Journal of Ocean Engineering and Science最新文献_第3页

A numerical model for the simulation of wave-induced erosion of floating icebergs: Implementation and validation against wave flume data 浮冰波浪侵蚀模拟的数值模型：对波浪水槽数据的实现和验证

IF 11.8 1区工程技术 Q1 ENGINEERING, MARINE

Journal of Ocean Engineering and Science

Pub Date : 2025-12-01 Epub Date: 2025-05-17 DOI: 10.1016/j.joes.2025.05.004

Behzad Forouzi Feshalami , Sveinung Løset , Raed Lubbad , Wenjun Lu , Henriette Skourup , Marat Kashafutdinov

An innovative approach is proposed in this paper to develop a three-dimensional numerical model to simulate the wave-induced erosion of a floating iceberg. The simulation domain is divided into three zones, i.e., inside the iceberg, outside the iceberg, and the interface between the two zones. While computational fluid dynamics is used to model heat conduction inside the iceberg, a hydrodynamic analysis based on linear wave theory and potential flow theory is performed to account for wave effects. The main objective of this paper is to implement the developed numerical model and validate it against experimental data obtained from a wave flume. Three case studies are designed to compare the results of numerical simulations against experimental data: Case #1: the melting rate and mass loss rate of a bottom-fixed ice cylinder is studied under wave erosion; Case #2: focusing on the hydrodynamic part: the response amplitude operator of a free-heaving ice cylinder is analyzed; and Case #3: coupling both the hydrodynamic and thermodynamic processes, the mass loss rate of a heaving ice cylinder is investigated in different wave periods. Results indicate that the model can predict melting rates in the first case study near the still water level where wave-induced erosion is the dominant mechanism. In addition, the outputs of numerical modeling in terms of the mass loss rate of a heaving ice cylinder closely follow those of experimental data, particularly around the critical wave period where the mass loss rate significantly increases due to dramatic ice cylinder heave motion (resonance).

本文提出了一种创新的方法来建立一个三维数值模型来模拟浮冰的波浪侵蚀。将模拟域划分为冰山内部、冰山外部以及冰山与冰山之间的界面三个区域。计算流体力学用于模拟冰山内部的热传导，而基于线性波动理论和势流理论的流体力学分析则用于解释波浪效应。本文的主要目的是实现所建立的数值模型，并与波浪水槽的实验数据进行验证。设计了三个实例，将数值模拟结果与实验数据进行比较：案例1：研究了波浪侵蚀作用下底部固定冰筒的融化速率和质量损失率；案例#2：以水动力部分为重点，分析了自由起伏冰筒的响应幅值算子；和案例#3：耦合流体动力和热力学过程，研究了不同波浪周期下升沉冰筒的质量损失率。结果表明，该模型可以预测静水位附近的融化速度，其中波浪侵蚀是主要机制。此外，数值模拟的振荡冰柱质量损失率与实验数据非常接近，特别是在振荡冰柱剧烈振荡（共振）导致质量损失率显著增加的临界波周期附近。

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引用次数: 0

Dynamic analysis of submersible gravity-type fish cages with single-point mooring design 单点系泊潜水式重力式网箱动力分析

IF 11.8 1区工程技术 Q1 ENGINEERING, MARINE

Journal of Ocean Engineering and Science

Pub Date : 2025-12-01 Epub Date: 2025-08-28 DOI: 10.1016/j.joes.2025.08.009

Xueliang Wen, Muk Chen Ong

This study presents a conceptual design for a cost-effective submersible gravity-type fish cage with a single-point mooring design. The performance of the new design in reducing environmental loads under extreme sea conditions is demonstrated using an in-house numerical code package. The effectiveness of the submerging and surfacing operations of the fish cages is validated through numerical simulations. In the present code package, irregular wave modelling is employed to generate the wave elevations, velocities and accelerations, and the hydrodynamic forces acting on the fish cages and mooring system are calculated using the Morison model. A submersible model for the floating collar is developed to simulate the submerging and surfacing operations of the fish cages. The deformations of the fish cage system are calculated using a modified extended position based dynamics (XPBD) method combined with a mode superposition method. Results show that tension in the mooring system is significantly reduced when fish cages are submerged in the water layer with lower current speeds, and extending the buoy line to lower the conjunction point helps maintain fish cages in the desired water layer under extreme sea conditions. Flooding the outer tubes of the floating collar allows the fish cages to smoothly submerge to the desired water depth. The surfacing designs based on the compressed air and the lifting operation of the bottom sinker can enable the cages to ascend to the water surface. The submerging and surface operations are proved to be completed within six minutes. The new design based on the lifting operation of the bottom sinker, is safer and more cost-effective than the design based on compressed air for the surfacing operation. The design of the submersible single-point mooring gravity-type fish cage is thereby validated through the present numerical methods, offering valuable insights for future aquaculture design and implementation.

本研究提出了一种具有成本效益的潜水式重力式单点系泊鱼笼的概念设计。新设计在极端海洋条件下减少环境负荷的性能使用内部数字代码包进行了演示。通过数值模拟验证了网箱下潜和上浮操作的有效性。在本程序包中，采用不规则波浪模型来产生波浪的高程、速度和加速度，并使用Morison模型计算作用于鱼笼和系泊系统的水动力。建立了浮领的潜水模型，模拟了网箱的潜水和上浮过程。采用改进的扩展位置动力学（XPBD）方法结合模态叠加法计算了网箱系统的变形。结果表明，当网箱以较低的水流速度沉入水层时，系泊系统的张力明显减小，延长浮筒线以降低连接点有助于在极端海况下将网箱维持在所需水层。向浮环的外管注水，可以使鱼笼顺利浸入所需的水深。基于压缩空气的水面设计和底沉器的提升操作可以使网箱上升到水面。水下作业和水面作业均在6分钟内完成。新设计基于底沉器的提升作业，比基于压缩空气的水面作业设计更安全，更具成本效益。从而通过本文的数值方法验证了潜水式单点系泊重力式鱼笼的设计，为未来水产养殖的设计和实施提供了有价值的见解。

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引用次数: 0

Modelling of biological impacts of contra-rotating propeller reversible pump turbines on migratory fishes 对旋螺旋桨可逆泵水轮机对洄游鱼类生物影响的建模

IF 11.8 1区工程技术 Q1 ENGINEERING, MARINE

Journal of Ocean Engineering and Science

Pub Date : 2025-12-01 Epub Date: 2025-08-06 DOI: 10.1016/j.joes.2025.08.002

A Miccoli , A De Luca , M Marcelli , M Joseph , M Zangeneh , J Bricker , M Peviani , G Scapigliati

Hydropower plays a critical role in global renewable energy production, yet its environmental impacts on aquatic ecosystems remain a concern. This study investigates the biological impacts of Shaft-Driven Variable-Speed Contra-Rotating Propeller Reversible Pump Turbines (SDCRRPTs) on fish populations, using Atlantic salmon (Salmo salar) and European eel (anguilla) as experimental models. These species present critical ecological and conservation traits, making them ideal models for assessing hydropower-induced stressors such as rapid decompression, shear, collision, and turbulence. Through Computational Fluid Dynamics (CFD) simulations and the Biological Performance Assessment (BioPA) tool, two SDCRRPT prototypes were evaluated under varying operating conditions. Results indicate that rapid decompression posed minimal risks, while shear stress was the primary cause of mortality for salmon, and collision effects were moderate but species-dependent. The optimized turbine design (Prototype 1) demonstrated improvements in adult fish passage safety compared to the initial design, particularly for eels, yet persistent vulnerabilities highlight the need for further refinements and protective measures, such as physical, mechanical or sensory behavioral barriers combined with bypass systems, to mitigate unavoidable mortality risks during turbine passage. The findings highlight the potential for species-specific design optimization to balance ecological conservation with sustainable energy production. This work underscores the importance of integrating environmental considerations into hydropower technologies to support the EU's decarbonization goals while safeguarding aquatic biodiversity.

水电在全球可再生能源生产中发挥着至关重要的作用，但其对水生生态系统的环境影响仍然令人担忧。本研究以大西洋鲑鱼（Salmo salar）和欧洲鳗鲡（anguilla）为实验模型，研究轴驱动变速对转螺旋桨可逆泵涡轮机（SDCRRPTs）对鱼类种群的生物学影响。这些物种表现出关键的生态和保护特征，使它们成为评估水力诱发的压力源（如快速减压、剪切、碰撞和湍流）的理想模型。通过计算流体动力学（CFD）模拟和生物性能评估（BioPA）工具，在不同的操作条件下对两个SDCRRPT原型进行了评估。结果表明，快速减压造成的风险最小，而剪切应力是鲑鱼死亡的主要原因，碰撞效应中等，但依赖于物种。与初始设计相比，优化后的涡轮设计（原型1）在成鱼通道安全性方面有所提高，特别是对鳗鱼而言，但持续存在的脆弱性凸显了进一步改进和保护措施的必要性，例如物理、机械或感觉行为障碍与旁路系统相结合，以减轻涡轮通道中不可避免的死亡风险。研究结果强调了物种特定设计优化的潜力，以平衡生态保护与可持续能源生产。这项工作强调了将环境因素纳入水电技术的重要性，以支持欧盟的脱碳目标，同时保护水生生物多样性。

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引用次数: 0

CSUB: Design and modeling of an autonomous screw-driven amphibious vehicle 自主螺旋驱动水陆两栖车辆的设计与建模

IF 11.8 1区工程技术 Q1 ENGINEERING, MARINE

Journal of Ocean Engineering and Science

Pub Date : 2025-12-01 Epub Date: 2025-07-21 DOI: 10.1016/j.joes.2025.07.003

Yan Kai , Pengfei Xu , Hailong Lin , Chengrui Sun , Min Zhao , Guangqian Du

The ever-expanding frontier of applications demands that mobile vehicles navigate challenging, complex, and rugged terrains, as well as diverse environments. In this paper, we presented the novel design of an autonomous amphibious vehicle, driven by Archimedean screw mechanisms. Hydrodynamic simulations were conducted to analyze the propulsive characteristics of screw mechanisms in water. Particularly, an innovative screw-propeller integrated structure was proposed. At a rotation speed of 1000 rpm, the generated thrust of the integrated structure increased by 50 % compared with the original screw, indicating a significant improvement in propulsion performance. Simultaneously, we analyzed its contact with the terrain by using the discrete element method. The process was simulated through a co-simulation involving multi-body dynamics, which presented an analytical method for investigating vehicle-terrain contact mechanics. Finally, a series of performance and field experiments were carried out. The vehicle successfully traversed various terrains including sandy, gravel, and grass roads, overcoming a 5 cm high obstacle. Furthermore, it autonomously executed offshore and landing movements, and showcased excellent amphibious trafficability at the coast. Overall, our research provides valuable insights into the development of autonomous screw-driven vehicles, offering a wide range of application prospects.

不断扩展的应用领域要求移动车辆在具有挑战性、复杂和崎岖的地形以及不同的环境中行驶。本文提出了一种新型的阿基米德螺旋机构驱动的自主水陆两栖车辆。通过水动力模拟分析了螺旋机构在水中的推进特性。特别提出了一种新型的螺旋-螺旋桨一体化结构。在转速为1000 rpm时，集成结构产生的推力比原来的螺杆增加了50 %，表明推进性能有了显著提高。同时，利用离散元法分析了其与地形的接触。通过多体动力学联合仿真对该过程进行了仿真，为研究车辆-地形接触力学提供了一种分析方法。最后，进行了一系列性能试验和现场试验。该车辆成功穿越了沙地、砾石、草地等多种地形，克服了5厘米高的障碍物。此外，它自主执行近海和登陆运动，并在海岸展示了出色的两栖交通能力。总的来说，我们的研究为自动驾驶螺旋驱动车辆的发展提供了宝贵的见解，提供了广泛的应用前景。

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引用次数: 0

Magnetohydrodynamics stagnation point flow of tangent hyperbolic fluid over a non-flat rotating disk in intuitionistic fuzzy environment 直觉模糊环境下非平坦旋转圆盘上正切双曲流体的磁流体力学滞止点流动

IF 11.8 1区工程技术 Q1 ENGINEERING, MARINE

Journal of Ocean Engineering and Science

Pub Date : 2025-12-01 Epub Date: 2025-07-12 DOI: 10.1016/j.joes.2025.07.001

Priya Bartwal , B.P. Joshi , Himanshu Upreti , Alok Kumar Pandey , Dharmendra Tripathi

An analysis is performed for the three-dimensional stagnation point flow of magnetized tangent hyperbolic fluid over a rotating disk of variable thickness. The viscosity and thermal conductivity of the fluid are presumed to depend on the temperature. Moreover, the impact of various physical parameters i.e., variable dynamical viscosity, variable thermal conductivity, velocity ratio, thermal stratification, Weissenberg number, Biot number and Eckert number are considered. Here we use the intuitionistic fuzzy set (IFS), which is an extension of fuzzy set, to study the flow and heat transfer analysis. IFS is a better tool for deal with uncertainty and complex modelling. The transformed ODEs are changed into intuitionistic fuzzy differential equations (IFDEs) and then solved by applying

(α, β)

-cut method, and the notion of triangular intuitionistic fuzzy number (TIFN). The outcomes attained from the solutions of IFDEs are depicted by figures, and results are reliable as calculated with the numerical technique “bvp4c”. The study reports that a rise of 40.68% in local Nusselt number (LNN) is seen when the velocity ratio parameter is raised from 0.1 to 0.4, whereas a rise of 5.26% is noted when the variable thermal conductivity parameter is increased from -0.5 to 0.5.

对磁化正切双曲流体在变厚度旋转圆盘上的三维滞止点流动进行了分析。假定流体的粘度和热导率取决于温度。此外，还考虑了变动力粘度、变导热系数、速度比、热分层、Weissenberg数、Biot数和Eckert数等物理参数的影响。本文采用模糊集的扩展——直觉模糊集（IFS）来研究流动和传热分析。IFS是处理不确定性和复杂建模的较好工具。将变换后的模糊微分方程转化为直觉模糊微分方程（IFDEs），然后应用（α,β）切法和三角直觉模糊数（TIFN）概念求解。利用数值技术“bvp4c”计算得到的结果是可靠的。研究报告，当流速比参数从0.1提高到0.4时，局部努塞尔数（LNN）上升了40.68%，而当变导热系数参数从-0.5提高到0.5时，局部努塞尔数（LNN）上升了5.26%。

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引用次数: 0

MINS: Tightly coupled MultiBeam EchoSounder Inertial Navigation System for 3D bathymetric underwater inspection MINS：用于三维水下测深检测的紧密耦合多波束回声测深惯性导航系统

IF 11.8 1区工程技术 Q1 ENGINEERING, MARINE

Journal of Ocean Engineering and Science

Pub Date : 2025-12-01 Epub Date: 2025-09-18 DOI: 10.1016/j.joes.2025.08.010

Pau Vial, Roger Pi, Narcís Palomeras, Marc Carreras

By fusing a MultiBeam EchoSounder (MBES) with an Inertial Measurement Unit (IMU) and a Doppler Velocity Log (DVL) we present MINS: a graph-based, tightly coupled, and featureless MBES-Inertial Navigation System that enables accurate and real-time robot trajectory estimation, map building, and sensor bias estimation. MINS formulates an MBES-Inertial odometry problem for an Autonomous Underwater Vehicle (AUV) using a factor graph. The relative displacement estimated from the joint IMU and DVL preintegration is used to chain keyframes and to build 3D scans from a Mechanical Scanning MBES. This sensor allows the AUV to be immersed within the inspected scene to build a 3D point cloud map — which we call 3D bathymetry — compared to conventional systems that use an AUV navigating above the inspected area to collect a 2.5D bathymetry. The obtained scans are aligned to set sonar odometry or loop closure factors, by applying a probabilistic registration algorithm that uses Gaussian Mixture Models to represent the scans and quantify the alignment uncertainty. A rigorous on-manifold formulation is provided, which properly models the AUV state uncertainty in a compact Lie group. This system is evaluated in a field experiment demonstrating its ability to produce an accurate and consistent 3D bathymetry of a shipwreck.

通过将多波束回声测深仪（MBES）与惯性测量单元（IMU）和多普勒速度日志（DVL）融合，我们提出了MINS：一种基于图形的、紧密耦合的、无特征的MBES-惯性导航系统，可以实现精确和实时的机器人轨迹估计、地图构建和传感器偏差估计。MINS利用因子图提出了自主水下航行器（AUV）的mbes -惯性里程计问题。从关节IMU和DVL预积分中估计的相对位移用于链接关键帧并从机械扫描MBES构建3D扫描。与传统系统相比，该传感器允许AUV沉浸在被检测的场景中，建立3D点云图，我们称之为3D测深，而传统系统使用AUV在被检测区域上方导航来收集2.5D测深。通过应用概率配准算法（使用高斯混合模型表示扫描并量化对齐不确定性），将获得的扫描对齐到设置声纳里程计或环路关闭因子。给出了一个严格的流形公式，该公式能很好地描述紧李群中AUV状态的不确定性。该系统在现场实验中进行了评估，证明了其能够产生准确和一致的沉船三维水深测量。

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引用次数: 0

Shoreline oil spill risk assessment in the Persian Gulf: a spatiotemporal approach using pyGNOME simulations and Sentinel observations 波斯湾海岸线溢油风险评估：使用pyGNOME模拟和Sentinel观测的时空方法

IF 11.8 1区工程技术 Q1 ENGINEERING, MARINE

Journal of Ocean Engineering and Science

Pub Date : 2025-12-01 Epub Date: 2025-08-05 DOI: 10.1016/j.joes.2025.08.001

Danial Ghaderi

The Persian Gulf (PG) is a strategically vital yet ecologically fragile region, highly susceptible to oil spill hazards due to intensive offshore petroleum activities and complex hydrodynamic conditions. In this study, a Shoreline Risk Index (SRI) was developed to evaluate the vulnerability of PG shorelines to potential oil pollution. A total of 18000 spatiotemporal oil spill scenarios were simulated using the pyGNOME model, with each scenario assigned a specific weight based on its spatial impact. The simulations were calibrated using Sentinel-1 and Sentinel-2, incorporating real spill observations near Kharg Island to ensure model reliability. Sensitivity analysis revealed Windage Range and Half-life as the most influential parameters in oil spill dispersion, emphasizing the need for regional calibration instead of relying on default values. In contrast, the Diffusion Coefficient showed limited sensitivity unless drastically altered. The computed SRI identified the United Arab Emirates as the most vulnerable country, followed by Bahrain and Qatar, due to their exposure to prevailing wind and current patterns and proximity to dense offshore operations. Although Iran's extensive shoreline exhibited relatively lower average risk, certain areas near major oil terminals—such as Kharg and Lavan Islands—showed elevated vulnerability. Offshore islands across the PG were also consistently at high risk. Given the transboundary nature of oil spills in the PG, this study highlights the urgent need for coordinated regional monitoring and response led by relevant multilateral organizations. The developed methodology offers a robust and scalable framework for future oil spill risk assessments and coastal management in the PG.

波斯湾（PG）是一个具有重要战略意义但生态脆弱的地区，由于密集的海上石油活动和复杂的水动力条件，极易发生溢油危险。本研究建立了岸线风险指数（SRI）来评价PG岸线对潜在石油污染的脆弱性。利用pyGNOME模型模拟了18000个时空溢油情景，并根据每个情景的空间影响分配了特定的权重。模拟使用了Sentinel-1和Sentinel-2进行校准，并结合了Kharg岛附近的实际泄漏观测，以确保模型的可靠性。灵敏度分析显示，Windage Range和Half-life是影响溢油扩散的最重要参数，强调需要区域校准而不是依赖默认值。相反，扩散系数显示有限的灵敏度，除非急剧改变。计算出的SRI将阿拉伯联合酋长国确定为最脆弱的国家，其次是巴林和卡塔尔，因为它们暴露于盛行风和洋流模式，并且靠近密集的海上作业。尽管伊朗广阔的海岸线显示出相对较低的平均风险，但靠近主要石油码头的某些地区，如Kharg和Lavan岛，显示出较高的脆弱性。太平洋沿岸的近海岛屿也一直处于高风险之中。鉴于太平洋地区石油泄漏的跨界性质，本研究强调了由相关多边组织领导的协调区域监测和应对的迫切需要。所开发的方法为PG的未来溢油风险评估和海岸管理提供了一个强大且可扩展的框架。

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引用次数: 0

Innovative comprehensive model and future strategies for the installation of wave power plants: A case study in the black sea, Turkey 波浪发电装置的创新综合模式和未来战略：以土耳其黑海为例

IF 11.8 1区工程技术 Q1 ENGINEERING, MARINE

Journal of Ocean Engineering and Science

Pub Date : 2025-12-01 Epub Date: 2025-08-22 DOI: 10.1016/j.joes.2025.08.007

Ozan AKDAĞ

This study proposes a novel and structured model to accelerate the deployment of wave energy systems by integrating them with offshore wind technologies in a hybrid configuration. The model employs a multi-step methodology, comprising sub-location selection based on elimination criteria, site prioritization using a Multi-Criteria Stability Index (M-CSI), estimation of resource potential from meteorological data, technology matching, and hybrid system operation. A real-case validation is conducted in Turkey’s Black Sea region, identifying Kumköy as the most suitable site. The wave energy potential in Kumköy is estimated to be between 0.75 and 4.6875 kW/m, and the wind power potential reaches 1.102 MW. A 4 MW hybrid facility is designed to produce 12,193.506 MWh annually. The techno-economic analysis identifies three representative LCoE values for the hybrid system: 168.51, 231.5824, and 277.295 EUR/MWh, reflecting variations in system performance and economic parameters. Environmental impact is also assessed: if fossil fuels were used instead, the social cost of carbon emissions would be approximately $418,237.26 for natural gas and $699,977.28 for coal. By offering a holistic roadmap for site selection, technology integration, and economic evaluation, this model aims to overcome key barriers in wave and ocean energy development and support global renewable energy targets.

本研究提出了一种新颖的结构化模型，通过将波浪能系统与海上风能技术集成在混合配置中来加速波浪能系统的部署。该模型采用多步骤方法，包括基于消除标准的子位置选择，使用多标准稳定性指数（M-CSI）的站点优先级排序，从气象数据估计资源潜力，技术匹配和混合系统运行。在土耳其黑海地区进行了实际案例验证，确定Kumköy是最合适的地点。Kumköy的波浪能势估计在0.75 ~ 4.6875 kW/m之间，风电潜力达到1.102 MW。一个4兆瓦的混合设施设计为每年生产12,193.506兆瓦时。技术经济分析确定了混合系统的三个代表性LCoE值：168.51、231.5824和277.295欧元/兆瓦时，反映了系统性能和经济参数的变化。还评估了环境影响：如果改用化石燃料，碳排放的社会成本约为天然气418,237.26美元，煤炭699,977.28美元。通过提供选址、技术整合和经济评估的整体路线图，该模型旨在克服波浪和海洋能源开发中的关键障碍，并支持全球可再生能源目标。

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引用次数: 0

Comparative risk assessment of gaseous and liquid hydrogen fuel gas supply systems for hydrogen-fueled vessels 氢燃料容器用气态和液态氢燃料供气系统的比较风险评估

IF 11.8 1区工程技术 Q1 ENGINEERING, MARINE

Journal of Ocean Engineering and Science

Pub Date : 2025-12-01 Epub Date: 2025-08-15 DOI: 10.1016/j.joes.2025.08.004

Jinyeong Jeong , Minsoo Choi , Hwalong You , Daejun Chang

This study compares qualitative risk analyses of compressed hydrogen gas (GH₂) and liquid hydrogen (LH₂) fuel gas supply systems (FGSSs) for eco-friendly marine vessels. Using hazard identification (HAZID) and hazard and operability (HAZOP) methodologies, the study systematically identifies and compares the unique risks and safety strategies for GH₂ and LH₂ FGSS. For GH₂-FGSS, HAZID identifies 22 hazards, with one unacceptable risk related to potential explosions from high-pressure hydrogen accumulation due to ventilation failure. HAZOP identifies 27 hazards, all categorized as acceptable or ALARP. Recommended safety measures include pressure protection devices, real-time alarms, and enhanced piping durability. For LH₂-FGSS, HAZID identifies 38 hazards without any unacceptable risks, though cryogenic icing and overpressure remain significant concerns. HAZOP reveals 43 hazards, with one unacceptable risk involving thermal contraction and piping damage from repeated operations, posing fire hazards. Suggested mitigations include improved cooling and purge gas procedures, along with rigorous insulation management. Primary differences in safety management focus on high explosion risk of GH₂-FGSS from high-pressure storage and the piping damage risk of LH₂-FGSS from icing and thermal contraction. To enhance risk management for each system, future research implements an operational simulation-based quantitative risk assessment. This study provides foundational safety strategies and guidelines for future vessels, supporting the adoption of eco-friendly fuels in the maritime industry.

本研究比较了用于环保船舶的压缩氢气（GH2）和液态氢（LH2）燃料气体供应系统（fgss）的定性风险分析。利用危害识别（HAZID）和危害与可操作性（HAZOP）方法，该研究系统地识别和比较了GH2和LH2 FGSS的独特风险和安全策略。对于GH2-FGSS， HAZID确定了22种危险，其中一种不可接受的风险与通风故障引起的高压氢气积聚的潜在爆炸有关。HAZOP识别了27种危害，全部分类为可接受或ALARP。推荐的安全措施包括压力保护装置、实时报警和增强管道耐久性。对于LH2-FGSS， HAZID确定了38种危险，没有任何不可接受的风险，尽管低温结冰和超压仍然是重要的问题。HAZOP揭示了43种危险，其中一种不可接受的风险涉及热收缩和反复操作造成的管道损坏，存在火灾危险。建议的缓解措施包括改进冷却和吹扫气体程序，以及严格的绝缘管理。安全管理的主要区别在于高压储存的GH2-FGSS的高爆炸风险和结冰和热收缩的LH2-FGSS的管道损坏风险。为了加强对各个系统的风险管理，未来的研究将实现基于操作模拟的定量风险评估。这项研究为未来船舶提供了基本的安全策略和指导方针，支持海事行业采用环保燃料。

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引用次数: 0

Enhanced intelligent reconstruction study on wind wave height field in the South China Sea 南海风浪高场增强智能重建研究

IF 11.8 1区工程技术 Q1 ENGINEERING, MARINE

Journal of Ocean Engineering and Science

Pub Date : 2025-12-01 Epub Date: 2025-02-17 DOI: 10.1016/j.joes.2025.02.001

Chenglin Li , Hang Xu , Xiaochen Feng , Qiang Sun

This paper addresses the challenge of scarcity and discontinuity in spatio-temporal observation data within oceanographic research. The primary goal is to develop a robust model capable of generating missing wave height data and enhancing the understanding of ocean wave behavior. We propose an end-to-end spatio-temporal sequence generation network based on convolutional U-Net, utilizing reanalyzed atmospheric datasets from the European Centre for Medium-Range Weather Forecasts (ECMWF). The model incorporates input features such as wind wave height, wave direction, mean wave period, and wind speed to generate significant wind wave heights in the South China Sea at specified times. Data smoothing was applied at intervals of 12, 24, and 36 h under both moderate and extreme wave conditions, resulting in wave height data at 6-hour intervals. The findings demonstrate that the model effectively captures areas with high wave heights, outperforming traditional interpolation-based methods, especially as input data time intervals increase and wave conditions intensify. This approach offers a novel solution for generating missing spatio-temporal data, providing valuable insights into ocean wave behavior and supporting applications in ocean engineering.

本文解决了海洋研究中时空观测数据的稀缺性和不连续性的挑战。主要目标是开发一个强大的模型，能够生成缺失的波高数据，并增强对海浪行为的理解。我们提出了一个基于卷积U-Net的端到端时空序列生成网络，利用欧洲中期天气预报中心（ECMWF）重新分析的大气数据集。该模式结合风浪高度、波浪方向、平均波周期和风速等输入特征，在特定时间生成南海显著的风浪高度。在中等和极端波浪条件下，每隔12、24和36小时对数据进行平滑处理，得到每隔6小时的波高数据。研究结果表明，该模型有效地捕获了高波高区域，优于传统的基于插值的方法，特别是当输入数据时间间隔增加和波浪条件加剧时。该方法为生成缺失的时空数据提供了一种新颖的解决方案，为海浪行为提供了有价值的见解，并支持海洋工程中的应用。

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引用次数: 0