conversion.</div></div>","PeriodicalId":19403,"journal":{"name":"Ocean Engineering","volume":"353 ","pages":"Article 124622"},"PeriodicalIF":5.5,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387104","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

Prediction of FOWT mooring tension during non-stationary typhoon transit: a Transformer based framework with Bayesian optimization 非静止台风过境时fot系泊张力预测：基于变压器的贝叶斯优化框架

IF 5.5 2区工程技术

Ocean Engineering Pub Date : 2026-04-30 Epub Date: 2026-02-21 DOI: 10.1016/j.oceaneng.2026.124758

Gang Ma , Hairui Jiang , Hailong Chen , Ke Sun , Jianhua Zhang , Huaisong Yang

{"title":"Prediction of FOWT mooring tension during non-stationary typhoon transit: a Transformer based framework with Bayesian optimization","authors":"Gang Ma , Hairui Jiang , Hailong Chen , Ke Sun , Jianhua Zhang , Huaisong Yang","doi":"10.1016/j.oceaneng.2026.124758","DOIUrl":"10.1016/j.oceaneng.2026.124758","url":null,"abstract":"<div><div>The dynamic evolution of typhoons is marked by pronounced non-stationarity and extreme nonlinearity, featuring rapid wind speed fluctuations that critically threaten the structural integrity of Floating Offshore Wind Turbines (FOWT). Conventional steady-state simulations frequently inadequately represent the transient coupling effects induced by a rapidly transiting typhoon. Therefore, a 12-h non-stationary typhoon model is developed to explicitly capture the continuous “approach-peak-decay” lifecycle, thereby ensuring physical consistency in the simulated aerodynamic load response. Furthermore, a deep learning framework is developed to collaborate Transformer architecture with Gaussian process-based Bayesian optimization (GP-BO) strategy. The framework leverages mooring tension response data generated throughout the entire non-stationary typhoon transit to train and construct a high-precision surrogate model. Comparative analysis with the traditional Long Short-Term Memory with Self-Attention mechanism (LSTM-SA) model demonstrates that the established predictive model exhibits exceptional generalization capability, enabling accurate prediction of dynamic responses under previously unencountered sea conditions, with a correlation coefficient exceeding 0.90 against true values. This research provides a highly efficient and reliable surrogate modeling approach for the real-time safety monitoring and design optimization of FOWT mooring systems under extreme meteorological conditions.</div></div>","PeriodicalId":19403,"journal":{"name":"Ocean Engineering","volume":"353 ","pages":"Article 124758"},"PeriodicalIF":5.5,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147386763","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