Journal of Advanced Marine Engineering and Technology最新文献_第8页

Networking strategy for data-driven management in a ship: Requirements and applications 船舶中数据驱动管理的网络策略:需求和应用程序

Journal of Advanced Marine Engineering and Technology Pub Date : 2022-08-31 DOI: 10.5916/jamet.2022.46.4.193

Yang-Ick Joo

{"title":"Networking strategy for data-driven management in a ship: Requirements and applications","authors":"Yang-Ick Joo","doi":"10.5916/jamet.2022.46.4.193","DOIUrl":"https://doi.org/10.5916/jamet.2022.46.4.193","url":null,"abstract":": Data-driven management in ships to improve efficiency and safety increasingly requires a networking solution that should satisfy the requirements of a ship. The mandatory regulations in the International Maritime Organization (IMO) requirements require recording voyage data to assist in accident investigations. However, most intra-communication devices in a ship are built based on wired communication, such as Ethernet, which causes problems with initial installation cost and scalability. Internet of Things (IoT) technology interconnects many sensor nodes to collect data and allows them to be used intelligently. Considering wireless sensor networks for IoT in a ship, techniques to reduce the energy consumption of distributed devices and extend communication coverage are significant issues to collect various data in a ship and ensure the accuracy of the collected data. The long-range wide area network (LoRaWAN) protocol for IoT was introduced as a promising solution for IoT because it is a data link layer with a long range, low power, and suitable bit rate for IoT applications. This paper discusses the suitability of the LoRaWAN protocol as a potential networking strategy for ships and proposes its use cases for data-driven vessel management.","PeriodicalId":217894,"journal":{"name":"Journal of Advanced Marine Engineering and Technology","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115147324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Diesel engine generator configuration and operation strategy for the integrated fully electric propulsion destroyer based on the actual operation profile 综合全电力推进型驱逐舰基于实际工况的柴油机发电机配置及运行策略

Journal of Advanced Marine Engineering and Technology Pub Date : 2022-08-31 DOI: 10.5916/jamet.2022.46.4.155

Hyun-Min Baek, So Yeon Kim, Hyung-Min Lee

{"title":"Diesel engine generator configuration and operation strategy for the integrated fully electric propulsion destroyer based on the actual operation profile","authors":"Hyun-Min Baek, So Yeon Kim, Hyung-Min Lee","doi":"10.5916/jamet.2022.46.4.155","DOIUrl":"https://doi.org/10.5916/jamet.2022.46.4.155","url":null,"abstract":": Abstract: Looking at the case of the UK navy, which adopted integrated fully electric propulsion (IFEP) as a vessel's propulsion system prior to the Republic of Korea (ROK) navy, various problems were derived from the aspects of the IFEP generator selection and operation. Moreover, recently, the UK navy has decided to increase the number of diesel engine generators from two to three. Based on this, the ROK navy is also considering the number of diesel engine generators for the next destroyer. In this research, when the propulsion system of destroyers currently operated by the ROK navy was configured based on IFEP, the changes in the fuel consumption owing to the number of diesel engine generators and operation strategies were calculated, and the effect on economic efficiency was obtained. We also examined whether the created economic efficiency could offset the space and weight required for an additional diesel engine generator. In this process, instead of the simple operation profile of the vessel presented in the initial required process of the vessel, the actual operation profiles for a year of three target destroyers were investigated and applied to the research to complement reality. As a result of the calculation, it was confirmed that, under the specified conditions examined, installing three diesel engine generators would produce an excellent economic effect. The effect remains even if the space and weight requirements owing to the increased number of diesel engine generators are offset. From the viewpoint of the operation strategies of the diesel engine generators, it is necessary for the diesel engine generators to take charge of the low load power range of the vessel and to have a rest period in the medium - high load power range.","PeriodicalId":217894,"journal":{"name":"Journal of Advanced Marine Engineering and Technology","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128534972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Review of the optimal locations of coastal sea area for operating wave energy converter in Korea 韩国沿海海域波浪能转换器最佳运行位置综述

Journal of Advanced Marine Engineering and Technology Pub Date : 2022-08-31 DOI: 10.5916/jamet.2022.46.4.172

G. Kim, S. An, JongHyun Lee

引用次数: 0

Energy-efficient simultaneous wireless information and power transfer-enabled orthogonal multiple access under distributed antenna systems 分布式天线系统下节能的同时无线信息和功率传输正交多址

Journal of Advanced Marine Engineering and Technology Pub Date : 2022-08-31 DOI: 10.5916/jamet.2022.46.4.196

Dongjae Kim, Dong-Wook Seo

引用次数: 1

A study on the effects of self-piercing riveting methods on the joint 自穿孔铆接方法对接头影响的研究

Journal of Advanced Marine Engineering and Technology Pub Date : 2022-08-31 DOI: 10.5916/jamet.2022.46.4.164

Hyeong-woo Park

{"title":"A study on the effects of self-piercing riveting methods on the joint","authors":"Hyeong-woo Park","doi":"10.5916/jamet.2022.46.4.164","DOIUrl":"https://doi.org/10.5916/jamet.2022.46.4.164","url":null,"abstract":": As the regulations on exhaust gas strengthened, the research and development of devices to reduce air pollutants emitted from vehicles have continued. Lightweight design that influences the fuel efficiency of vehicles has become an essential consideration due to the use of exhaust gas reduction systems. The early lightweight design started as a concept of replacing steel materials with aluminum or ultrahigh tensile steel. However, bi-metals with high strength and light weight are now being designed and developed instead of single materials. For bonding of bi-metal sheets, the self-piercing riveting method is being generally applied to double sheets with an upper high-tensile steel plate and a lower aluminum alloy plate. However, there is insufficient research to solve the problem of the costs of power consumption and consumable parts and low bonding strength of the joint due to the potential corrosion of parts that occur in the rivet joint. This study proposed a new self-piercing riveting method after punching (SPRP) method that can prevent the reduction of bonding force of the rivet joint and minimize the stress and forming load required for bonding. Furthermore, the possibility of rivet bonding with corrosion resistance and bonding force was proved through experiment and analysis.","PeriodicalId":217894,"journal":{"name":"Journal of Advanced Marine Engineering and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129173527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flow behavior and performance analysis of Annular Centrifugal Contactor for liquid–liquid separation: A numerical study 液液分离用环形离心接触器流动特性与性能分析:数值研究

Journal of Advanced Marine Engineering and Technology Pub Date : 2022-08-31 DOI: 10.5916/jamet.2022.46.4.182

Palash Chakma, Zhao Hongwu, Junho Jeon, Yeonwon Lee

{"title":"Flow behavior and performance analysis of Annular Centrifugal Contactor for liquid–liquid separation: A numerical study","authors":"Palash Chakma, Zhao Hongwu, Junho Jeon, Yeonwon Lee","doi":"10.5916/jamet.2022.46.4.182","DOIUrl":"https://doi.org/10.5916/jamet.2022.46.4.182","url":null,"abstract":"Liquid–liquid separation is a process of separating two liquids based on their relative solubility; however, separating two liquids with a slight density difference is difficult because of interfacial forces. A newly designed annular centrifugal contactor (ACC) with a funnel–type weir zone was investigated numerically to analyze the flow fields and separation performance of two liquids with slight density differences, such as palm oil and water. Ansys CFX was used to simulate unsteady, turbulent, multiphase flows in the ACC. The simulation was performed using the Eulerian–Eulerian method, in which a homogeneous k–ɛ turbulence model with a scalable wall function is used. The sliding mesh method was adopted to solve the rotational effect of the stator rotor. A detailed parametric analysis of mixing and separation based on the liquid density difference, angular velocity, and inlet velocity of the mixture variations was performed. The oil quality and separation efficiency were calculated at the oil outlet to analyze the performance of the ACC rotor. The results show that oil quality increases with increasing angular and inlet velocities but decreases with an increasing liquid density difference. Moreover, the oil separation efficiency decreases with increasing angular and inlet velocities but increases with an increasing liquid density difference. Maximum oil quality and separation efficiencies of approximately 99% and 79%, respectively, were obtained at the oil outlet. Finally, it can be concluded that the two liquids with a slight density difference can be adequately separated using the newly designed ACC.","PeriodicalId":217894,"journal":{"name":"Journal of Advanced Marine Engineering and Technology","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133493298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Development of a unified formula for evaluating the safe working loads of ship block support structures 建立了船舶块体支撑结构安全工作载荷的统一计算公式

Journal of Advanced Marine Engineering and Technology Pub Date : 2022-06-30 DOI: 10.5916/jamet.2022.46.3.107

J. Park, J. Seo

引用次数: 1

Numerical study of quasi-static crushing behaviors of steel tubular structures according to the slenderness ratio 基于长细比的钢管结构准静态破碎行为数值研究

Journal of Advanced Marine Engineering and Technology Pub Date : 2022-06-30 DOI: 10.5916/jamet.2022.46.3.101

Youngin Park, Jin-Seong Cho, Jeong-Hwan Kim

引用次数: 0

Remaining life prediction algorithms of electric motors for exhaust gas recirculation blower systems 废气再循环鼓风机系统电机剩余寿命预测算法

Journal of Advanced Marine Engineering and Technology Pub Date : 2022-06-30 DOI: 10.5916/jamet.2022.46.3.135

Sung-An Kim

引用次数: 1

Magnetic induction communication using toroidal helix coil 磁感应通信采用环形螺旋线圈

Journal of Advanced Marine Engineering and Technology Pub Date : 2022-06-30 DOI: 10.5916/jamet.2022.46.3.122

K. Sohn, Hyun-Sik Kim

引用次数: 0