International Journal of Naval Architecture and Ocean Engineering最新文献

Numerical and experimental investigation of an Inertial Tilting hybrid wave energy converter for powering small-scale marine systems 小型海洋系统惯性倾斜混合波能转换器的数值与实验研究

IF 2.3 3区工程技术

International Journal of Naval Architecture and Ocean Engineering Pub Date : 2025-01-01 DOI: 10.1016/j.ijnaoe.2025.100658

Chongfei Sun , Huaiyu Teng , Xiaoyan Ma , Hailong Chen , Liming Sun , Cun Shao , Fei Cao , Hengxu Liu

{"title":"Numerical and experimental investigation of an Inertial Tilting hybrid wave energy converter for powering small-scale marine systems","authors":"Chongfei Sun , Huaiyu Teng , Xiaoyan Ma , Hailong Chen , Liming Sun , Cun Shao , Fei Cao , Hengxu Liu","doi":"10.1016/j.ijnaoe.2025.100658","DOIUrl":"10.1016/j.ijnaoe.2025.100658","url":null,"abstract":"<div><div>The increasing global demand for marine resource exploration, maritime rights protection, and deep-sea engineering applications highlights the need for the diversification of marine engineering equipment and the expansion of its deep-sea capabilities, presenting significant technical and economic value. As the use of small-scale marine engineering equipment in deep-sea environments becomes more prevalent, optimizing energy supply methods for such equipment is critical to ensure their durability and efficiency in complex marine conditions. This paper proposes an Inertial Tilting Electromagnetic-Triboelectric Hybrid Energy Converter (ITHEC), which efficiently harvests energy from ocean waves to power small marine engineering devices. A comprehensive design and optimization framework was developed for this energy converter. This framework was based on theoretical analysis and simulations of structural dynamics and characteristics. Validation experiments were conducted using a custom-built structural characteristics testing platform. The results showed that under horizontal harmonic motion excitation with an amplitude of d = 60 mm and a frequency of <em>f</em> = 1.5Hz, the open-circuit voltages of the triboelectric nanogenerator (TENG) and electromagnetic generator (EMG) reached 60V and 0.23V, respectively, with short-circuit currents of 1.3 μA and 2.2 mA, and peak power densities of 1.18 mW/m<sup>2</sup> and 0.51 mW/m<sup>2</sup>. When arrayed, the hybrid energy converter can meet the operating current requirements of small marine sensors. This study offers an innovative solution for energy supply challenges in small marine equipment and establishes the practical viability of hybrid power systems for marine energy harvesting.</div></div>","PeriodicalId":14160,"journal":{"name":"International Journal of Naval Architecture and Ocean Engineering","volume":"17 ","pages":"Article 100658"},"PeriodicalIF":2.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143916875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 simulations and large-scale experimental research into air-lifting system for deep-sea mining 深海采矿气举系统数值模拟与大型试验研究

IF 2.3 3区工程技术

International Journal of Naval Architecture and Ocean Engineering Pub Date : 2025-01-01 DOI: 10.1016/j.ijnaoe.2025.100656

JianYu Xiao , Zhuang Kang , Jing Leng , Ming Chen , Jun Liu

引用次数: 0

Experiment and modeling of submarine emergency rising motion using free-running model 基于自由运行模型的潜艇应急上升运动实验与建模

IF 2.3 3区工程技术

International Journal of Naval Architecture and Ocean Engineering Pub Date : 2025-01-01 DOI: 10.1016/j.ijnaoe.2024.100641

Jooho Lee, Seonhong Kim, Jihwan Shin, Jaemoon Yoon, Jinheong Ahn, Minjae Kim

引用次数: 0

A comprehensive review of foundation designs for fixed offshore wind turbines 固定式海上风力发电机基础设计综述

IF 2.3 3区工程技术

International Journal of Naval Architecture and Ocean Engineering Pub Date : 2025-01-01 DOI: 10.1016/j.ijnaoe.2025.100643

Yun-jae Kim , Jin Seok Lim , Hae Jong Kim , Sung-Woong Choi

{"title":"A comprehensive review of foundation designs for fixed offshore wind turbines","authors":"Yun-jae Kim , Jin Seok Lim , Hae Jong Kim , Sung-Woong Choi","doi":"10.1016/j.ijnaoe.2025.100643","DOIUrl":"10.1016/j.ijnaoe.2025.100643","url":null,"abstract":"<div><div>In the present study, technical challenges and their corresponding solutions for each type of foundation—gravity-based, monopile, jacket, tripod, and suction bucket—used in wind turbines were addressed with consideration to different water depths. Along with presenting challenges and their solutions for each foundation, the present study proposed optimizing solutions and methods for addressing these challenges, including numerical approaches and empirical methods derived from field testing. These include enhancing structural stability, improving installation efficiency, and utilizing advanced structural analysis techniques to predict and mitigate environmental impacts. Finally, research cases demonstrating improvements in foundations through shape modifications are summarized. This paper focuses on addressing and proposing an optimal design approach to achieve cost reduction, improved stiffness, and weight minimization. Notably, hybrid foundations incorporating friction wheels achieved a 300% increase in ultimate bearing capacity, while optimization techniques accounting for environmental loads resulted in approximately a 38.24% reduction in foundation weight.</div></div>","PeriodicalId":14160,"journal":{"name":"International Journal of Naval Architecture and Ocean Engineering","volume":"17 ","pages":"Article 100643"},"PeriodicalIF":2.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Statistical study of cascade hydrodynamics and cavitation dynamics in propulsion pumps 推进泵叶栅水动力与空化动力学的统计研究

IF 2.3 3区工程技术

International Journal of Naval Architecture and Ocean Engineering Pub Date : 2025-01-01 DOI: 10.1016/j.ijnaoe.2025.100665

Guoshou Zhao , Heng Liu , Rui Wu , Ning Liang , Linlin Cao

{"title":"Statistical study of cascade hydrodynamics and cavitation dynamics in propulsion pumps","authors":"Guoshou Zhao , Heng Liu , Rui Wu , Ning Liang , Linlin Cao","doi":"10.1016/j.ijnaoe.2025.100665","DOIUrl":"10.1016/j.ijnaoe.2025.100665","url":null,"abstract":"<div><div>The propulsion pump is widely employed in ocean engineering to generate thrust for surface or underwater vehicles. The cascade provides a simplified way to investigate the flow dynamics inside a propulsion pump considering specific parameters such as solidity and blade stagger. This work develops the foil generation method by in-house code through parametrically controlling the maximum and its position of camber and thickness, the influence of which on the performance obtained by numerical simulation is studied by the multiple statistical regression covering linear and interaction terms. For isolated hydrofoils, the interaction of maximum thickness and its position plays a major role in determining the performance. For cascade configurations with variable foils, besides the thickness interaction terms, other terms influencing lift and drag are not unified for different angles of attack. The solidity insignificantly affects the regression terms. For the cascade with the fixed foils, the solidity, axial velocity, and incidence angle all have an impact on the cascade foil's performance. The statistical loading distributions show that the isolated foil is a typical head-loading type, and the cascade foil is a body-loading type. The cascade cavitation dynamics indicate that a higher solidity and incidence angle would depress the cavitation development owing to the adjacent foil interference. This research aims to provide an instructive guide on pump blade design.</div></div>","PeriodicalId":14160,"journal":{"name":"International Journal of Naval Architecture and Ocean Engineering","volume":"17 ","pages":"Article 100665"},"PeriodicalIF":2.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144241298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 neural network fault-tolerant sliding mode control for ship berthing with actuator faults and input saturation 具有执行器故障和输入饱和的船舶靠泊自适应神经网络容错滑模控制

IF 2.3 3区工程技术

International Journal of Naval Architecture and Ocean Engineering Pub Date : 2025-01-01 DOI: 10.1016/j.ijnaoe.2025.100644

Son Tung Vu , Thai Duong Nguyen , Hai Van Dang , Van Suong Nguyen

引用次数: 0

Horizontal plane course-stability and manoeuvres of a twin-screw surface combatant depending on appendage dimensions 依赖附件尺寸的双螺旋水面战斗舰的水平面航向稳定性和机动

IF 2.3 3区工程技术

International Journal of Naval Architecture and Ocean Engineering Pub Date : 2025-01-01 DOI: 10.1016/j.ijnaoe.2025.100655

Dong-Jin Kim, Haeseong Ahn, Dong Jin Yeo

{"title":"Horizontal plane course-stability and manoeuvres of a twin-screw surface combatant depending on appendage dimensions","authors":"Dong-Jin Kim, Haeseong Ahn, Dong Jin Yeo","doi":"10.1016/j.ijnaoe.2025.100655","DOIUrl":"10.1016/j.ijnaoe.2025.100655","url":null,"abstract":"<div><div>In this study, powering and manoeuvring performance of a twin-screw surface combatant, ONR tumblehome (ONRT), are estimated through towing tank captive model tests, and influences of appendage dimensions on its course-stabilities and manoeuvres are investigated by system-based simulation techniques. At first, resistance and propulsion tests are carried out at Froude numbers up to 0.4 in the towing tank of Korea Research Institute of Ships and Ocean Engineering (KRISO) so that its full-scale powering performance can be considered in the present simulation model. In particular, the residuary resistance is significantly affected by patterns of hull generated waves. Secondly, horizontal planar motion mechanism (HPMM) tests are performed to derive hydrodynamic coefficients in surge, sway, and yaw directions. By using 3-DoF modular-type models, turn and zig-zag manoeuvres are simulated, and simulations are validated with existing benchmark free-run model tests. Sway-yaw coupled linear whole ship models are also established in order to assess a straight-line stability of a rudder-fixed ONRT whole ship. Linear hydrodynamic coefficients are decomposed into hull and appendage components so that influences of appendage dimensions on ship manoeuvres can be analyzed in more detail. When the rudder area is enlarged or reduced, the coefficient and the location of a centerline skeg are redesigned under the constraint straight-line stabilities are identical. For one original ONRT and two modified ships, turn and zig-zag manoeuvres are simulated by linear whole ship models. Even though straight-line stabilities are identical, the turning diameter is decreased while zig-zag overshoot angles are increased with increasing rudder area. To ensure sufficient manoeuvrabilities of such a twin-screw ship, careful attentions should be paid to design of a centerline skeg and rudders.</div></div>","PeriodicalId":14160,"journal":{"name":"International Journal of Naval Architecture and Ocean Engineering","volume":"17 ","pages":"Article 100655"},"PeriodicalIF":2.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of notch shape on the fracture toughness behavior 缺口形状对断裂韧性行为的影响

IF 2.3 3区工程技术

International Journal of Naval Architecture and Ocean Engineering Pub Date : 2025-01-01 DOI: 10.1016/j.ijnaoe.2025.100646

Jiseung Lee , Wonjun Jo , Junseok Seo , Gyubaek An

{"title":"Effect of notch shape on the fracture toughness behavior","authors":"Jiseung Lee , Wonjun Jo , Junseok Seo , Gyubaek An","doi":"10.1016/j.ijnaoe.2025.100646","DOIUrl":"10.1016/j.ijnaoe.2025.100646","url":null,"abstract":"<div><div>This study evaluates the effect of notch shape on the fracture toughness of a 500 MPa base material designed for liquefied carbon dioxide storage tanks. This study specifically focuses on assessing the crack tip opening displacement (CTOD) values for different notch shapes, including fatigue pre-cracks (R = 0.025 mm) and electrical discharge machining (EDM) notches (R = 0.07 mm and R = 0.15 mm). CTOD tests were conducted over a temperature range of −55 °C to −140 °C. The results revealed that as the notch radius increased, the degree of stress concentration decreased, leading to an increase in fracture toughness. In temperature-dependent tests, CTOD values consistently decreased as the temperature decreased, with EDM notches exhibiting a lower rate of fracture toughness reduction compared to fatigue pre-cracks, which is attributed to differences in the degree of stress concentration. Scanning electron microscopy analysis of the fracture surfaces revealed the reason for significant differences in CTOD values and fracture behaviors between fatigue pre-crack and EDM notches, particularly at −140 °C, a temperature below the ductile to brittle transition temperature. This study suggests that EDM notches, especially with radii of 0.07 mm and 0.15 mm, can effectively replace fatigue pre-cracks in CTOD evaluations, particularly at temperatures above the transition temperature, offering a more efficient method for assessing fracture toughness in cryogenic environments.</div></div>","PeriodicalId":14160,"journal":{"name":"International Journal of Naval Architecture and Ocean Engineering","volume":"17 ","pages":"Article 100646"},"PeriodicalIF":2.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143348296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A conceptual study of 15,000 TEU SMR-powered containerships 15000 TEU smr动力集装箱船的概念研究

IF 2.3 3区工程技术

International Journal of Naval Architecture and Ocean Engineering Pub Date : 2025-01-01 DOI: 10.1016/j.ijnaoe.2025.100662

Kyeongho Kim, ChangSeop Kwon, Sanghwan Kim

引用次数: 0

A Kolmogorov-Arnold network-based method for predicting underwater explosion shock spectrum considering cabin structural characteristics 基于Kolmogorov-Arnold网络的水下爆炸冲击谱预测方法

IF 2.3 3区工程技术

International Journal of Naval Architecture and Ocean Engineering Pub Date : 2025-01-01 DOI: 10.1016/j.ijnaoe.2025.100671

Xiaodi Liang, Yindong Liu, Siqi Wang

{"title":"A Kolmogorov-Arnold network-based method for predicting underwater explosion shock spectrum considering cabin structural characteristics","authors":"Xiaodi Liang, Yindong Liu, Siqi Wang","doi":"10.1016/j.ijnaoe.2025.100671","DOIUrl":"10.1016/j.ijnaoe.2025.100671","url":null,"abstract":"<div><div>This study introduces an innovative approach for the rapid prediction of shock spectrum in ship structures subjected to underwater far-field explosion loads. A nine-compartment ship model is developed, with 31 test condition sets designed. For each set, sample measurement points are strategically placed at typical locations across various deck levels and on the inner and outer bottoms of the double bottom at different frame cross-sections. Shock spectrum (including spectral velocity, acceleration, and displacement) are extracted from these sample points to establish a comprehensive shock spectrum database. Using the Kolmogorov-Arnold Network, a rapid prediction model for ship structure shock spectrum is developed. The network's inputs include ship structural formal parameters (e.g., number and position of decks, transverse and longitudinal bulkheads), impact factors, feature transfer distances, and local shock factors. Spectral velocity, acceleration, and displacement are used as the network's outputs during training. A comparative analysis of prediction accuracy among the Kolmogorov-Arnold Network, Backpropagation Network, and Convolutional Neural Network is conducted. The results demonstrate that the Kolmogorov-Arnold Network exhibits superior predictive accuracy compared to the Backpropagation and Convolutional Neural Networks. In contrast to existing finite element simulation methods, the proposed approach is simpler and more practical. Furthermore, unlike current rapid prediction methods, the proposed method takes into account the influence of ship structural characteristics on underwater explosion shock responses, making it better suited to the requirements for rapid prediction of underwater far-field explosion shock spectrum in ship structures.</div></div>","PeriodicalId":14160,"journal":{"name":"International Journal of Naval Architecture and Ocean Engineering","volume":"17 ","pages":"Article 100671"},"PeriodicalIF":2.3,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144685569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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