Songmao Zhang , Jinju Liu , Yu Liu , Weiqian Tian , Jingdong Hu , Yuren Wang
{"title":"In-situ visualization of hydrostatic-dependent mechanical deformation evolution for underwater acoustic coating using customized X-ray imaging technology","authors":"Songmao Zhang , Jinju Liu , Yu Liu , Weiqian Tian , Jingdong Hu , Yuren Wang","doi":"10.1016/j.joes.2025.10.008","DOIUrl":"10.1016/j.joes.2025.10.008","url":null,"abstract":"<div><div>Acoustic absorption in underwater coatings decreases with increasing hydrostatic pressure due to pressure-induced morphological changes in embedded air cavities. However, limited experimental characterization and imprecise modeling of cavity deformation under high pressure have hindered both theoretical progress and mechanistic understanding. Here, we use X-ray computed tomography (CT) to measure cavity deformation in situ, establishing a multiscale framework to analyze structural changes over 0–10 MPa. In situ measurements and improved imaging techniques allow accurate tracking of microstructural changes under triaxial stress, revealing patterns of cavity evolution and petal-like deformations caused by edge effects. By combining experiments and simulations, we demonstrate that cavity volume contraction follows a nonlinear power-law dependence on hydrostatic pressure and explain stress-concentration mechanisms at cavity-matrix interfaces. Impedance-tube experiments and numerical modeling show that CT-informed models that account for edge effects outperform simplified models. This work offers technological support and new analytical methods for designing pressure-resistant, low-frequency broadband underwater acoustic coatings.</div></div>","PeriodicalId":48514,"journal":{"name":"Journal of Ocean Engineering and Science","volume":"11 1","pages":"Pages 154-162"},"PeriodicalIF":11.8,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146102811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Expression of Concern on previously published articles","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":48514,"journal":{"name":"Journal of Ocean Engineering and Science","volume":"11 6","pages":"Page 2396"},"PeriodicalIF":5.8,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149175765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A numerical model for the simulation of wave-induced erosion of floating icebergs: Implementation and validation against wave flume data","authors":"Behzad Forouzi Feshalami , Sveinung Løset , Raed Lubbad , Wenjun Lu , Henriette Skourup , Marat Kashafutdinov","doi":"10.1016/j.joes.2025.05.004","DOIUrl":"10.1016/j.joes.2025.05.004","url":null,"abstract":"<div><div>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).</div></div>","PeriodicalId":48514,"journal":{"name":"Journal of Ocean Engineering and Science","volume":"10 6","pages":"Pages 968-981"},"PeriodicalIF":11.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145469016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dynamic analysis of submersible gravity-type fish cages with single-point mooring design","authors":"Xueliang Wen, Muk Chen Ong","doi":"10.1016/j.joes.2025.08.009","DOIUrl":"10.1016/j.joes.2025.08.009","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":48514,"journal":{"name":"Journal of Ocean Engineering and Science","volume":"10 6","pages":"Pages 1155-1171"},"PeriodicalIF":11.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145469104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A Miccoli , A De Luca , M Marcelli , M Joseph , M Zangeneh , J Bricker , M Peviani , G Scapigliati
{"title":"Modelling of biological impacts of contra-rotating propeller reversible pump turbines on migratory fishes","authors":"A Miccoli , A De Luca , M Marcelli , M Joseph , M Zangeneh , J Bricker , M Peviani , G Scapigliati","doi":"10.1016/j.joes.2025.08.002","DOIUrl":"10.1016/j.joes.2025.08.002","url":null,"abstract":"<div><div>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 (<em>Salmo salar</em>) and European eel (<em>anguilla</em>) 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.</div></div>","PeriodicalId":48514,"journal":{"name":"Journal of Ocean Engineering and Science","volume":"10 6","pages":"Pages 1061-1069"},"PeriodicalIF":11.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145469107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yan Kai , Pengfei Xu , Hailong Lin , Chengrui Sun , Min Zhao , Guangqian Du
{"title":"CSUB: Design and modeling of an autonomous screw-driven amphibious vehicle","authors":"Yan Kai , Pengfei Xu , Hailong Lin , Chengrui Sun , Min Zhao , Guangqian Du","doi":"10.1016/j.joes.2025.07.003","DOIUrl":"10.1016/j.joes.2025.07.003","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":48514,"journal":{"name":"Journal of Ocean Engineering and Science","volume":"10 6","pages":"Pages 1031-1045"},"PeriodicalIF":11.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145469024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Magnetohydrodynamics stagnation point flow of tangent hyperbolic fluid over a non-flat rotating disk in intuitionistic fuzzy environment","authors":"Priya Bartwal , B.P. Joshi , Himanshu Upreti , Alok Kumar Pandey , Dharmendra Tripathi","doi":"10.1016/j.joes.2025.07.001","DOIUrl":"10.1016/j.joes.2025.07.001","url":null,"abstract":"<div><div>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 <span><math><mrow><mo>(</mo><mi>α</mi><mo>,</mo><mi>β</mi><mo>)</mo></mrow></math></span>-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.</div></div>","PeriodicalId":48514,"journal":{"name":"Journal of Ocean Engineering and Science","volume":"10 6","pages":"Pages 1002-1018"},"PeriodicalIF":11.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145469015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pau Vial, Roger Pi, Narcís Palomeras, Marc Carreras
{"title":"MINS: Tightly coupled MultiBeam EchoSounder Inertial Navigation System for 3D bathymetric underwater inspection","authors":"Pau Vial, Roger Pi, Narcís Palomeras, Marc Carreras","doi":"10.1016/j.joes.2025.08.010","DOIUrl":"10.1016/j.joes.2025.08.010","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":48514,"journal":{"name":"Journal of Ocean Engineering and Science","volume":"10 6","pages":"Pages 1172-1191"},"PeriodicalIF":11.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145469102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Shoreline oil spill risk assessment in the Persian Gulf: a spatiotemporal approach using pyGNOME simulations and Sentinel observations","authors":"Danial Ghaderi","doi":"10.1016/j.joes.2025.08.001","DOIUrl":"10.1016/j.joes.2025.08.001","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":48514,"journal":{"name":"Journal of Ocean Engineering and Science","volume":"10 6","pages":"Pages 1046-1060"},"PeriodicalIF":11.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145469116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Innovative comprehensive model and future strategies for the installation of wave power plants: A case study in the black sea, Turkey","authors":"Ozan AKDAĞ","doi":"10.1016/j.joes.2025.08.007","DOIUrl":"10.1016/j.joes.2025.08.007","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":48514,"journal":{"name":"Journal of Ocean Engineering and Science","volume":"10 6","pages":"Pages 1119-1138"},"PeriodicalIF":11.8,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145469105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}